ORIGINAL PAPER
Associations between leptin gene polymorphism
and some milk performance traits of cattle
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Agricultural University of Szczecin,
Department of Genetics and Animal Breeding,
Doktora Judyma 6, 71-466 Szczecin, Poland
Publication date: 2005-03-18
Corresponding author
H. Kulig
Agricultural University of Szczecin,
Department of Genetics and Animal Breeding,
Doktora Judyma 6, 71-466 Szczecin, Poland
J. Anim. Feed Sci. 2005;14(2):235-243
KEYWORDS
ABSTRACT
The aim of this study was to estimate the relations between the LEP/HphI, LEP/Sau3AI
genotypes vs milk performance traits (yields of milk, protein, and fat, as well as protein and fat
content) in 905 Polish Black-and-White cows, kept in Pomerania. The frequencies of LEP/HphI
genotypes were: AA, 0.582; AB, 0.364; BB, 0.054. The frequencies of LEP/Sau3AI genotypes
were: AA, 0.638; AB, 0.189; AC, 0.137; BB, 0.015; BC, 0.013, and CC, 0.008. Statistically
significant (P≤0.01) relations between the leptin genotypes (LEP/HphI, LEP/Sau3AI) and milk,
protein and fat yields were found. These traits were significantly higher in the LEP/HphI AA and
LEP/Sau3AI BB genotypes.
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