+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Effect of the kappa-casein gene polymorphism, breed and seasonality on physicochemical characteristics, composition and stability of bovine milk



Effect of the kappa-casein gene polymorphism, breed and seasonality on physicochemical characteristics, composition and stability of bovine milk



Revista Brasileira de Zootecnia-Brazilian Journal of Animal Science 38(12): 2447-2454



The objective of this study was to evaluate the effect of genetic polymorphism of kappa-casein, breed and seasonality on the physicochemical characteristics, composition and stability of milk in commercial dairy herds. A total of 879 milk and blood samples were collected from 603 Holstein and 276 Girolando cows, obtained during rainy and dry seasons. Milk samples were analyzed to determine the physicochemical characteristics, composition and ethanol stability, while blood samples were subjected to polymerase chain reaction to identify the kappa-casein genotype. The frequencies of genotypes AA, AB and BB of k-casein were respectively, 66.83, 31.84 and 1.33% for Holstein, and 71.38, 27.90 and 0.72% for the Girolando cows, respectively. The A allele was more frequent than the B allele, both for Holstein (0.827 and 0.173) and Girolando cows (0.853 and 0.147), respectively. Cows of AB and BB genotypes showed a higher milk fat content compared to the AA genotype. There was an interaction between breed and seasonality on the concentration of milk urea with higher values for Holstein and Girolando cows in the rainy and dry season, respectively. The levels of lactose, total solids, crude protein, true protein, casein and the casein: true protein ratio were higher during the dry season, while during the rainy season, the somatic cell count and milk urea concentration were higher. There was no association between milk stability and k-casein genotypes, but Holstein cows showed higher milk stability than Girolando cows, and milk was more stable during the rainy season than during the dry season.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066228408

Download citation: RISBibTeXText

DOI: 10.1590/S1516-35982009001200022


Related references

Effect of a differential allelic expression of kappa-casein gene on ethanol stability of bovine milk. Journal of Dairy Research 68(1): 145-149, 2001

Bovine kappa-casein gene polymorphism and its association with milk production traits. Genetics and Molecular Biology 31(4): 893-897, 2008

Genetic polymorphism and association of kappa-casein gene with milk production traits among Frieswal (HF × Sahiwal) cross breed of Indian origin. Iranian Journal of Veterinary Research 15(4): 406-408, 2014

Influence of composite kappa-casein and beta-lactoglobulin genotypes on composition, rennetability and heat stability of milk of cows of Slovak Pied breed. Czech Journal of Animal Science 52(9): 292-298, 2007

Associations between polymorphism within regulatory and coding fragments of bovine kappa-casein gene and milk performance traits. Journal of Animal and Feed Sciences 9(3): 435-446, 2000

Effect of kappa-casein polymorphism on milk composition in the Orobica goat. Journal of Dairy Science 90(4): 1962-1966, 2007

Study on ewes milk casein part 2 determination of some chemical and physicochemical characteristics of s carboxyamido methylated kappa casein. Zhivotnov"dni Nauki 12(5): 91-95, 1975

Effect of the three casein haplotypes ( alpha s1, beta and kappa ) occurring most frequently in the Normande breed on milk composition and suitability for cheesemaking. Lait 77(5): 625-639, 1997

Effect of beta-lactoglobulin polymorphism and seasonality on bovine milk composition. Journal of Dairy Research 75(2): 176-181, 2008

Effect of beta-lactoglobulin and kappa-casein genes polymorphism on milk composition in indigenous Zel sheep. Archiv Fur Tierzucht-Archives of Animal Breeding 56: 216-224, 2013

Studies on kappa casein of bovine milk part 6 reduced components and the alpha s casein stabilizing ability of succinylated kappa casein. Scientific Reports of the Kyoto Prefectural University Agriculture (23): 155-162, 1971

Studies on kappa -casein of bovine milk. VI. Reduced components and the alpha s-casein stabilizing ability of succinylated kappa -casein. Scientific Reports of the Kyoto Prefectural University, Agriculture 23: 155-162, 1971

Polymorphism of the kappa-casein gene of different cattle populations of the Black-Motley breed. Proceedings Of The National Academy Of Sciences Of Belarus, Agrarian Series: 71-75, 2008

Analysis of selection effect based on kappa casein gene on milk yield production of Iranian Sarabi cattle breed using stochastic simulation. Pakistan Journal of Biological Sciences 10(6): 941-945, 2009

Effect of bovine milk kappa-casein genetic polymorphs on curd characteristics during cheddar cheese manufacture. Journal of Food Science & Technology 40(6): 582-586, 2003