The age of first insemination for heifers, depending on the genotype of the fathers and of the season of birth
Journal Title: «Таврійський науковий вісник» - Year 2018, Vol 99, Issue
Abstract
Studied the effect of birth season of heifers obtained from parents of different genotypes, for the duration of age of the first insemination. Established a difference on this indicator is from the daughters of sires of different lines of Ukrainian red dairy breed. Much more time before attaining the age of first insemination was necessary for the daughters of a bull of Gasera 160 126 8602 lines Nhancer 343 514.47 than by bulls other lines. It is proved that Rangoon and summer calving compared to spring and winter, contribute to the production of Chicks, which later reach the age of first insemination.
Authors and Affiliations
А. П. Китаєва, Л. В. Бакланова
Keywords
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