Relationship between transferrin and ceruloplasmin genotypes and dairy performance in Holstein-Friesian cattle
1998
Teneva, A. | Dimitrova, I. | Gaidarska, V. (Institute of Animal Breeding, Kostinbrod (Bulgaria))
First, second, third and fourth lactation milk yield, milk fat content (%) and milk fat yield (kg) were analyzed to determine the possible association between two genetic loci and milk production in Holstein cows.The polymorphic systems examined were serum transferrin and ceruloplasmin.Milk fat content differences were significantly associated with the genotypic classes involved at the transferrin locus at secound lactation.It was established a significant association between transferrin genotypes and lactation milk yield and milk fat (P0.05).The ceruloplasmin system was no significant deviations for the production.
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