HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Marziali, A. S. Articles by Ng-Kwai-Hang, K. F. Search for Related Content PubMed Articles by Marziali, A. S. Articles by Ng-Kwai-Hang, K. F.

Effects of Milk Composition and Genetic Polymorphism on Coagulation Properties of Milk

Department of Animal Science, Macdonald College of McGill University, 21,111 Lakeshore Road, Ste. Anne-de-Bellevue, Quebec, Canada H9X 1CO

ABSTRACT

Milk samples from 31 Holstein cows of different phenotypes for ß-casein, -casein, and ß-lactoglobulin were collected monthly over the entire lactation. These samples were analyzed for total solids, fat, protein, casein fractions, lactose, urea, citric acid, somatic cell count, and pH. Rennet clotting time, rate of firming, and curd firmness as measured by a Formagraph were not significantly influenced by phenotypes for ß-casein and -casein. Phenotype AA for ß-lactoglobulin gave the best clotting time (3.91 min) and firmness of curd (36.30 mm) when compared with AB and BB phenotypes. Relative percentages of the different caseins and -lactalbumin affected significantly rate of firming and curd firmness at cutting. Amount of -casein in milk was the most significant factor that affected curd firmness with a coefficient of regression of 15.96.

This article has been cited by other articles:

				A. Comin, M. Cassandro, S. Chessa, M. Ojala, R. Dal Zotto, M. De Marchi, P. Carnier, L. Gallo, G. Pagnacco, and G. Bittante Effects of Composite {beta}- and {kappa}-Casein Genotypes on Milk Coagulation, Quality, and Yield Traits in Italian Holstein Cows J Dairy Sci, October 1, 2008; 91(10): 4022 - 4027. [Abstract] [Full Text] [PDF]

				A. F. Keating, P. Davoren, T. J. Smith, R. P. Ross, and M. T. Cairns Bovine {kappa}-Casein Gene Promoter Haplotypes with Potential Implications for Milk Protein Expression J Dairy Sci, September 1, 2007; 90(9): 4092 - 4099. [Abstract] [Full Text] [PDF]

				T. Ikonen, S. Morri, A.-M. Tyriseva, O. Ruottinen, and M. Ojala Genetic and Phenotypic Correlations Between Milk Coagulation Properties, Milk Production Traits, Somatic Cell Count, Casein Content, and pH of Milk J Dairy Sci, February 1, 2004; 87(2): 458 - 467. [Abstract] [Full Text] [PDF]