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REFERENCES

Abgarowicz, F., Swietlikowska, U. & Truszynski, A. 1963 The value of corn silage with addition of nonprotein nitrogen; urea, ammonium sulfate, ammonia solution. Roczn. Naukroln, 81-B: 695–706. (English summary)

Abgarowicz, F. et al. 1962 [Maize ensiled with urea for fattening growing cattle.] Przegl. hodow., 30: 11. (In Polish)

Adams, E.G. et al. 1955 Desiccated sewage sludge as a partial nitrogen replacement in steer rations. J. Anim. Sci., 14: 1191.

Albert, W.W. et al. 1955 Modified urea supplements with corn silage for wintering ewe lambs. J. Anim. Sci., 14: 143–152.

Albert, W.W. et al. 1956 The sulfur requirement of growing-fattening lambs in terms of methionine, sodium sulfate and elemental sulfur. J. Anim. Sci., 15: 559–569.

Altona, R.E. & Mackenzie, H.I. 1964 Observations on cyanuric acid as a source of non-protein nitrogen for sheep. J.S. Afr. vet. med. Ass., 35: 203–205.

Altona, R.E., Rose, C.J. & Tilley, T.J. 1960 Urea as supplementary protein for bulk feeds. S. Afr. J. agric. Sci., 3: 69–81.

Amschler, J.W. & Pmmer, H. 1956 Ersatz des Eiwesses durch Harnstoff bei alpiner Spätweide. Bodenkultur, 8: 50–53.

Andersen, Preben. Personal communication.

Anderson, G.C. et al. 1959 Comparative effects of urea, uramite, biuret, soyabean protein, and creatine on digestion and nitrogen metabolism in lambs. J. Anim. Sci., 18: 134–140.

Annison, E.F. & Lewis, D. 1959 Metabolism in the rumen. London, Methuen. 184 p.

Anonymous. 1960–61 Molasses and urea with LGR cattle. Brisbane, Queensland Department of Agriculture and Stock. Annual report, p. 37–38.

Anonymous. 1961–62 Feed-lot studies. Brisbane, Queensland Department of Agriculture and Stock. Annual report, p. 37–38.

Anonymous. 1961 Brisbane, Queensland Department of Agriculture and Stock. Animal Husbandry Leaflet 330.

Archibald, J.G. 1943 Feeding urea to dairy cows. Amherst, Massachusetts Agricultural Experiment Station. Bulletin 406.

Baia, G., Ariesanu, I. & Iliescu, V. 1962 [Results of experiments on the utilization of ammonia solution in rations for dairy cows and growing cattle.] Institutul Central de Cercetari Agricole. Masuri pentru Cresterea Continutului de Proteina in Nutreturi. Bucuresti, Ed. Agro-Silvica, p. 125–132. (In Romanian)

Baker, M.L. 1944 The substitution of distillers' wheat, dried grains or urea for soybean oil meal for wintering heifer calves. Lincoin, Nebraska Agricultural Experment Station. Fifty-eighth annual report. 69 p.

Baker, M.L., Arthaud, V.H. & Gregory, K.E. 1949 Feeding urea to growing and fattening calves. Lincoin, Nebraska Agricultural Experiment Station. Sixty-second annual report. 75 p.

Balch, C.C. & Campling, R.C. 1961 Utilization of urea by milking cows. J. Dairy Res., 28: 157–162.

Barnett, A.J.G. & Reid, R.L. 1961 Reactions in the rumen. London, Arnold. 252 p.

Barrentine, B.F. & Darnell, J.A. 1954 Ammoniated molasses not satisfactory as a protein supplement for beef calves. State College, Mississippi Agricultural Experiment Station. Information Sheet 498.

Barrie, N. & Clark, R. 1959 The effects of (a) soluble phosphate and (b) cobalt on the utilization of urea nitrogen by cattle. J.S. Afr. vet. med. Ass., 30: 457–458.

Bartlett, S. & Blaxter, K.L. 1947 The value of urea as a substitute for protein in the rations of dairy cattle. 1. Field trials with dairy cows. J. agric. Sci., 37: 32–44.

Bartlett, S. & Broster, W.H. 1958 Feeding trials with ammoniated molases in the diet of young dairy cattle. J. agric Sci., 50: 60–63.

Bartlett, S. & Cotton, A. G. 1938 Urea as a protein substitute in the diet of young cattle. J. Dairy Res., 9: 263–272.

Bates, J.P. Jr. et al. 1958 Comparison of feeding corn cobs and a liquid urea-molasses-mineral mix with and without ethyl alcohol to yearling dairy heifers. J. Dairy Sci., 41: 723.

Beames, R.M. 1959 Molasses and urea as a supplement to low-quality pasture hay for cattle. Qld J. agric. sci., 16: 223–232.

Beames, R.M. 1960a A note on the preservation of a solution of molasses and urea in water. Qld J. agric. Sci., 17: 205–206.

Beames, R.M. 1960b The supplementation of low-quality hay and pasture with molasses and molasses-urea mixtures. Proc. Aust. Soc. Anim. Prod., 3: 86–92.

Beames, R.M. 1961 Bagomolasses as the basis of a fattening ration for cattle. Qld J. agric. Sci., 18: 425–436.

Beames, R.M. 1963 Provision of urea to cattle in salt-urea-molasses block. Qld J. agric. Sci., 20: 213–230.

Beeson, W.M. 1965 Formulating and feeding high urea supplements. Feedstuffs, 37: 28–29.

Beeson, W.M. & Perry, T.W. 1952 Balancing the nutritional deficiencies of roughages for beef steers. J. Anim. Sci., 11: 501–515.

Beeson, W.M., Mohler, M.T. & Perry, T.W. 1964 Supplement A (32%) vs. Purdue 64% supplement, and the effect of Co-Ral, selenium and tylosin on the performance of steers. Purdue 1964 Cattle Feeders' Day Report.

Belasco, I.J. 1954 New nitrogen feed compounds for ruminants; a laboratory evaluation. J. Anim. Sci., 13: 601–610.

Bell, M.C., Gallup, W.D. & Whitehair, C.K. 1951 Utilization by steers of urea nitrogen in rations containing different carbohydrate feeds. J. Anim. Sci., 10: 1037.

Bentley, O.G., Klosterman, E.W. & Engle, P. 1955 The use of urea to increase the crude protein content of corn silage for fattening steers. Wooster, Ohio Agricultural Experiment Station. Research Bulletin 766.

Bentley, O.G. et al. 1954 The effect of trace minerals on growth performance and vitamin B12 synthesis of steers. J. Anim. Sci., 13: 789–801.

Berry, W.T. Jr., Riggs, J.K. & Kunkel., H.O. 1956 The lack of toxicity of biuret to animals. J. Anim. Sci., 15: 225–233.

Bezuhlyi, I.I. 1940 Replacement of protein by mineral nitrogen in rations for dairy cows. Nautshnyie Trudy Kievskogo Veter. Institute, 2.

Bhattacharya, A.N. & Fontenot, J.P. 1965 Utilization of different levels of poultry litter nitrogen by sheep. J. Anim. Sci., 24: 1174–1178.

Bielinski, K. 1963 Studies on the nutritive value of ammoniated sugar beet pulp in fattening of cattle. Roczn. Naukroln., 82-B: 785–807. (English summary)

Bielinski, K. & Chomyszyn, M. 1962 [Ammoniated sugar beet pulp and urea for fattening heifers.] Przegl. hodow., 30: 13. (In Polish)

Bishop, E.J.B. 1957 Combat losses with urea and molasses. Fmg S. Afr., 33: 30–32.

Bishop, E.J.B. 1959 The value of urea and molasses proved at Dohne. Fmg S. Afr., 35: 27–29.

Bisschop, J.H.R. & Groenewald, J.W. 1963 Limitations to efficiency imposed by inadequate nutrition with particular reference to feed resources. Proc. Wld Conf. Anim. Prod., Rome, 1: 47–72.

Blackburn, T.H. 1965 Nitrogen metabolism in the rumen. In Physiology of digestion in the ruminant, ed by R.W. Dougherty et al. London, Butterworths, p. 322–334.

Bohman, V.R. et al. 1954 The utilization of molasses and urea in the rations of growing dairy cattle. J. Dairy Sci., 37: 284–293.

Bondarenko, G.A. & Slesarev, I.K. 1962 [The influence of ammonium acetate on the increase of fat content in milk.] Trudy Vsesoiuzn. Nauch-Issled. Inst. Zhivotn., 24: 57–77. (In Russian)

Bondarenko, G.A., Bielova, T.A. & Slesarev, I.K. 1959 [On the problem of milk fat formation in cows of Jersey and Holstein-Friesian breeds.] Trudy Vsesoiuzn. Nauch.-Issled. Inst. Zhivotn., 23: 34–71. (In Russian)

Bondarev, I.F. & Gurtykh, V.A. 1962 [Treatment of straw with ammonia solution.] Zhivotnovodstvo, 10: 33–35. (In Russian)

Bourne, B.A. 1956 Some experience with ammoniating large quantities of sugar cane pith for cattle feeding tests. Sugar J., 18(8): 24–25.

Bowstead, J.E. & Fredeen, H.T. 1948 Feeding urea to dairy cows with special reference to the palatability of feed mixtures containing urea. Sci. Agric., 28: 66–78.

Briggs, H.M. et al. 1947 Urea as an extender of protein when fed to cattle. J. Anim. Sci., 6: 445–460.

Briggs, H.M. et al. 1948 The efficiency of urea as a protein extender. Stillwater, Oklahoma Agricultural Experiment Station. Miscellaneous Publication 13: 19–23.

Briggs, P.K. et al. 1960 Urea as a nitrogen supplement in the utilization of low-quality roughage by Merino sheep. Proc. 8th int. Grass. Congr., p. 579–583.

Broster, W.H. et al. 1960 The value of ammoniated sugar beet pulp for dairy cows. J. agric. Sci., 55: 197–202.

Brown, L.D. et al. 1956 The utilization of urea nitrogen by young dairy calves. J. Anim. Sci., 15: 1125–1132.

Brown, L.D. et al. 1958 Utilization of urea by young dairy calves as affected by aureomycin. J. Dairy Sci., 41: 743.

Brown, L.D. et al. 1960 Effect of level and source of sulfur on the utilization of urea by heifers. J. Dairy Sci., 43: 890.

Brueggemann, J., Drepper, K. & Zucker, H. 1962 Urea feeding trials with young bulls. Zeit. Tierphysiol. Tierernähr. Futtermittelk., 17: 243–257.

Brugman, H.H. et al. 1964 Nutritive value of poultry litter. J. Anim. Sci., 23: 869.

Bullington, T.H., Byrd, C.E. & Harries, T.W. 1955 Urea poisoning in the bovine. N. Amer. Vet., 36: 107–109.

Burroughs, W. 1965 Completion of new cattle concentrate (lowa 80 premix) experiment with emphasis upon the comparative merits of corn silage vs. corn grain finishing rations. Iowa Animal Science Leaflet R 69.

Burroughs, W., Gerlaugh, P. & Bethke, R.M. 1950 The influence of alfalfa hay and fractions of alfalfa hay upon the digestion of ground corn cobs. J. Anim. Sci., 9: 207–213.

Burroughs, W. et al. 1951 In vitro observations upon the nature of protein influences upon urea utilization by rumen micro-organisms. J. Anim. Sci., 10: 672–682.

Burnzynski, B. 1963 [Dried ammoniated sugar beet pulp in the feeding of dairy cows.] Roczn. Naukroln., 81-B: 573–589. (In Polish)

Buziassy, C. & Tribe, D.E. 1960b The synthesis of vitamins in the rumen of sheep. II. Levels of thiamine, riboflavin and nicotinic acid in the rumen of grazing lambs. Aust. J. agric. Res., 11: 1002–1008.

Campbell, T.C. et al. 1963 Utilization of biuret by ruminants. J. Anim. Sci., 22: 139–145.

Campling, R.C., Freer, M. & Balch, C.C. 1962 Factors affecting the voluntary intake of feed by cows. 3. The effect of urea on the voluntary intake of oat straw. Brit. J. Nutr., 16: 115–124.

Centrale Laboratorium Przemyslu Rolnego pgr. 1962 Ammoniating of potato-malt distillers' slop. (Typescript)

Chalupa, W., Evans, J.L. & Stillions, M.C. 1964 Influence of ethanol on rumen fermentation and nitrogen metabolism. J. Anim. Sci., 23: 802–807.

Chomyszyn, M. & Bielinski, K. 1959 [Different levels of ammonia in the rations for wethers.] Roczn. Naukroln., 74-B: 527–536. (In Polish)

Chomyszyn, M., Ziolecka, A. & Bielinski, K. 1959 [Ammoniated sugar beet pulp in the feeding of wethers.] Roczn. Naukroln., 74-B: 509–526. (In Polish)

Chomyszyn, M., Bielinski, K. & Kielisz, L. 1959 [Ammoniated feeds for fattening-growing wethers.] Roczn. Naukroln., 74-B: 557–566. (In Polish)

Chomyszyn, M., Bielinski, K. & Slabon, W. 1960 [Ammoniated straw in rations of growing-fattening wethers.] Roczn. Naukroln., 75-B: 531–540. (In Polish)

Chomyszyn, M., Bielinski, K. & Slabon, W. 1962 [Dried ammoniated beet pulp and urea in rations for dairy cows.] Roczn. Naukroln., 79-B: 17–41. (In Polish)

Chomyszyn, M. et al. 1960 [Sugar beet pulp ammoniated with gaseous ammonia in rations for lambs.] Roczn. Naukroln., 75-B: 513–530. (In Polish)

Chomyszyn, M. et al. 1963 [Digestibility and nutritive value of ammoniated sugar beet pulp.] Roczn. Naukroln., 83-B: 105–114. (In Polish)

Chomyszyn, M. et al. 1964a [Ammonium lactate as a source of nitrogen for sheep.] Roczn. Naukroln., 84-B: 63–74. (In Polish)

Chomyszyn, M. et al. 1964b [Ammoniated straw in rations for sheep.] Roczn. Naukroln., 84-B: 75–81. (In Polish)

Clark, R. 1952 Use of urea and molasses in winter feeding. Fmg S. Afr., 27: 453–454.

Clark, R. & Quin, J.I. 1951 Studies on the alimentary tract of the Merino sheep in South Africa. XXII. Effect of supplementing poor-quality grass hay with molasses and nitrogenous salts. Onderstepoort J. vet. Res., 25: 93–103.

Clark, R. & Barrie, N. 1954 Winter feeding experiments. Fmg S. Afr., 29: 135–138.

Clark, R., Barrett, E.L. & Kellerman, J.H. 1963 A comparison between nitrogen retention from biuret and urea by sheep on a low - protein roughage diet. J. S. Afr. vet. med. Ass., 34: 419–423.

Clark, R., Oyaert, W. & Quin, J.I. 1951 Studies on the alimentary tract of the Merino sheep in South Africa. XXI. The toxicity of urea to sheep under different conditions. Onderstepoort J. vet. Res., 25: 73–78.

Colovos, N.F. et al. 1963 Nutritive value of the dairy cattle ration as affected by different levels of urea and quality of ingredients. J. Dairy Sci., 46: 696–702.

Connell, W.E. 1944 et al. Ammoniated beet pulp and urea tested as protein sources for fattening cattle. Colorado Fm Bull., 5: 9–12.

Conrad, H.R. & Hibbs, J.W. 1961 Urea treatment affects utilization of corn silage. Ohio Fm Home Res., 46: 13–14.

Conrad, H.R. & Hibbs, J. W. 1966 Dehydrated alfalfa (Dehy-100) extends use of urea in rations for dairy cows. Wooster, Ohio Agricultural Research and Development Centre. Dairy Science Research Summary 14.

Coombe, J.B. 1959 The effect of supplementation with urea and molasses on the live weight, appetite and wool growth of sheep. J. Aust. Inst. agric. Sci., 25: 299–301.

Coombe, J.B. & Tribe, D.E. 1958 Toxicity of urea to sheep. Nature, London, 182: 116–117.

Coombe, J.B. & Tribe, D. E. 1960 The effect of urea on the utilization of low-quality roughage by the ruminant. Proc. Aust. Soc. Anim. Prod., 3: 83–85.

Coombe, J.B. & Tribe, D. E. 1962 The feeding of urea supplements to sheep and cattle: the results of penned feeding and grazing experiments. J. agric. Sci., 59: 125–141.

Coombe, J.B. & Tribe, D.E. 1963 The effects of urea supplements on the utilization of straw plus molasses diets by sheep. Aust. J. agric. Res., 14: 70–92.

Coombe, J.B., Tribe, D.E. & Morrison, J.W.C. 1960 Some experimental observations on the toxicity of urea to sheep. Aust. J. agric. Res., 11: 247–256.

Coppock, C.E. & Stone, J.B. 1965 Corn silage for dairy cattle. Proc. Cornell Nutr. Conf., p. 59–79.

Culbertson, C.C. et al. 1950 Protein substitutes with and without molasses for fattening yearling steers. Ames, Iowa Agricultural Extension Service. A.H. 176.

Cullison, A.E. 1944 The use of urea in making silage from sweet sorghum. J. Anim. Sci., 3: 59–62.

Davidov, R. & Gal'tsev, V. 1963 [Fluctuations in the composition of casein and in its content of milk.] Moloch. Prom., 24: 8–11. (In Russian)

Davidson, R.L. & Purchase, H.S. 1961 A preliminary comparison between two methods of urea supplementation of winter feed for beef cows. J.S. Afr. vet. med. Ass., 32: 85–89

Davis, G.K. & Roberts, H.F. 1959 Urea toxicity in cattle. Gainesville, Florida Agricultural Experiment Station. Bulletin 611.

Davis, G.K. Kirk, W.G. & Crowder, H.M. 1952 Ammoniated citrus pulp for cattle. J. Anim. Sci., 11: 760.

Davis, G.K. et al. 1944 Urea in sorghum silage. J. Dairy Sci., 27: 649.

Davis, G.K. et al. 1957 The nutritional availability of components of livestock feedstuffs. Gainesville, Florida Agricultural Experiment Station. Annual report, p. 63.

Davis, R.F., Williams, C. & Loosli, J.K. 1954 Studies on sulfur to nitrogen ratios in feeds for dairy cows. J. dairy Sci., 37: 813–818.

Davis, R.F. et al., 1955a Feeding value and digestibility of cane molasses nutrients for dairy heifers. Ithaca, New York, Cornell Agricultural Experiment Station. Bulletin 914. 27 p.

Davis, R.F. et al. 1955a Studies on the availability of nitrogen from various ammoniated products for rumen bacteria and dairy cattle. J. Dairy Sci., 38: 677–687.

Dinning, J.S., Briggs, H.M. & Gallup, W.D. 1949 The value of urea in protein supplements for cattle and sheep. J. Anim. Sci., 8: 24–34.

Dinning, J.S. et al. 1948 Effect of orally administered urea on the ammonia and urea concentration in the blood of cattle and sheep, with observations on blood ammonia levels associated with symptoms of alkalosis. Amer. J. Physiol. 153: 41–46.

Doetsch, R.N. & Robinson, R.Q. 1953 The bacteriology of the bovine rumen: a review. J. Dairy Sci., 36: 115–142.

Dowe, T.W. et al. 1950 Wheat bran and urea as supplements for fattening cattle. Lincoln, Nebraska Agricultural Experiment Station. Sixty-third annual report, p. 96.

Drori, D. & Loosli, J.K. 1959 Effect of ethyl alcohol and starch on digestibility of nutrients and on nitrogen retention at two levels of urea feeding. Agric. Fd Chem., 7: 50–53.

Emelianov, A.S. 1960 [Maize silage and urea in rations of dairy cows.] Zhivotnovodstvo, 22: 42–45. (In Russian)

Eng, K.S. Jr. 1964 The value of ammoniated rice hulls. Feedstuffs, 36, Feb. 1: 44–45.

Ewan, R.C., Hatfield E.E. & Garrigus, U.S. 1958 The effect of certain inoculations on the utilization of urea or biuret by growing lambs. J. Anim. Sci., 17: 298–303.

Faichney, G.J. 1965 The effect of sucrose on the utilization of straw plus urea diets by sheep. Aust. J. agric. Res., 16: 159–167.

Felinski, L. 1962 [Urea and ammonia solution in ration for ruminants.] Szczecinskie Towarzystwo Naukowe, 8: 3–52. (In Czechoslovakian)

Ferguson, W.S. & Neave, O. 1943 Nutritive value of ammoniated sugar beet pulp. J. agric. Sci. 33: 95–99.

Fleishman, L.E. 1963 [Preservation of the sugar beet pulp and its enrichment in nitrogenous compounds.] Sakh. Prom., 2: 14–19. (In Russian)

Fontenot, J.P. et al. 1963 The value of poultry litter as feedstuffs for fattening beef steers. blacksburg Virginia Agricultural Experiment Station. Livestock Research Program Report, p.9.

Franklin, M.C., Briggs, P.K. & McClymont, G.L. 1955 The utilization of low-quality pasture. J. Aust. Inst. agric Sci., 21: 216–228.

Freer, M., Campling, R.C. & Balch, C.C. 1962 Factors affecting the voluntary intake of food by cows. 4. The behaviour and recticular motility of cows receiving diets of hay, oat straw and oat straw with urea. Brit. J. Nutr., 16: 279–295.

Fremel, V.B., Losiakova, L.S. & Shishkova, E.A. [Enrichment of the distillers' slop with ammonium lactate.] Spirtnai Promysh., 8: 25–28. (In Russian)

French, M.H. 1957 The apparent digestibility of crude protein in the ruminant. III. The application of the general equation to rations containing urea. J. agric. Sci., 48: 384–386.

Gallup, W.D., Pope, L.S. & Whitehair, C.K. 1952 Value of added methionine in low-protein and urea rations for lambs. J. Anim. Sci., 11: 572–577.

Gallup, W.D., Pope, L.S. & Whitehair, K.C. 1953 Urea in rations for cattle and sheep. Stillwater, Oklahoma Agricultural Experiment Station. Bulletin B-409.

Glasscock, R.S. et al. 1950 Urea as a protein substitute for steers fed citrus molasses. J. Anim. Sci., 9: 657.

Goode, L., Barrick, E.R. & Tugman, D.F. 1955 Wintering beef cattle on urea treated corn silage. Proc. Ass. Southern agric. Workers,, 52: 64–66.

Goss, H. 1942–43 Some peculiarities of ruminant nutrition. Nutr. Abstr. Rev., 12: 531–538.

Gossett, W.H. et al. 1962 Value of supplemental lysine, methionine, methionine analog, and trace minerals on high urea fattening rations for beef steers. J. Anim. Sci., 21: 248–251.

Gray, R.S. & Clark, R. 1964 The excretion of biuret in the urine of sheep fed biuret. Onderstepoort J. vet. Res., 31: 91–96.

Grebiennik, A.Z. & Smirnova, V.I. 1958 [Feeding concentrates with urea supplement to the Romanovskaia sheep.] Trudy Vsesoiuzn. Nauch.-Issled. Inst. Zhivotn., 22: 94–99. (In Russian).

Greef, W.L., van der Merwe, F.J. & Swart, J.C. 1963 Urea in undiluted molasses as a supplement to grain straw. Proc. S. Afr. Soc. Anim. Prod., 2: 47–49.

Groves, N. et al. 1954 Comparative value of soyabean meal, urea, and trace minerals for fattening steers. Laramie, Wyoming Agricultural Experiment Station. Mimeograph Circular 49.

Hackler, L.R., Neumann, A.L. & Johnson, B.C. 1957 Feed from sewage. III. Dried activated sewage sludge as a nitrogen source for sheep. J. Anim. Sci., 16: 125–129.

Hale, W.H. & King, R.P. 1955 Possible mechanism of urea toxicity in cattle and sheep. Proc. Soc. exp. Biol. Med., 89: 112–114.

Hamilton, T.S., Robinson, W.B. & Johnson, B.C. 1948 Further comparisons of the utilization of nitrogen of urea with that of some feed proteins by sheep. J. Anim. Sci., 7: 26–34.

Hanson, L.E. & Ferrin, E.F. 1955 The value of urea in a low-protein ration for weanling pigs. J. Anim. Sci., 14: 43–48.

Harris, L.E. & Mitchell, H.H. 1941 The value of urea in the synthesis of protein in the paunch of the ruminant. 1. In maintenance. J. Nutr., 22: 167–182; 2. In growth. J. Nutr., 22: 183–196.

Harris, L.E., Work, S.H. & Henke, L.A. 1943 The utilization of urea and soybean oil meal nitrogen by steers. J. Anim. Sci., 2: 328–335.

Hart, E.B. et al. 1939 The utilization of simple nitrogenous compounds such as urea and ammonium bicarbonate by growing calves. J. Dairy Sci., 22: 785–798.

Hastings, W.H. 1944 The use of urea in commercial dairy feeds. J. Dairy Sci., 27: 1015–1021.

Hays, V.W. et al. 1957 Studies on the utilization of urea by growing swine. J. Anim. Sci., 16: 44–54.

Head, M.J. 1957 Factors affecting the efficiency of food utilisation by ruminants. Report of the National Institute for Research in Dairying, p. 80.

Hemsley, J.A. 1964 The utilization of urea-supplemented roughages. Proc. Aust. Soc. Anim. Prod., 5: 321–327.

Hemsley, J.A. & Moir, R.J. 1963 The influence of higher V.F.A. on the intake of urea-supplemented low-quality cereal hay by sheep. Aust. J. agric. Res., 14: 509–517.

Hershberger, T.V., Bentley, O.G. & Moxon, A.L. 1959 Availability of the nitrogen in some ammoniated products to bovine rumen micro-organisms. J. Anim. Sci., 18: 663–670.

Hodges, E.F. 1965 Feed use of urea in the United States. Washington, D.C., U.S. Department of Agriculture, Economic Research Service. Administrative Report. 27 p.

Hogan, J.P. 1961 The absorption of ammonia through the rumen of the sheep. Aust. J. biol. Sci., 14: 448–460.

Houpt, T.R. 1959 Utilization of blood urea in ruminants. Amer. J. Physiol., 197: 115–120.

Hulyi, M.F. 1955 [A biological method of the enrichment of silages in nitrogenous nutrients.] Vestn. Akad. Nauk Ukrajinskoj RSR, 6: 53–60. (In Russian)

Humphrey, K. 1956 The utilization of urea as a protein supplement for ruminants: a review of the literature. Rhodesian agric. J., 53: 241–256.

Ivanov, I. & Plotnikova, A. 1961 [Ammoniating of straw.] Moloch. myas. Zhiv., 6: 27–29. (In Russian)

Iwata, H. 1959 Effects of urea and its derivatives on milk production and quality. Proc. 15th int. Dairy Congr., I: 54–58.

Johnson, B.C. et al. 1942 The relative efficiency of urea as a protein substitute in the ration of ruminants. J. Anim. Sci., 1: 236–245.

Johnson, B.C. et al. 1944 On the mechanism of non-protein nitrogen utilization by ruminants. J. Anim. Sci., 3: 287–298.

Johnson, R.F., Keith, T.B. & Lehrer, W.P. Jr. 1955 Beef cattle feeding experiments with urea. Moscow, Idaho Agricultural Experiment Station. Bulletin 225.

Jones, H.L. & Combs, G.F. 1953 Effect of aureomycin HCl on the utilization of inorganic nitrogen by the chick. Poultry Sci., 32: 873–875.

Jordan, R.M. 1952 Effect of urea on pregnant ewes. J. Anim. Sci., 11: 768.

Kay, M. et al. 1967 The nutrition of the early-weaned calf. X. The effect of replacement of fish meal with either urea or ammonium acetate on growth rate and nitrogen retention in calves fed ad libitum. Anim. Prod., 9: 197–201.

Kielanowski, 1962 J., Horszczaruk, F. & Chomyszyn, M. [Ammoniated sugar beet pulp for fattening heifers.] Przegl. hodow., 30: 12–14. (In Polish)

King, P.P. & Hale, W.H. 1955 The production of carbamate in vivo and in vitro by rumen micro-organisms. J. Anim. Sci., 14: 1248.

King, W.A., O'Dell, G.D. & Roderick, D.B. 1957 Utilization of blackstrap molasses, urea in molasses, and ammoniated molasses by dairy heifers. J. Dairy Sci., 40: 810–817.

Kirk, W.G. 1952 Urea and cottonseed meal in the fattening ration. J. Anim. Sci., 11: 769.

Kirk, W.G., Davis, G.K. & Peacock, F.M. 1954 Ammoniated citrus pulp in the fattening ration. J. Anim. Sci., 13: 989–990.

Knodt, C.B., Williams, J.B. & Brumbaugh, J. 1950 Ammoniated cane molasses in the rations of dairy calves. J. Anim. Sci., 9: 661–662.

Knodt, C.B., Williams, J.B. & Brumbaugh, J. 1951 Ammoniated cane molasses and similar products in the rations of dairy calves. J. Dairy Sci., 34: 1042–1046.

Kondos, A.C. & McClymont, G.L. 1965 Enhanced toxicity of carbon tetrachloride in sheep on high protein intake. Aust. vet. J., 41: 349–351.

Kotze, J.J. & Barnard, H.H. 1957 Winter feeding of sheep in the sour grassveld region. Fmg S. Afr., 33: 50–56.

Krebs, K. 1937 Der Wirt der Amide bei der Fütterung des Rindes. Biedermanns Z. Tierernähr., 9: 394–507.

Kreft, H.W. 1963 Feeding urea to cattle. Proc. S. Afr. Soc. Anim. Prod., 2: 43–44.

Kurelec, V. 1962 [Industrial methods of increasing the content of nitrogen compounds in feeds.] Institutul Central de Cercetari Agricole. Masuri pentry Cresterea Continutului de Proteina in Nutreturi. Bucuresti, Ed. Agro-Silvica. (In Romanian)

Laguta, A.F. 1961 [Straw treated with ammonia solution, its digestibility and nutritive value.] Zhivotnovodstvo, 23: 86–88. (In Russian)

Lassiter, C.A., Brown, L.D. & Keyser, Donald. 1962 An evaluation of diammonium phosphate as a nitrogen source for ruminants. Michigan agric. Exp. Sta. Q. Bull., 44: 763–771.

Lassiter, C.A. et al. 1955 A preliminary evaluation of dicyandiamide and urea for dairy cattle. Lexington, Kentucky Agricultural Experiment Station. Bulletin 638.

Lassiter, C.A. et al.. 1958a High-level urea feeding to dairy cattle. I. Effect of high-level urea feeding on the growth and metabolism of growing dairy heifers without sulfur supplementation. J. Dairy Sci., 41: 281–285.

Lassiter, C.A. et al. 1958b High-level urea feeding to dairy cattle. III. Effect on performance and metabolism of lactating dairy cows. Michigan agric. Exp. Sta. Q. Bull., 41: 326–331.

Lesch, S.F., Pieterse, P.J.S. & Oosthuizen, F.J. 1963 Utilization of the energy in mature veld hay by steers: effect of urea supplementation. Proc. S. Afr. Soc. Anim. Prod., 2: 45–47.

Lewis, D. 1960 Ammonia toxicity in the ruminant. J. agric. Sci., 55: 111–117.

Likhonosova, N.D. 1958 [Studies on the utilization of urea in digestive and metabolic processes in sheep.] Trudy Vsesoiuzn. Nauch.-Issled. Inst. Zhivotn., 22: 100– 107. (In Russian)

Likhonosova, N.D. 1959 [The utilization of urea in digestive and metabolic processes in pregnant and lactating sheep.] Trudy Vsesoiuzn. Nauch.-Issled. Inst. Zhivotn., 23: 274–282. (In Russian)

Lofgreen, G.P., Loosli, J.K. & Maynard, L.A. 1947 The influence of protein source upon nitrogen retention by sheep. J. Anim. Sci., 6: 343–347.

Lofgreen, G.P., Weir, W.C. & Wilson, J.F. 1953 Gains in weight, nitrogen retention and wool growth of lambs fed a ration containing urea supplemented with sodium sulfate. J. Anim. Sci., 12: 347–352.

Lombard, P.E. 1960 The efficacy of urea in the concentrate ration of steers. S. Afr. J. agric. Sci., 3: 459–466.

Loosli, J.K. & Harris, L.E. 1945 Methionine increases the value of urea for lambs. J. Anim. Sci., 4: 435–437.

Loosli, J.K. & McCay, C.M. 1943 Utilization of urea by young calves. J. Nutr., 25: 197–202.

Loosli, J.K. & Warner, R.G. 1958 Distillers' grains, brewers' grains, and urea as protein supplements for dairy rations. J. Dairy Sci., 41: 1446–1450.

Loosli, J.K. & Nicholson, J.W.G. 1960 The comparative value of citrus pulp, cane, molasses and morea for milk production. Cornell Feed Service, 53: 10–11.

Loosli, J.K., Wagner, D.G. & Myers, G.S. Jr. 1963 Value of linseed meal in dairy rations. J. Dairy Sci., 46: 825–829.

Loosli, J.K. et al. 1949 Synthesis of amino-acids in the rumen. Science, 110: 144–145.

Mackenzie, H.I. & Altona, R.E. 1964 Observations on a biuret-containing lick as a nitrogen supplement to low-quality roughage. J. S. Afr. vet. med. Ass., 35: 309–312.

McCall, Ralph & Graham, W.R. Jr. 1953 The value of several ammoniated products as feed for beef cattle. J. Anim. Sci., 12: 798–805.

McClymont, G.L. 1948 Comparative value of urea and protein for supplementing low-protein rations for grazing cattle. Aust. vet. J., 24: 197–204.

McDonald, I.W. 1952 The role of ammonia in ruminal digestion of protein. Biochem. J., 51: 86–90.

McDonald, I.W. 1958 The utilization of ammonia-nitrogen by the sheep. Proc. Aust. Soc. Anim. Prod., 2:46–51.

McNaught, M.L. & Smith, J.A.B. 1947 The role of the microflora of the alimentary tract of herbivora with special reference to ruminants. 4. Nitrogen metabolism in the rumen. Nutr. Abstr. Rev., 17: 18–31.

Meiske, J.C. et al. 1955 The utilization of urea and biuret as sources of nitrogen for growing-fattening lambs. J. Anim. Sci., 14: 941–946.

Meredith, D.et al., 1954 Urea feeding experiments in 1953. Veld, 14 (15): 293–297. Autumn issue.

Merrill, W.G. et al. 1959 Value of cane molasses and urea fed with early- and late-cut hay in a ration for dairy heifers. Ithaca, New York, Cornell Agricultural Experiment Station. Bulletin 937.

Millar, H.C. 1942 Ammoniated agricultural materials. U.S. Patent 2,293,854.

Millar, H.C. 1944 Ammoniated sugar beet pulp as a new nitrogenous feed for ruminants. J. Dairy Sci., 27: 225–241.

Mills, R.C. et al. 1942 The utilization of urea by ruminants as influenced by the presence of starch in the ration. J. Dairy Sci., 25: 925–929.

Mills, R.C. et al. 1944 Utilization of urea and growth of heifer calves with corn molasses or cane molasses as the only readily available carbohydrate in the ration. J. Dairy Sci., 27: 571–578.

Minson, D.J. & Pigden, W.J. 1961 Effect of a continuous supply of urea on utilization of low-quality forages. J. Anim. Sci., 20: 962.

Modianov, A.V. 1962 [Ensiling of maize with the addition of urea and ammonium salts.] Institutul Central de Cercetari Agricole. Masuri pentru Cresterea Continutului de Proteina in Nutreturi. Bucuresti, Ed. Agro-Silvica. (In Romanian)

Modianov, A.V. et al. 1960 [The use of urea and ammonium sulfate for the enrichment of maize silage.] Vestn. sel'-hoz. Nauki, 4. (In Russian)

Morris, E.B. & Horton, O.H. 1959 Supplementation of cottonseed hulls with an alcohol-urea preparation. J. Dairy Sci., 42: 353–357.

Morris, J.G. 1958a Drought feeding studies with cattle and sheep. I. The use of native grass hay (bush hay) as the basal component of a drought fodder for cattle. Qld J. agric. Sci., 15: 161–180.

Morris, J.G. 1958b Drought feeding studies with cattle and sheep. II. The use of sorghum silage with and without urea as a drought fodder for cattle. Qld J. agric. Sci., 15: 181–194.

Morris, J.G. 1958c Drought feeding studies with cattle and sheep. IV. The use of native grass hay (bush hay) and sorghum silage as basal components of a drought fodders for sheep. Qld J. agric. Sci., 15: 203–213.

Morris, J.G. & Levitt, M.S. 1964 Effect of urea on digestibility of steers of dietary components, particularly starch. Aust. J. Sci., 27: 116–117.

Morris, J.G. 1965 Finishing cattle on rations with high proportions of grain. Aust. vet. J., 41: 70–74.

Murray, C.A. & Romyn, A.E. 1939 Urea as a possible substitute for peanut cake for wintering young stock. Rhodesia agric. J., 36: 554–559.

Nehring, K. 1939 Feeding trials of urea supplements (Amidschnitzel) for milking cows. Forschungsdienst, 7: 86–98.

Nehring, K. & Schramm, W. 1943 On the effect of ammonium formate and urea on the protein content of lambs during feeding of green fodder to the question of protein substitutes through amids. Biedermanns Z. Tierernähr., 15: 241–257.

Noble, R.L., Pope, L.S. & Gallup, W.D. 1955 Urea and methionine in fattening rations for lambs. J. Anim. Sci., 14: 132–136.

Noland, P.R., Ford, B.F. & Ray, M.L. 1955 The use of ground chicken litter as a source of nitrogen for gestating-lactating ewes and fattening steers. J. Anim. Sci., 14: 860–865.

O'Bryan, M.S. 1960 Observations on the utilization by cattle of Axenopus affinis following foliar application of urea, molasses and monosodium phosphate. Qld J. agric. Sci., 17: 135–146.

Olcese, O. & PEarson, P.B. 1948 Value of urea in the diet of rabbits. Proc. Soc. exp. Biol. Med., 69: 377–379.

Oltjen, R.R., Sirny, T.J. & Tillman, A.D. 1962 Purified diet studies with sheep. J. Anim. Sci., 21: 277–283.

Oltjen, R.R., Robbins, J.D. & Davis, R.E. 1964 Studies involving the use of glutamic acid in ruminant nutrition. J. Anim. Sci., 23: 767–770.

Otagaki, K.K. et al. 1956 Utilization of non-protein nitrogen in rations of milking cows under Hawaiian conditions. J. Dairy Sci., 39: 1753–1758.

Owen, E.C., Smith, J.A.B. & Wright, N.C. 1943 Urea as a partial protein substitute in the feeding of dairy cattle. Biochem. J., 37: 44–53.

Palamaru, E., Hornoiu, M. & Baia, G. 1962 [The use of urea in rations for ruminants.] Institutul Central de Cercetari Agricole. Masuri pentru Cresterea Continutului de Proteina in Nutreturi. Bucuresti, Ed. Agro-Silvica. (In Romanian)

Parkham, B.T. et al. 1953–54 A comparison of cottonseed meal, urea and ammoniated molasses as a source of nitrogen in the ration of dairy heifers. Baton Rouge, Louisiana Agricultural Experiment Station. Research in agriculture: annual report, p. 80–81.

Pearson, R.M. & Smith, J.A.B. 1943 The utilization of urea in the bovine rumen. 3. The synthesis and break-down of protein in rumen ingesta. Biochem. J., 37: 153–164.

Peirce, A.W. 1951a Effect of ingestion of urea on the rate of wool production by Merino sheep. Aust. J. agric. Res., 2: 435–446.

Peirce, A.W. 1951b The influence of the amount of starch on the utilization of urea by sheep. Aust. J. agric. Res., 2: 447–456.

Peirce, A.W., Moule, G.R. & Jackson, M.N.S. 1955 The effect of thrice-weekly ingestion of urea on wool production in grazing sheep. Qld J. agric. Sci., 12: 107–117.

Perez, C.B., Warner, R.G. & Loosli, J.K. 1967 Evaluation of urea-phosphate for ruminants. J. Anim. Sci., 26: 810–819.

Perry, T.W.et al. 1965 Corn stover silage for wintering pregnant heifers. Purdue 1965 Cattle Feeders' Day Progress Report, p. 170.

Pieterse, P.J.S. & Lesch, S.F. 1963 The effect of urea on the nitrogen metabolism of steers fed on poor-quality veld hay. Proc. S. Afr. Soc. Anim. Prod., 2: 48–52.

Pieterse, P.J.S. & Oosthuizen, S.F. 1963 Influence of molasses and maize meal as source of carbohydrate on utilization of urea by bovines. S. Afr. J. agric. Sci., 6: 149–154.

Pieterse, P.J.S., Lesch, S.F. & Van Schalkwyk, A.P. 1963 Rate of passage of poor-quality veld hay through the digestive tract of beef steers. S. Afr. J. agric. Sci., 6: 737–740.

Pope, L.S., Gallup, W.D. & Whitehair, C.K. 1952 The value of urea in rations for ewes during gestation and lactation. Stillwater, Oklahoma Agricultural Experiment Station. Miscellaneous Publication 27: 49–53.

Pope, L.S., Gallup, W.D. & Read, D.C. 1953 Nutritional studies with pregnant and lactating ewes. Stillwater, Oklahoma Agricultural Experiment Station. Miscellaneous Publication 31: 26–32.

Pope, L.S., Humphrey, R.D. & MacVicar, R. 1955 Urea-molasses and ammoniated molasses as supplements for beef cattle on native grass. Stillwater, Oklahoma Agricultural Experiment Station. Miscellaneous Publication 43: 51–54.

Pope, L.S. et al. 1954 Alfalfa hay, dehydrated alfalfa meal and ammoniated cane molasses in rations for fattening steer calves. Stillwater, Oklahoma Agricultural Experiment Station. Miscellaneous Publication 34: 60–65.

Popov, V.G., Ievcishevich, L.I. & Popova, T.G. 1962 [The utilization of ammoniated straw in rations for dairy cows.] Zhivotnovodstvo, 24: 60–61. (In Russian)

Pratt, D.R. & England, M.W. 1962 Effects of a liquid urea-ethyl alcohol-phosphoric acid-molasses-mineral mix on feeder lambs. Stillwater, Oklahoma Agricultural Experiment Station. Technical Bulletin T94.

Pres, J. & Sobczak, Z. 1962 [Various ammonium compounds in rations for fattening cattle.] Zesz. nauk. wyzsy. Szk. roln. Krakow, 41: 71–82. (In Polish)

Pujszo, K. 1960 Studies on the ammonification of some feeds. Roczn. Naukroln., 75-B: 601–606. (English summary)

Pujszo, K. 1961 Studies on ammonia fixation by the sugar beet pulp. Roczn. Naukroln., 78-B: 237–242. (English summary)

Pujszo, K. 1963 Studies on ammonia fixation by the sugar beet pulp and straw. (Typescript)

Reaves, J.L., Bush, L.J. & Stout, J.D. 1966 Effect of different non-protein nitrogen sources on acceptability of rations by dairy cattle. J. Dairy Sci., 49: 1142–1144.

Reid, J.T. 1953 Urea as a protein replacement for ruminants: a review. J. Dairy Sci., 36: 955–996.

Repp, W.W., Hale, W.H. & Burroughs, W. 1955 The value of several non-protein nitrogen compounds as protein substitutes in lamb fattening rations. J. Anim. Sci., 14: 901–908.

Richardson, D., Baker, F.H. & Cox, R.F. 1955 The value of ammoniated hydrol in beef cattle wintering rations. Forty-Second Annual Livestock Feeders' Day. Manhattan, Kansas Agricultural Experiment Station. Circular 320: 46–48.

Richardson, D. et al. 1954 The value of ammoniated molasses in beef cattle wintering rations. Manhattan, Kansas Agricultural Experiment Station. Circular 308.

Richardson, D. et al. 1956–57 Self-feeding molasses mixed with various combinations of urea or ammonia with phosphoric acid and with or without ethyl alcohol in the wintering rations of beef heifer calves. Manhattan, Kansas Agricultural Experiment Station. Circular 349: 74–76.

Richardson, D. et al. 1958 Self-feeding molasses mixed with urea, phosphoric acid and water with or without ethyl alcohol to beef heifers. I. Feed-lot and carcase study. Manhattan, Kansas Agricultural Experiment Station. Circular 358: 65–68.

Richter, K. & Bizer, E. 1940 The action of urea and glycine as protein substitutes in the feeding of milk cows. Zeit. Tierernähr. Futtermittelk., 4: 59–80.

Riggs, J.K. 1958 Fifty years of progress in beef cattle nutrition. J. Anim. Sci., 17: 981–1006.

Rose, W.C. et al. 1949 The utilization of nitrogen of ammonium salts, urea and certain other compounds in the synthesis of non-essential amino-acids in vivo. J. biol. Chem., 181: 307–316.

Rupel, I.W., Bohstedt, G. & Hart, E.B. 1943 The comparative value of urea and linseed meal for milk production. J. Dairy Sci., 26: 647–664.

Rusoff, L.L., Lovell, R.T. & Waters, W.H. 1962 Urea phosphate as a source of phosphorus and nitrogen for growing dairy heifers. J. Dairy Sci., 45: 675–676.

Russell, E.L., Hale, W.H. & Hubbert, F., Jr. 1962 Evaluation of diammonium phosphate as a source of nitrogen for ruminants. J. Anim. Sci., 21: 523–526.

Ryley, J.W. 1961 Drought feeding studies with cattle. 6. Sorghum silage, with and without urea, as a drought fodder for cattle in late pregnancy and early lactation. Qld J. agric. Sci., 18: 409–424.

Sarbasov, T.I. 1962 [The enrichment of maize silage with urea and ammonium sulfate.] Trudy Vsesoiuzn. Nauch.-Issled. Inst. Zhivotn., 24: 173–181. (In Russian)

Schaadt, H. Jr., Johnson, R.R. & McClure, K.E. 1966 Adaptation to and palatability of urea, biuret and diammonium phosphate as NPN sources for ruminants. J. Anim. Sci., 25: 73–77.

Schmidt-Nielsen, B. et al. 1957 Urea excretion in the camel. Amer. J. Physiol., 188: 477–484.

Schoenemann, K. & Kilian, E.F. 1960 Amidfütterung. Stand des Problems, eigene Untersuchungen und Beurteilung der Aussichten. Arch. Tierernähr., 10: 37–80.

Seidler, S.et al. 1962 [Ammoniated feeds in the feeding of ruminants and non-ruminants.] Zesz. probl. Postep. Nauk Roln., 36: 125–127 (In Polish)

Shepherd, J.H. 1963 Utilization of dry summer pastures and cereal stubbles. Wool Technol., 10: 69–74.

Shunkova, J.S. & Slesarov, J.K. 1961 [Nutritive value of distillery slop, supplemented with ammonium lactate.] Trudy Centr. Inst. Spirtovoj Lik.-vodochnoj Promyshl., 11: 340–346. (In Russian)

Slen, S.B. & Whiting, F. 1955 Wool and lamb production as affected by the sources of protein in the ration of the mature ewe. J. Anim. Sci., 14: 844–859.

Smith, C.A. 1962 The utilization of Hyparrhenia veld for the nutrition of cattle in the dry season. III. Studies on the digestibility of the produce of mature veld and veld hay, and the effect of feeding supplementary protein and urea. J. agric. Sci., 58: 173–178.

Snook, L.C. 1958 Supplying urea to stock through drinking water. J. Aust. Inst. agric. Sci., 24: 357–358.

Snook, L.C. 1962 Urea for sheep and cattle on dry feed. J. Agric. West. Aust., 3: 940–947.

Sobczak, Z. 1961a [Ammonium sulfate as protein substitute for sheep.] Zesz. probl. Postep. Nauk Roln., 28: 81–83. (In Polish)

Sobczak, Z. 1961b [The nutritive value of corn silage fed with addition of various protein concentrates.] Zeszyty Naukowe WSR we Wroclawiu, Zootechnika, 8: 89–98. (In Polish)

Sobczak, Z. 1961c [The nutritive value of sugar beet pulp ensiled with addition of ammonium sulfate.] Zesz. probl. Postep. Nauk Roln., 28: 89–92 (In Polish)

Sobczak, Z. 1962a [The digestibility of sugar beet pulp supplemented with various nitrogen compounds.] Zesz. probl. Postep. Nauk Roln., 36: 115–117. (In Polish)

Sobczak, Z. 1962b [Supplements of urea and ammonium sulfate in rations for fattening cattle.] Zesz. probl. Postep. Nauk Roln., 36: 113–114. (In Polish)

Sobczak, Z. 1963 [Various ammonium salts in rations for sheep.] Zeszyty Naukwe WSR we Wroclawiu, Zootechnika, 10: 171–186. (In Polish)

Sobczak, Z., Skrzypek, M. & Detkens, S. 1962 [Ammonium sulfate as a protein replacement in rations for dairy cows.] Zeszyty Naukowe WSR we Wroclawiu, Zootechnika, 9: 83–96. (In Polish)

Southwell, B.L., Hale, O.M. & McCormick, W.C. 1958 Poultry house litter as a protein supplement in steer fattening rations. Athens, Georgia Agricultural Experiment Station. Mimeograph Series, N.S., 55.

Stangel, H.J., Johnson, R.R. & Spellman, A. 1963 Urea and non-protein nitrogen in ruminant nutrition. 2nd ed. New York, Allied Chemical Corp. 489 p.

Starks, P.B. et al. 1953 The utilization of feed nitrogen by lambs as affected by elemental sulfur. J. Anim. Sci., 12: 480–491.

Starks, P.B. et al. 1954 Response of lambs fed varied levels of element sulfur, sulfate sulfur and methionine. J. Anim. Sci., 13: 249–257.

Stiles, H.R. 1952 Feed supplement. U.S. Patent 2,603,567.

Stobo, I.J.F., Roy, J.H.B. & Gaston, H.J. 1967 The protein requirement of ruminant calf. III. The ability of the calf weaned at five weeks of age to utilize urea given as a supplement to a low-protein concentrate. Anim. Prod., 9: 155–165.

Swift, R.W. et al. 1951 The effect of alfalfa ash upon roughage digestion in sheep. J. Anim. Sci., 10: 434–438.

Temple, R.W. & Wiggins, L.F. 1956 The ammoniation of bagasse. Int. Sugar J., 58: 9–12.

Terri, A.E. & Colovos, N.F. 1963 Effect of urea in the ration of cattle on vitamin synthesis in the rumen. J. Dairy Sci., 46: 864–865.

Thomas, W.E. et al. 1950 The utilization of inorganic sulfates and urea nitrogen by lambs. J. Nutr., 43: 515–523.

Thompson, G.B. 1961 Comparison of a liquid supplement (Morea) with soybean meal in wintering and fattening beef cattle rations. Columbia, Missouri Agricultural Experiment Station. Twenty-Third Annual Spring Livestock Day. Special Bulletin, 5: 8–13.

Thompson, N.R. et al. 1952 The utilization of urea by dairy cattle. J. Dairy Sci., 35: 1010–1016.

Tillman, A.D. & Kidwell, J.F. 1951 The value of ammoniated condensed distillers' molasses solubles as a feed for beef cattle. J. Anim. Sci., 10: 934–938.

Tillman, A.D. & Swift, R.W. 1953 The utilization of ammoniated industrial by-products and urea by sheep. J. Anim. Sci., 12: 201–212.

Tillman, A.D. et al. 1957 Utilization of ammoniated industrial products by cattle. J. Anim. Sci., 16: 179–189.

Tribe, D.E. 1963 Urea feeding. Past. Rev., 73: 803–804, 931–933.

Tribe, D.E. & Coombe, J.B. 1958 Urea and molasses for drought feeding. Past. Rev., 68: 759–761.

Tulloh, N.M., Watson, J.J. & Burnell, D.A. 1963 A system for the through feeding of supplements to grazing sheep. Aust. J. expt. Agric. Anim. Husb., 3: 276–279.

Van der Vyver, B.J. 1954 Urea as a source of protein for cattle. Fmg S. Afr., 29: 286–289.

Van la Chevallerie, M. 1959 Urea for ruminants: injudicious use dangerous. Fmg S. Afr., 35: 44–45.

Verbeek, W.A. & Van la Chevallerie, M.K.S.L. 1960 Guano as a source of protein for cattle. S. Afr. J. agric. Sci., 3: 613–616.

Veresenko, K.I. 1958 [The enrichment of silages in organic nitrogen compounds.] Sbornik Nauchnykh Trudov Inst. Zhivotn. Lesostiepi i Polesia Ukr. SRR, 17: 205–219. (In Russian)

Virtanen, A.I. 1963 Production of cows milk on protein-free fodder using urea and ammonium nitrogen as the sources of nitrogen and purified carbohydrates as the sources of energy. Lecture, Twelfth Congress, Association of Scandinavian Agricultural Scientists, Helsinki.

Virtanen, A.I. 1966 Milk production of cows on protein-free feed. Science, 153: 1603– 1614.

Volcani, R. & Roderig, C. 1953 A preliminary report on the feeding of cattle and sheep with nitrogen enriched orange peels. Rehovot, Israel Agricultural Research Station. Records, 4: 21–22.

Vukavic, D. et al. 1961 [Replacement of sunflowerseed meal with urea as source of nitrogen in fattening young bulls.] Arh. poljopr. Nauke, 14: 17–24. (In Yugoslavian)

Ward, G.M., Huffman, C.F. & Duncan, C.W. 1955 Urea as a protein extender for lactating cows. J. Dairy Sci., 38: 298–302.

Watson, C.J. et al. 1949 The nutritive value of nitrogenous compounds for ruminants. I. The nutritive value of urea as a protein supplement. Sci. Agric., 29: 173– 184; II. The formation of body protein from urea labelled with the isotope N15. Sci. Agric., 29: 185–188; III. Synthesis of urea containing N15. Sci. Agric., 29: 189–190.

Weber, A.D. & Hughes, J.S. 1942 The mineral requirements of fattening cattle. Manhattan, Kansas Agricultural Experiment Station. Eleventh biennial report, p. 38–39.

Wegner, M.I. et al. 1940 The “in vitro” conversion of inorganic nitrogen to protein by micro-organisms from the cow's rumen. J. Dairy Sci., 23: 1123–1129.

Wegner, M.I. et al. 1941 Preliminary observations on chemical changes of rumen ingesta with and without urea. J. Dairy Sci., 24: 51–56.

Wetterau, H. & Holzschuh, W. 1958–59 Maissilage als Grundfutter and Amidschnitzel, als Kraftfutter bei der Winterfütterung der Milchkühe. Jahrbuch der Arbeitsgemeinschaft für Fütterungsberatung, 2: 20–34.

Willet, E.L., Henke, L.A. & Maruyama, C. 1946 The use of urea in rations for dairy cows under Hawaiian conditions. J. Dairy Sci., 29: 629–637.

Williams, N.M. et al. 1959 The growth and appetite of sheep on high-fibre low-protein diets supplemented with urea and molasses. Emp. J. exp. Agric., 27: 107–116.

Willman, J.P., Morrison, F.B. & Klosterman, E.W. 1946 Lamb-feeding experiments. Ithaca, New York, Cornell Agricultural Experiment Station. Bulletin 834: 1–62.

Willoughby, W.M. 1960 & Axelsen, A. Selective consumption of dry pasture by sheep as affected by spraying with urea or molasses or both. Aust. J. agric. Res., 11: 827–835.

Wise, G.H. 1944 et al. Urea-treated corn silage vs. untreated corn silage as a feed for lactating dairy cows. J. Dairy Sci., 27: 649.

Woodward, T.E. & Shepherd, J.B. 1944 Corn silage made with the addition of urea and its feeding value. J. Dairy Sci., 27: 648.

Work, S.H. & Henke, L.A. 1939 The value of urea as a protein-supplement replacement for dairy heifers. Proc. Amer. Soc. Anim. Prod., 32: 404–406.

Zafren, S.I. 1959 [Increasing the nutritive value of straw and its simultaneous enrichment in nitrogen.] Dokl. Vsesojuzn. Akad. Sel-Hozj. Nauk Lenina, 8: 9–14. (In Russian)

Zafren, S.I. & Vetshera, A.F. 1961 [Ammonia solution increases the content of nutritive nitrogen in silages.] Kukuruza, 10: 57–59. (In Russian)

Ziolecki, A. 1960 Utilization of ammonia by the rumen flora of sheep. (Typescript)

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FinlandAkateeminen Kirjakauppa, 2 Keskuskatu, Helsinki.
FranceEditions A. Pedone, 13 rue Soufflot, Paris 5e.
GermanyPaul Parey, Lindenstrasse 44–47, Berlin SW 61.
Greece“Eleftheroudakis” 4 Nikis Street, Athens; Institute of Scientific Publications, 9 Amerikis Street, Athens.
GuatemalaSociedad Económico Financiera, Edificio “El Cielito.” Despacho 222, Zona 1, Guatemala.
HaitiMax Bouchereau, Librairie “A la Caravelle,” B.P. 111B, Port-au-Prince.
Hong KongSwindon Book Co., 13–15 Lock Road, Kowloon.
IcelandSnaebjörn Jónsson and Co. h.f., Hafnarstraeti 9, P.O. Box 1131, Reykjavik.
IndiaOxford Book and Stationery Co., Scindia House, New Delhi; 17 Park Street, Calcutta.
IndonesiaPembangunan Ltd., 84 Gunung Sahari, Jakarta.
IranEconomist Tehran, 99 Sevom Esfand Avenue, Tehran.
IraqMackenzie's Bookshop, Baghdad.
IrelandThe Controller, Stationery Office, Dublin.
IsraelEmanuel Brown, formerly Blumstein's Bookstores Ltd., P.O. Box 4101, Tel Aviv.
ItalyLibreria Internazionale Rizzoli, Largo Chigi, Rome; A.E.I.O.U., Via Meravigli 16, Milan; Libreria Commissionaria Sansoni, S.p.A., Via Lamarmora 45, Florence.
JamaicaBolivar, 1 Grove Road, Kingston 10.
JapanMaruzen Company Ltd., Tori-Nichome 6, Nihonbashi, Tokyo.
KenyaThe E.S.A. Bookshop, P.O. Box 30197, Nairobi; University Bookshop, University College, P.O. Box 30197, Nairobi.
KoreaThe Eul-Yoo Publishing Co. Ltd., 5 2-Ka, Chong-ro, Seoul.
LebanonDar Al-Maaref Liban S.A.L., place Riad El-Solh, B.P. 2320, Beirut.
MalaysiaCaxton Stationers Ltd., 13–15 Leboh Pasar Besar, Kuala Lumpur.
MauritiusNalanda Company Limited, 30, Bourbon Street, Port Louis.
MexicoManuel Gómez Pezuela e Hijo, Donceles 12, México, D.F.; Editorial Iztaccihuatl, S.A., Miguel Schultz, 21 México 4, D.F.; Av. Morelos Ote 437, Monterrey, N.L.; Colón 175, Guadalajara, Jal.
MoroccoLibrairie “Aux Belles Images,” 281 avenue Mohammed V, Rabat.
NetherlandsN.V. Martinus Nijhoff, Lange Voorhout 9, The Hague.
New ZealandGovernment Printing Office: Government Bookshops at State Advances Building, Rutland Street, P.O. Box 5344, Auckland; 20 Molesworth Street, Private Bag, Wellington; 112 Gloucester Street, P.O. Box 1721, Christchurch; Stock Exchange Building, corner Water and Bond Streets, P.O. Box 1104, Dunedin.
NicaraguaLibrería Universal, 15 de Septiembre 301, Managua.
NigeriaUniversity Bookshop Nigeria Ltd., University College, Ibadan.
NorwayJohan Grundt Tanum Forlag, Karl Johansgt. 43, Oslo.
Pakistan, EastShilpa Niketan, 29, D.I.T. Super Market, Mymensingh Road, Dacca-2.
Pakistan, WestMirza Book Agency, 65 The Mall, Lahore 3.
PanamaAgencia Internacional de Publicaciones J. Menéndez, Apartado 2052, Panama.
ParaguayAgencia de Librerías de Salvador Nizza, Calle Pte. Franco No. 39–43. Asunción.
PeruLibrería International del Perú, S.A., Casilla 1417, Lima; Librería La Universidad, Av. Nicolás de Piérola 639, Lima; Librería Studium, Amargura 939, Lima; Distribuidora Inca, Emilio Althaus 470, Lince, Lima.
PhilippinesThe Modern Book Company, 928 Rizal Avenue, Manila.
PolandArs Polona, Krakowskie Przedmiescie, 7 Warsaw; Ruch Export-Import Enterprise, Ul. Wronia 23, Warsaw.
PortugalLivraria Bertrand, S.A.R.L., Apartado 37, Amadora.
RomaniaCartimex, P.O. Box 134–135, Bucharest.
Saudi ArabiaKhazindar Establishment, King Faysal Street, Riyadh.
South AfricaVan Schaik's Book Store Ltd., P.O. Box 724, Pretoria.
SpainLibrería Mundi-Prensa, Castelló 37, Madrid; Librería Agricola, Fernando VI, 2, Madrid 4; José Bosch, Librero, Ronda Universidad 11. Barcelona; Librería General, S. Miguel 4, Saragossa.
SwedenC.E. Fritze, Fredsgatan 2, Stockholm 16; Gumperts A.B., Göteborg; Universitetsbokhandel, Sveavägen 166, Stockholm Va.
SwitzerlandLibrairie Payot S.A., Lausanne and Geneva; Hans Raunhardt, Kirchgasse 17, Zurich 1.
SyriaLibrairie Internationale, B.P. 2456, Damascus.
TaiwanThe World Book Company Ltd., 99 Chungking South Road, Section 1, Taipeh.
TanzaniaDar es Salaam Bookshop P.O. Box 9030, Dar es Salaam.
ThailandFAO Regional Office for Asia and the Far East, Maliwan Mansion, Bangkok; Suksapan Panit, Mansion 9, Rajadammern Avenue, Bangkok.
TogoLibrairie du Bon Pasteur, B.P. 1164, Lomé.
TurkeyLibrairie Hachette, 469 Istiklal Caddesi, Beyoglu, Istanbul.
UgandaThe E.S.A. Bookshop, P.O. Box 2615, Kampala; University Bookshop, Makerere University College, P.O. Box 16031, Kampala.
United Arab RepublicLibrairie Hachette, 45 bis rue Champollion, Cairo.
United Kingdom and Crown ColoniesHer Majesty's Stationery Office, 49 High Holborn, London, W.C.1; 423 Oxford Street, London W.1; P.O. Box 569, London, S.E.1 (Trade and London area mail orders); 13a Castle Street, Edinburgh, 2; 109 St. Mary Street, Cardiff CF1 1JW; 7–11 Linenhall Street, Belfast BTZ 8AY; Brazennose Street, Manchester, 2; 258–259 Broad Street, Birmingham 1; 50 Fairfax Street, Bristol 1.
United States of AmericaNational Agency for International Publications, Inc. (NAIP), 317 East 34th Street, New York, N.Y. 10016.
UruguayEditorial Losada Uruguaya S.A., Colonia 1060, Montevideo; Barreiro y Ramos, 25 de Mayo esq. J.C. Gómez, Montevideo; Librería Albe, Soc. Com., Cerritos 566, Montevideo.
VenezuelaSuma S.A., Calle Real de Sabana Grande, Caracas; Librería Politécnica, Apartado del Este 4845, Caracas; Librería del Este, Pericás S.A., Av. Fco. de Miranda 52, Edificio Galipán, Caracas; Librería Técnica Vega, Plaza Las Tres Gracias, Edificio Odeón, Los Chaguaramos, Caracas.
YugoslaviaJugoslovenska Knjiga, Terazije 27/11, Belgrade; Prosveta Export-Import Agency, Terazije 16, Belgrade; Cankarjeva Zalozba, P.O. Box 201 - IV, Ljubljana.
Other countriesRequests from countries where sales agents have not yet been appointed may be sent to: Distribution and Sales Section, Food and Agriculture Organization of the United Nazions, Via delle Terme di Caracalla, 00100 Rome, Italy.
 FAO publications are priced in U.S. dollars and pounds sterling. Payment to FAO sales agents may be made in local currencies. Price: $ 2.00 or 16s. PS/65739/10.68/E/1/3700

Price: $ 2.00 or 16s.PS/65739/10.68/E/1/3700
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