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PHENOTYPIC VARIABILITY OF FERTILITY AND MILK TRAITS IN OFFSPRING OBTAINED BY INSEMINATION BY SEXED AND CONVENTIONAL SEMEN OF HOLSTEIN BREED BULLS
(Faculty of Agricultural Sciences and Food, Skopje, 10-2018)
The objective of this paper was to compare heifers reproductive traits and characteristics of their
calves after artificial insemination performed by conventional (non-sexed) and sexed sperm on 6
commercial farms in ...
Variability and heritability of milk traits of Holstein-Frisian bull dams and their progeny
(Serbian Genetics Society, Belgrade, 2018)
The research was performed on Holstein-Friesian and Black and White bull dams reared on five farms of Agricultural Corporation of Belgrade - PKB. The study included 575 lactations of cows selected as bull dams and their ...