The use of improved indigenous breeds of poultry has some advantages over imported breeds as far as the problems of adaptation to the particular environment is concerned. On the other hand the problem of conservation of poultry gene pool for future use should not be underestimated. There is also great variation in disease resistance between different breeds and even different strains

M. Makarechian

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 3, Madrid, Spain, 1207–1210, 1974
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