There are few long term selection programs designed to increase milk production and adaptation to the tropics. The Jamaica Hope, the AMZ, the Sahiwal herd at Naivasha in Kenya and the more recent Indo-Swiss program in Kerala are examples. The AMZ program has now produced a breed which has been under selection for 30 years. The numbers are still small, but the breed has been exported to Malaysia, Sri Lanka, the Seyschelle Islands, and to Central America. This paper reports the current status of the program, and provides some estimates of the genetic progress obtained thus far.
Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XI. Genetics of reproduction, lactation, growth, adaptation, disease, and parasite resistance., , 544–547, 1986
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