Title:	Genetic polymorphism of the kappa-casein gene in Brazilian cattle.
Authors:	AZEVEDO, A. L. S. NASCIMENTO, C. S. STEINBERG, R. S. CARVALHO, M. R. S. PEIXOTO, M. G. C. D. TEODORO, R. L. VERNEQUE, R. S. GUIMARÃES, S. E. F. MACHADO, M. A.
Affiliation:	Ana Luísa Sousa Azevedo, Embrapa Gado de Leite / UFV; C. S. Nascimento, UFV; R. S. Steinberg, UFMG; Maria Raquel Santos Carvalho, UFMG; Maria Gabriela Campolina Diniz Peixoto, Embrapa Gado de Leite; Roberto Luiz Teodoro, Embrapa Gado de Leite; Rui da Silva Verneque, Embrapa Gado de Leite; S. E. F. Guimarães, UFV; Marco Antônio Machado, Embrapa Gado de Leite.
Date Issued:	2008
Citation:	Genetics and Molecular Research, Ribeirão Preto, v. 7, n. 3, p. 623-630, 2008.
Description:	Frequencies of kappa-casein gene alleles were determined in 1316 animals from the Brazilian Bos indicus genetic groups (Sindhi cows, Gyr sires, Gyr cows, Guzerat sires, Guzerat cows, Nellore sires, and Gyr x Holstein crossbreds) by means of polymerase chain reaction-restriction fragment length polymorphism analysis using two independent restriction nucleases (Hinf I and HaeIII). The genotyping of kappa-casein alleles (A and B) is of practical importance, since the B allele is found to correlate with commercially valuable parameters of cheese yielding efficiency. The frequencies of the B allele of kappa-casein among breeds ranged from 0.01 to 0.30. The Sindhi breed had the highest frequency for the B allele (0.30), while the frequencies of this allele in other breeds ranged from 0.01 to 0.18. A wide variation in the B allele frequency among B. indicus breeds was found suggesting that molecular selection for animals carrying the B allele could impact breeding programs for dairy production.
NAL Thesaurus:	casein
Keywords:	Zebu cattle Candidate genes k-casein Molecular markers
DOI:	https://doi.org/10.4238/vol7-3gmr428
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPGL)