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Abstract
Genetic variants of αs1-, β-, and κ-caseins and of β-lactoglobulin were studied with PAGE and isoelectric focusing in milk samples of 101 Hungarian Spotted and 120 Hungarian Grey cows. Gene frequencies and genotypic frequencies were estimated. Significant differences in gene frequencies between the two breeds were observed at the κ-casein and β-lactoglobulin locus. The variants β-casein C, κ-casein C, and β-lactoglobulin D were not found in Hungarian Grey cows. On immobilized pH gradient, isoelectric focusing gels containing carrier ampholytes, a new unidentified protein band appeared near β-lactoglobulin B in about 10% of the milk samples of Hungarian Grey cattle.
Key words
Abbreviation key:
CA-IEF (isoelectric focusing in the presence of carrier ampholytes), CA-IPG-IEF (isoelectric focusing in immobilized pH gradients in the presence of carrier ampholytes), CN (casein (used with αs1-, αs2-, β-, and κ-)), HG (Hungarian Grey), HS (Hungarian Spotted), LG (lactoglobulin (used with β-))References
Bodó, I. 1986. The Hungarian Grey cattle podolian breed. Page 287 in First Conv. Allev. Bov. Podolian Mezzog. Ital.
- The Hungarian Grey cattle in modem beef production.World Rev. Anim. Prod. 1987; XXIII: 69
- Nomenclature of proteins of cow's milk: fifth revision.J. Dairy Sci. 1984; 67: 1599
- Genetische Varianten der Milchproteine bei osterreichischem Fleckvieh.Österr. Milchwirtsch. Wiss. Beil. 1975; 30: 1
- Genfrequenzschätzung bei Michproteinen des bayerischen Fleckviehs.Zuechtungskunde. 1984; 56: 73
- Le polymorphisme génétique des principales Iactoprotéines bovines.Inst. Natl. Rech. Agron. Prod. Anim. 1988; 1: 5
- Mise en évidence de deuxvariants supplémentaires des protéines du lait devache: αs1-Cn D et Lg D.Ann. Biol. Anim. Biochim. Biophys. 1966; 6: 215
- Milk casein polymorphism in Hungarian Spotted cattle and ancestor breeds.Acta Vet. Acad. Sci. Hung. 1970; 20: 35
- Isoelectric focusing in immobilized pH gradients with carrier ampholytes added for high-resolution phenotyping of bovine β-lactoglobulins: characterization of a new genetic variant.Electrophoresis. 1988; 9: 609
- Chemical classification of cattle. 2. Phylogenetic tree and specific status of the Zebu.Anim. Blood Groups Biochem. Genet. 1980; 11: 151
- Genetische Caseinvarianten bei österreichischen Rinderrassen.Milchwirtsch. Berichte Wolfpassing. 1991; 108: 145
- Effects of milk protein genetic variants and composition on heat stability of milk.J. Dairy Res. 1987; 54: 219
- Milk protein typing of bovine mammary gland tissue used to generate a complementary deoxyribonucleic acid library.J. Dairy Sci. 1989; 72: 3190
- Effects of potassium dichromate and sample storage time on fat and protein by Milko-Scan and on protein and casein by a modified Pro-Milk Mk II method.J. Dairy Sci. 1982; 65: 1895
- Association of genetic variants of casein and milk serum proteins with milk, fat, and protein production by dairy cattle.J. Dairy Sci. 1984; 67: 835
- Association between genetic polymorphism of milk proteins and production traits during three lactations.J. Dairy Sci. 1990; 73: 3414
- Genotypen fur Milchprotein beim bayerischen Fleckvieh.Der Tierzüchter. 1991; 43: 479
- Effects of genetic variants of κ-casein and β-lactoglobulin on cheesemaking.I. Dairy Res. 1985; 52: 429
- Chemistry of milk protein.in: Developments in Dairy Chemistry. I. Elsevier Appl. Sci. Publ., Ltd., Barking, Essex, Engl1982: 1
Article info
Publication history
Accepted:
October 2,
1992
Received:
May 26,
1992
Identification
Copyright
© 1993 American Dairy Science Association. Published by Elsevier Inc.
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