K-Casein, B-Lactoglobulin and growth hormone allele frequencies and genetic distances in Nelore, Gyr, Guzará, Caracu Charolais Canchim and Santa Gertrudis cattle.

The genotypes for x-casein (x-CN), p-lactoglobulin -LG) and growth hormone (GH) were determined by polymerase chain reaction (PCR) and restriction enzyme digestion in seven breeds of cattle (Nelore, Gyr, Guzera, Caracu, Charolais, Canchim and Santa Gertrudis). k-Casein had two alleles with the A allele occurring at a higher frequency in Bos indicus breeds (0.93, 0.92 and 0.91% for Gyr, Guzera and Nelore, respectively). The p-lactoglobulin locus had two alleles in all of the breeds. European breeds had a higher frequency of the p-LG A allele than Zebu breeds. The GH locus had two alleles (L and V) in Bos taurus and was monomorphic (L allele only) in all of the Bos indicus breeds evaluated. The highest frequency for the V allele was observed in Charolais cattle. The markers used revealed a considerable similarity among breeds, with two main groups being discernible. One group consisted of Zebu and Santa Gertrudis breeds and the other consisted of European and Canchim breeds.

Bibliographic Details

Main Authors:	KEMENES, P. A., REGITANO, L. C. de A., ROSA, A. J. de, PACKER, I. U., RAZOOK, A. G., FIGUEIREDO, L. A. de, SILVA, N. A., ETCHEGARAY, M. A. L., COUTINHO, L. L.
Other Authors:	PAOLA AUGUSTA KEMENES, Agroceres PIC; LUCIANA CORREIA DE ALMEIDA REGITANO, CPPSE; ARTUR JORDÃO DE MAGALHÃES ROSA, USP-FMRP; IRINEU UMBERTO PACKER, ESALQ/USP, PIRACICABA, SP.; ALEXANDER GEORGE RAZOOK, IZ, SERTÃOZINHO, SP.; LEOPOLDO ANDRADE DE FIGUEIREDO, IZ, SERTÃOZINHO, SP.; NIRLEI APARECIDA DA SILVA, ESALQ/USP, PIRACICABA, SP.; MARIA ANTONIA L. ETCHEGARAY, ESALQ/USP, PIRACICABA, SP.; LUIZ LEHMANN COUTINHO, ESALQ/USP, PIRACICABA, SP.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2000-03-01
Subjects:	k-casein, b-lactoglobulin, Hormonio de crescimento, Growth hormone, Allele frequencies, Gado Canchim, beef cattle,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/44694
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