1.054
IF5
1.150
IF
Q3
JCR
1.7
CiteScore
0.396
SJR
Q2
SJR
40
MNiSW
148.75
ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

GH and CSN3 gene polymorphisms and their impact on milk traits in cattle

D. Lechniak 1,  
T. Strabel 1,  
D. Przybyła 1,  
G. Machnik 1,  
 
1
August Cieszkowski Agricultural University of Poznań, Department of Genetics and Animal Breeding, Wołyńska 33, 60-637 Poznań, Poland
J. Anim. Feed Sci. 2002;11(1):39–45
Publication date: 2002-01-31
KEYWORDS
ABSTRACT
Associations of milk production traits with growth hormone (L/V) and K-casein (A/B) gene polymorphisms were investigated in this study. Official breeding values of genotyped 99 A l bulls for milk, protein, fat yields as well as fat and protein contents were used to study genotype effects on the production traits. Effects of four single-locus genotypes (LL, LV, AA and AB) and four two-loci genotypes (AALL, AALV, ABLL and ABLV) were estimated. The AB genotype showed an advantage over the AA homozygote in terms of fat and protein contents. No significant relationships between the GH polymorphism and the breeding values were found. The analysis of the effect of two-loci genotype reflected the relationships observed for single-locus analysis and ABLL and ABLV genotypes were related to higher breeding values for fat (ABLV) and protein (ABLV and ABLL) contents. The contradictory effects of the studied genetic variants are discussed.
CORRESPONDING AUTHOR
M. Świtoński
August Cieszkowski Agricultural University of Poznań, Department of Genetics and Animal Breeding, Wołyńska 33, 60-637 Poznań, Poland
 
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ISSN:1230-1388