title: The influence of casein haplotype on quality, coagulation, and yield traits of milk from Italian Holstein cows.
abstract: The aim of this work was to investigate the effect of casein haplotype (CSN1S1, CSN2, and CSN3) on quality, coagulation, and yield traits of milk from Italian Holstein cows. The casein haplotype was determined by isoelectric focusing; milk clotting properties were determined by using a mechanical lacto-dynamographic instrument; and the yields of pressed and pasta filata cheeses were expressed as kilograms of cheese per 100kg of milk processed. Statistical analysis showed a significant effect of the casein haplotype. In particular, BB-A(1)A(1)-AA milk showed the highest fat content (4.01g/100g), whereas BB-A(2)A(2)-BB milk had a higher protein content, the best coagulation characteristics, and the highest yields in pressed and pasta filata cheeses, and, consequently, better ability to retain fat and protein in the curd. The results of this study suggest that knowledge of milk protein polymorphisms not only allows the production of milk with specific qualitative and quantitative characteristics, but it could also be used as a specific marker within a breed to identify milk suitable for cheesemaking, which confers an economical advantage for dairy producers.
authors.affiliation: School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza, Viale dell'Ateneo Lucano 10-85100, Italy. Electronic address: anna.perna@unibas.it.
authors.forename: Annamaria
authors.initials: A
authors.lastname: Perna
authors.affiliation: School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza, Viale dell'Ateneo Lucano 10-85100, Italy.
authors.forename: Immacolata
authors.initials: I
authors.lastname: Intaglietta
authors.affiliation: School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza, Viale dell'Ateneo Lucano 10-85100, Italy.
authors.forename: Emilio
authors.initials: E
authors.lastname: Gambacorta
authors.affiliation: School of Agricultural, Forestry, Food and Environmental Sciences, University of Basilicata, Potenza, Viale dell'Ateneo Lucano 10-85100, Italy.
authors.forename: Amalia
authors.initials: A
authors.lastname: Simonetti
mesh_terms: D000818:Animals; D002364:Caseins / Q000378:metabolism*; D002417:Cattle; D005260:Female; D005838:Genotype; D006239:Haplotypes; D008892:Milk / Q000378:metabolism*; D008894:Milk Proteins / Q000378:metabolism
chemical_list: D002364:Caseins; D008894:Milk Proteins
keywords: Italian Holstein cows; casein haplotype; coagulation and yield traits; milk quality