This paper aims to give a brief survey of dairy cattle breeding in the tropical countries of South America which, for this purpose, are taken to be Bolivia, northern Brazil, Colombia, Ecuador, Peru and Venezuela. Collectively the region is characterised by an extreme range of climatic types. Of particular importance in this context is the modifying influence on temperature of the altitude of the Andes mountains in large parts of all the countries except Brazil, and the cooling effect of the H u m b o l d t Current on the climate of coastal Peru.

Pearson L. de Vaccaro

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 2, Madrid, Spain, 253–261, 1974
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