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Influence of age on sperm production's indicators of bulls

Mussabekov Aidos, Shamshidin Aljan, Alshinbaev Orynbasar


The results obtained in the study age dynamics of indicators of sperm production of breeding bulls of black-motley and hill breeds indicate on the Republican Center of livestock breeding JSC "ASIL TYLІK" Akmola Province, Kazakhstan indicate that the quantity of the received sperm production changes by years of their use. Special differences of age dynamics between breeds it isn't observed.


Ivanov, Y.A., 1998. Improvement a selection system of breeding bulls of black-motley breed populations in the Russian Federation: Agr. Sci., 06.02.01 / Y.A., Ivanov; Institute tribes. -P. Forest Glade, 19.

Instructions on the organization of technology of artificial insemination and embryo transplantation agricultural animals, 2000. M.: M in Agricultural RF, 175; 101.

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