Abstract

This study was conducted to investigate the relation between Tf and Hb-type with some production and adaptive traits in Iraqi local Sharabi and imported Friesian cattle. Tf genes, A, D, and E are found in both breeds at a frequency of 0.464, 0.500 and 0.036 in Friesians and 0.363, 0.426 and 0.191 for the Sharabi.
All Friesians were fixed for gene Hb-A while the A and B genes were segregating at frequencies of 0.64 and 0.46 in the Sharabi.
 

Y. K Al-Timemi, W. K Al-Murrani

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume XIV. Dairy cattle genetics and breeding, adaptation and conservation., , 324–326, 1990
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