Genetic parameters for testes size and growth in Nellore bulls

Arquivo Brasileiro de Medicina Veterinaria e Zootecnia

Volumn 48, Issue 1, 1996, Pages 69-78

  Bergmann, J A G ^a   Zamborlini, L C ^b   Procopio C S O ^b   Andrade, V J ^a   Vale Filho, V R ^b  

^a FEDERAL UNIVERSITY OF MINAS GERAIS   (Brazil)

^b NONE

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0030493096     PISSN: 01020935     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (15)

1. BERGMANN, J.A.G., TORRES, J.R., PEREIRA, C.S. et al. Efeitos de meio sobre características ponderais de animais Nelore. Arq. Bras. Med. Vet. Zoot. v.35, p.255-281, 1983.
2. BOURDON, J. S., BRINKS, J. S. Scrotal circumference in yearling Hereford bulls: Adjustment factors, heritabilities and genetic, environmental and phenotypic relationships with growth traits. J. Anim. Sci., V.62, p.958-967, 1986.
3. COULTER, G. H., ROUNSAVILLE, T. R., FOOTE, R. H. Heritability of testicular size and consistency in Holstein bulls. J. Anim. Sci., v.43, p.9-16, 1976.
4. KNIGHTS, S. A., BAKER, R. L., GIANOLA, D. et al. Estimates of heritabilities and of genetic and phenotypic correlations among growth and reproductive traits in yearling Angus bulls. J. Anim. Sci., v.58, p.887-893, 1984.
5. LATIMER, F. L., WILSON, L. L., CAIN, M. F. et al. Scrotal measurements in beef bulls: heritability estimates, breed and test station effects. J. Anim. Sci., v.54, p.473-479, 1982..
6. LÔBO, R B., REYES, A., FERRAZ, J.B.S. et al. Bivariate animal analysis of growth weights and scrotal circumference of Nellore cattle in Brazil. In: WORLD CONGRESS ON GENETICS APPLIED TO LIVESTOCK PRODUCTION, 5, 1994, Guelph, Canada. Proceedings...Guelph, Canada, 1994. p. 199-202.
7. MARTINS FILHO, R., LÔBO, R. B. Estimates of genetic correlations between sire scrotal circumference and offspring age at first calving in Nellore cattle (short communication). Rev. Bras. Genet, v.14, p.209-212, 1991.
8. MEYER, K. Restricted maximum likelihood to estimate variance components for animal models with several random effects using a derivative-free algorithm. Genet. Sel. Evol. v.21, p.317-340, 1989.
9. NEELY, J.D., JOHNSON, B.H, DILLARD, E.U. et al. Genetic parameters for testes size and sperm number in Hereford bulls. J. Anim. Sci., v.55, p. 1033-1040, 1982.
10. NELSEN, T.C., SHORT, R.E., URICK, J.J. et al. Heritabilities and genetic correlations of growth and reproductive measurements in Hereford bulls. J. Anim. Sci., v.63, p.409-417, 1986.
11. NOTTER, D.R. Evaluating and reporting reproductive traits. In: BEEF IMPROVEMENT FEDERATION, 1988, Albuquerque, NM, Proceedings... Albuquerque, NM, 1988. p.21-42.
12. NOTTER, D.R., McFADDEN, L.G., BERGMANN, J.A.G. Relationship between yearling scrotal circumference and measures of female reproduction in Angus Cattle. In: BEEF IMPROVEMENT FEDERATION, 25, 1993, Asheville, NC, Proceedings... Asheville, NC, 1993. p180-184.
13. SAS,. SAS-Stat User's Guide. SAS Inst., Inc., Cary, NC, 1990.
14. TOELLE V. D., ROBISON, W. Estimates of genetic correlations between testicular measurements and female reproductive traits in cattle. J. Anim. Sci.,v.60, p.89-100, 1985
15. VALE FILHO, V.R., FONSECA, V.O., FRENEAU, G.E. et al. Desenvolvimento testicular e maturação sexual em bovinos. Cadernos Técnicos da Escola de Veterinária da UFMG, v.8, p.71-86, 1993.