الفهرس 
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Abstract
This Work was carried out on 161 normal native cattle (25 heifers & 136 cows) ; and 175 native buffaloes (26 heifers &149 buffalo-cows) representing the different stages of reproductive status. The animals were clinically normal free from external internal blood parasit, and T.B. and Br. free. The age of animals varied between 13 month to 8 years. The animals were raised on a uniband nutrtional conditions which included 4 kg. concentration, 30-45 kg.