Indices of beef productivity of sons and grandsons of servicing bulls-carriers of immunodeficiency syndrome of cattle (BLAD) | Показатели мясной продуктивности сыновей и внуков быков-производителей – носителей синдрома иммунодефицита крупного рогатого скота (BLAD)
2012
Tanana, L.A. | Epishko, T.I., Grodno State Agrarian Univ. (Belarus) | Shejko, I.P., National Academy of Sciences. Scientific and Practical Center of Animal Breeding (Belarus) | Trakhimchik, R.V., Grodno State Agrarian Univ. (Belarus)
In the conditions of the conditions of the Republic of Belarus there were studied indexes of meat productivity of sons and grandsons of servicing bulls, carriers of immunodeficiency syndrome of cattle (BLAD). As a result of research it is found that the differences on the daily average gain of live weight between sons and their herdmates, grandsons and their herdmates, the servicing bull Drozd 400092, carrier of mutations in CD18 TL/TL vary within Р less than 0.05 and Р less than 0.01. During the periods of post-natal development the herdmates in both experiments are characterized by a higher level of relative live weight gains. The dynamics of these gains witnesses about the ability of the cattle of these groups to retain a high growth rate for a long period. The study of a morphological composition of the half carcasses of experimental cattle shows that considerable distinctions on meat yield were observed in humeroscapulars, necks and legs of half carcasses of bulls (Р less than 0.01 - Р less than 0.001) which were not immunodeficiency syndrome carriers.
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