Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-24T06:24:25.362Z Has data issue: false hasContentIssue false
  • English
  • Français

Milk protein polymorphism in Danish dairy cattle and the influence of genetic variants on milk yield

Published online by Cambridge University Press:  01 June 2009

Anne-Marie Bech  and
K. Rotvig Kristiansen
Anne-Marie Bech
Affiliation:
The Danish Government Research Institute for Dairy Industry, DK-3400 Hillerød, Denmark
K. Rotvig Kristiansen
Affiliation:
The Danish Government Research Institute for Dairy Industry, DK-3400 Hillerød, Denmark
Get access Rights & Permissions [Opens in a new window]

Summary

In milk samples from 549 cows of the breeds Danish Jersey, Red Danish Dairy Cattle (RDM), and Black and White Danish Dairy Cattle (SDM) the genetic polymorphisms of the αs1, β and K-cascin and β-lactoglobulin (β-Lg) loci were determined by isoelectric focusing in agarose gels. The results of the screening were comparcd with results obtained by Larsen & Thymann (1966). In addition, the genetic linkage of the three casein loci was studied, and the association between milk protein genotypes and yields in first and second lactations of milk, fat and protein were investigated.

The distribution of genotypes of all four milk protein Systems was different from breed to breed.

For Jersey cows, significant differences in the gene frequencies from the results of the 1966 investigation were found for αs1 and K-casein and β-Lg. For SDM cows a change in the K-casein frequency had occurred whereas for RDM cows no changes were found.

Linkage between some of the casein loci was found within ail three breeds. For the RDM breed the possible linkage between αs1-casein and the other caseins could not be tested bccause nearly ail thc cows were homozygous for the αs1-cascin-B genotypes.

β-Casein genotypes were associated with yield parameters in ail breeds. The A2A2 genotype of this protein gave higher yields of milk, fat, and protein in the second lactation than thc A1A1 genotype.

Type
Original Articles
Information
Journal of Dairy Research , Volume 57 , Issue 1 , February 1990 , pp. 53 - 62
Copyright
Copyright © Proprietors of Journal of Dairy Research 1990

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Aschaffenburg, R. 1968 Geiietic variants of milk proteins: their breed distribution. Journal of Dairy Research 35 447–460CrossRefGoogle Scholar
Bech, A.-M. & Munk, K. S. 1988 Studies on bovine milk protein polymorphism by electrofoeusing in agarose gels containing 7 M urea. Milchwissenschaft 43 230–232Google Scholar
Farrell, H. M. Jr., Thompson, M. P. & Larsen, B. 1971 Verification of the occurrence of the αsl-casein A allele in Red Danish cattle. Journal of Dairy Science. 54 423–425CrossRefGoogle Scholar
Feaoan, J. T., Bailey, L. F., Hehir, A. F., McLean, D. M. & Ellis, N. J. S. 1972 Coagulation of milk proteins. I. Effect of genetic variants of milk proteins on rennet coagulation and heat stability of normal milk. Australian Journal of Dairy Technology 27 129–134Google Scholar
Grosclaude, F., Mercier, J. G. & Ribadeau Dumas, B. 1973 Genetic aspects of cattle casein research. Netherlands Milk and Dairy Journal 27 328–340Google Scholar
Hayes, J. F., Ng-Kwai-Hano, K. F. & Moxiey, J. E. 1984 Heritability of milk casein and genetic and phenotypic correlations with production traits. Journal of Dairy Science 67 841–846CrossRefGoogle ScholarPubMed
King, J. W. B., Asochaffenburg, R., Kiddy, C. A. & Thompson, M. P. 1965 Non-independent occurrence of αs1 and β-casein variants of cow's milk. Nature 206 324–325CrossRefGoogle Scholar
Larsen, B. & Thymann, M. 1966 Studies on milk protein polymorphism in Danish cattle and the interaction of the controlling genes. Acta Veterinaria Scandinavica 7 189–205CrossRefGoogle ScholarPubMed
Mclean, D. M., Graham, E. R. B., Ponzoni, R. W. & Mckenzie, H. A. 1984 Effects of milk protein genetie variants on milk yield and composition. Journal of Dairy Research 51 531–546CrossRefGoogle Scholar
Mariani, P., Losi, G., Russo, V., Castagnetti, G. B., Grazia, L., Morini, D. & Fossa, E. 1970 [Cheesemaking tests made with milk characterized by variants A and li of K-casein in the production of Parmigiano-Reggiano cheese.] Scienza e Tecnica Lattiero-Casearia 27 208–227Google Scholar
Ng-Kwai-Hang, K. F., Hayes, J. F., Moxley, J. E. & Monardes, H. G. 1984 Association of genetic variants of casein and milk serum proteins with milk, fat, and protein production by dairy cattle. Journal of Dairy Science 67 835–840CrossRefGoogle ScholarPubMed
Sas Institute INC. 1982 SAS User's Guide: Statistics. Cary NC: SAS Institute Inc.Google Scholar
Schaar, J. 1981 Casein stability and cheesemaking properties of milk: effectsof handling, mastitis and genetic variation. Department of Animal Breeding and Genetics, Swedish University of Agricultural Sciences, Report 52Google Scholar
Schaar, J. 1984 Effects of K-casein genetic variants and lactation number on the renneting properties of individual milks. Journal of Dairy Research 51 397–406CrossRefGoogle Scholar
Schaar, J., Hansson, B. & Pettersson, H.-E. 1985 Effects of genetic variants of K-casein and βlactoglobulin on cheesemaking. Journal of Dairy Research 52 429–437CrossRefGoogle Scholar