Differences on milk and fat yield between purebred and grade Holstein cows in Minas Gerais, Brazil;Diferenças entre produções de leite e de gordura de vacas PC e PO da raça Holandesa no Estado de Minas Gerais

Arquivo Brasileiro de Medicina Veterinaria e Zootecnia

Volumn 53, Issue 6, 2001, Pages 701-707

  Duraes M C ^a   Valente, J ^a   Freitas, A F ^a   Teixeira, N M ^a   Barra, R B ^b  

^a EMBRAPA CERRADOS   (Brazil)

^b Associação de Criadores de Gado Holandês de Minas Gerais   (Brazil)

Author keywords

Dairy cattle; Genetic trend; Holstein

Indexed keywords

EID: 24344431654     PISSN: 01020935     EISSN: None     Source Type: Journal    
DOI: 10.1590/s0102-09352001000600016     Document Type: Article

References (7)

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2. DURÃES, M.C., KEOWN, J.F. Age-month factors. Mature equivalent factors for three yield traits for non-registered and registered cattle. Rev. Bras. Genet., 14, p.713-728, 1991.
3. NORMAN, H.D., POWELL, R.L. Use of grade animals in United States Department of Agriculture programs. J. Dairy Sci., v. 66, p. 1567-1578, 1983.
4. POWELL, R.L., NORMAN, H.D. Genetic and environmental differences between registered and grade Holstein cows. J. Dairy Sci., v. 69, p. 2897-2907, 1986.
5. SASAKI, O., TOGASHI, K., YOKOUCHI, K. et al. Analysis of annual genetic gain in milk yield in a dairy herd. Res. Bull. Hokkaido Agric. Exp. Sta., v.58, p.21-30, 1993.
6. SIGURDSSON, A., ARNASON, R. Predicting genetic trend by uni- and multrait models. Acta Agr. Scand, v.45, p.1-10, 1995.
7. TEIXEIRA, N. M., FREITAS, A.F., RIBAS, N.P. et al. Tendências genéticas em rebanhos da raça Holandesa no Estado do Paraná. I. Produção de leite. Rev. Soc. Bras. Zootec., v.23, p.983-991, 1994.