Association between polymorphism in STAT5A gene and milk production traits in Chinese Holstein cattle
Journal Title: Animal Science Papers and Reports - Year 2010, Vol 28, Issue 1
Abstract
STAT5 is a key intracellular mediator of prolactin signaling and can activate transcription of milk proteins in response to prolactin. STAT5 genes are suggested to be candidate markers for milk protein yield and composition in dairy cattle. PCR-SSCP was applied to analyze the polymorphisms of two loci in STAT5A gene in 279 Chinese Holstein cattle. Genotype frequencies, allele frequencies and correlation coefficients between the polymorphic variants and milk production traits were estimated. Three genotypes were found at the two loci. At locus P1 the frequencies of genotypes AA/GG/AG were 0.240/0.147/0.613 and those of alleles A and G were 0.547 and 0.453, respectively. The A/G genotypes had significant effect on milk yield and milk protein content in lactations 1 and 2. At locus P2 the genotype frequencies of CC/TT/CT were 0.752/0.004/0.244 and C and T allele frequencies were 0.875 and 0.125, respectively. Different genotypes had remarkable effect on the milk protein content in lactation 2.
Authors and Affiliations
Bin Bao, Chunlei Zhang, Runfeng Zhang, Chuanwen Gu, Chuzhao Lei, Hong Chen
Keywords
Related Articles
- EP ID EP71352
- DOI -
- Views 148
- Downloads 0
The effect of breed and the feeding system on the activity of glycosidases in cow’s milk
The aim of the study was to estimate the influence of the breeding and feeding system on the glycosidase activities in the cow’s milk. Experiment was carried out on three breed milking cow. Cows were divided into two gr...
In vitro screening of immunomodulatory properties of synbiotics in chicken DT40 cell line
Synbiotics (prebiotic & probiotic) are used to stimulate the proper composition of the intestinal microflora in farm animals. One of the desired properties of synbiotics is connected with the immunostimulatory potential...
Effect of mutation in MC4R gene on carcass quality in Pulawska pig included in conservation breeding programme
In addition to highly productive breeds of pigs, Polish breeders keep local pigs subject to the conservation programme including Pulawska (P) pig. Analysis of records spanning 20 years showed that lean...
Quality indicators of broiler breast meat in relation to colour
The aim of the study was to investigate the relationship between colour, final pH and drip loss and to determine the incidence of PSE and DFD meat in Cobb 500 and Hubbard Classic broiler chickens. The carcass weight, bre...
Can satisfaction of the rider be predicted from a behavioural test of horses
It may be assumed that the satisfaction from horse riding ultimately results in positive feelings for the mount and stimulates motivation for supplying high standards of welfare to the horse. The aim of the present study...