The aim of this work was to study the effects of isoelectrofocusing (IEF) milk protein variants on milk composition in the Italian Orobica goat breed, which is characterized by a rather high frequency of the kappa-casein (CSN3) B-IEF allele. Significant associations were found between the IEF phenotype and protein and casein percentages. A favorable effect of the CSN3 B-IEF variant was found for both protein and casein percentages, with a codominance trend for the 3 phenotypes: BB > AB > AA. Depending on the selection purpose, emphasis could be given to different kappa-casein variants in breeding.The high frequency of B-IEF could be exploited in breeding strategies to improve the protein and casein percentages when cheese making is a selection objective.
EFFECT OF k-CASEIN POLYMORPHISM ON MILK COMPOSITION IN OROBICA GOAT
CAROLI, Anna Maria;
2007-01-01
Abstract
The aim of this work was to study the effects of isoelectrofocusing (IEF) milk protein variants on milk composition in the Italian Orobica goat breed, which is characterized by a rather high frequency of the kappa-casein (CSN3) B-IEF allele. Significant associations were found between the IEF phenotype and protein and casein percentages. A favorable effect of the CSN3 B-IEF variant was found for both protein and casein percentages, with a codominance trend for the 3 phenotypes: BB > AB > AA. Depending on the selection purpose, emphasis could be given to different kappa-casein variants in breeding.The high frequency of B-IEF could be exploited in breeding strategies to improve the protein and casein percentages when cheese making is a selection objective.| File | Dimensione | Formato | |
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