Milk protein genes CSN1S1, CSN2, CSN3, LGB and their relation to genetic values of milk production parameters in Czech Fleckvieh

Get it

Genotypes of milk protein genes, alphaS1-casein (CSN1S1), beta-casein (CSN2), kappa-casein (CSN3) and beta-lactoglobulin (LGB), were detected in 440 individuals of Czech Fleckvieh breed using a PCR-RFLP method. Breeding values of genotyped animals were obtained from the Official Database of Progeny Testing. A granddaughter design including 5 grandsires, 33 sons and 402 granddaughters was used for evaluation. Statistical analysis was carried out in SAS program using a restricted maximum likelihood method (REML). The aim of this study was to determine allele and genotype frequencies of observed genes and to find the relation between genotypes of genes and milk production parameters expressed by the breeding values of animals. The positive findings of frequencies of CSN3 allele B (0.38) and genotype BB (13%) were detected in the observed population. Significant differences were found between genotypes of loci CSN1S1, CSN2 and CSN3 and breeding values for milk production parameters. Genotypes of LGB locus were not significantly related to any of the milk production parameters. Significant effects were found between CSN1S1 locus and average breeding value for milk yield, CSN2 locus and breeding values for all parameters except for protein content and CSN3 locus and breeding values for protein content and protein yield. These findings contribute to a better understanding of the genetic constitution of Czech Fleckvieh breed and help with the application of the information to breeding. … full description

Bibliographic Details

Other Authors

Jitka Kučerová, A. Matějíček, Olga Jandurová, 1948- , P. Sørensen, Eva Němcová, Miloslava Štípková, Tomáš Kott, Josef Bouška, 1944- , Jan Frelich, 1941-

Document Type

Articles

Physical Description

3 il.

Published in

Czech Journal of Animal Science. -- ISSN 1212-1819. -- Roč. 51, č. 6 (2006), s. 241-247

Subjects

skot

plemena zvířat

genotypy

geny

kasein

kazeín

beta-laktoglobulin

mléčná užitkovost

CATTLE

BREEDS (ANIMALS)

GENOTYPES

GENES

MILK PROTEIN

CASEIN

BETA LACTOGLOBULIN

MILK PERFORMANCE

skot český strakatý

more… less…

Item Description

tab.

Bibliography

Bibliografie na s. 246-247