The introductory presentation of the equivalent Round Table at the 1st World Congress on Genetics applied to Livestock Production (Rendel, 1974) indicated that nearly half the world's 1200 million cattle live in the tropics while sheep and goats are largely concentrated in the semi-arid zones just north and south of the Tropics of Cancer and Capricorn and pigs are more common in the temperate regions. It was of course recognised that <he many reasons for the low animal productivity in the tropics related to management and feeding as well as to breeding and animal health. As the topic was very large, the first Round Table focussed its discussions on issues concerning increased productivity through breeding in cattle only and in fact more specifically in dairy cattle.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 6. Round tables, , 265-268, 1982
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