I believe that one of the technologies that is very important for ecological animal husbandry, and as a consequence for SAN, is homeopathy.
The main reason: It can treat and prevent diseases efficiently with very small amounts of raw material, so it is not harmful to the environment.
Here in Brazil we have very good results. One example, presented, in the beginning of this month (November 2017), to the Conference on 'Livestock in Sustainable Agriculture' of IFOAM – Animal Husbandry Alliance is the of a ten years evaluation in two milk herds, one of cattle and another of buffaloes. This work has been conducted on an Experimental Station. However, all of them have been tested, at the same time, in private farms, in several Brazilian states, with the same good results.
As homeopathy has been given very low attention, research works in this area should be encouraged.
Antonio Vicente da Silva Dias