Estimates of genetic parameters for ultrasound-measured carcass traits in sheep

Canadian Journal of Animal Science

Volumn 84, Issue 3, 2004, Pages 361-365

  Fernandes, T L ^a   Wilton, J W ^a   Tosh, J J ^a  

^a UNIVERSITY OF GUELPH   (Canada)

Author keywords

Genetic parameters; Heritability; Sheep; Ultrasound

Indexed keywords

ANIMALIA; LAMB; OVIS ARIES;

EID: 9944250092     PISSN: 00083984     EISSN: None     Source Type: Journal    
DOI: 10.4141/A03-080     Document Type: Article

References (24)

1. Bennett, G. L., Johnson, D. L., Kirton, A. H. and Cater, A. H. 1991. Genetic and environmental effects on carcass characteristics of Southdown x Romney lambs: II. Genetic and phenotypic variation. J. Anim. Sci. 69: 1864-1874.
2. Bradford, E. and Spurlock, G. M. 1972. Selection for meat production in sheep - results of a progeny test. J. Anim. Sci. 34: 737-745.
3. Cameron, N. D. and Bracken, J. 1992. Selection for carcass lean content in a terminal sire breed of sheep. Anim. Prod. 54: 367-377.
4. Cotterill, P. P. and Roberts, E. M. 1976. Preliminary heritability estimates of some lamb carcass traits. Proc. Aust.Soc. Anim. Prod. 11: 53-56.
5. Falconer, D. S. 1989. Introduction to quantitative genetics. 3rd ed. Longman Scientific and Technical, London, UK.
6. Fernandes, T. L. 2000. Genetic parameter estimates for ultrasound-measured carcass traits in sheep. M.Sc. Thesis. University of Guelph, Guelph, ON.
7. Fogarty, N. M. 1995. Genetic parameters for live weight, fat and muscle measurements, wool production and reproduction in sheep: a review. Anim. Breed. Abstr. 3: 102-143.
8. Groeneveld, E. 1998a. PEST user's manual. Federal Agricultural Research Centre, Hoeltystr, Germany.
9. Groeneveld, E. 1998b. VCE4 user's guide and reference manual. Version 1.1. Federal Agricultural Research Centre, Hoeltystr, Germany.
10. Kennedy, D. K. 1999. Mimeograph - Ontario Sheep - Genetic Trends. Ontario Ministry of Agriculture, Food and Rural Affairs, Guelph, ON.
11. Roots, K. R., Gobson, J. P. and Wilton, J. W. 1994. Analyses of published genetic parameter estimates for beef production traits. 1. Heritability. Anim. Breed. Abstr. 62: 309-338.
12. Mercer, J. T., Brotherstone, S., Bradfield, M. J. and Guy, D. R. 1994. Estimation of genetic parameters for use in sheep sire reference schemes. Proc. 5th Wld. Congr. Genet. Appl. Livest. Prod. 18: 39-12.
13. Pollot, G. E., Guy, D. R. and Croston, C. 1994. Genetic parameters of lamb carcasses at three end-points: fat level, age and weight. Anim. Prod. 58: 65-75.
14. Reverter, A. and Kaiser, C. J. 1997. The role of different pedigree structures on the sampling variance of heritability estimates. J. Anim. Sci. 75: 2355-2361.
15. SAS Institute, Inc. 1992. SAS user's guide: Statistics. SAS Institute, Inc., Cary, NC.
16. Statistics Canada. 2003. Sheep Statistics II. 1: 1-16.
17. Sheep News. 1998. Market trends. 12: 12-14.
18. Thorsteinsson, S. S. and Bjornsson, H. 1982. Genetic studies on carcass traits in Iceland twin ram lambs. I. Estimates of genetic parameters on carcass traits, live weight at weaning and carcass weight. Livest. Prod. Sci. 8: 489-505.
19. Tosh, J. J. 2000. Mimeograph -Estimates of heritability for growth traits in Ontario sheep. University of Guelph, Department of Animal and Poultry Science, Guelph, ON.
20. Waldron, D. R., Clarke, J. N., Rae, A. L., Kirton, A. H. and Bennett, G. L. 1992. Genetic and phenotypic parameter estimates for selection to improve lamb carcass traits. N. Z. J. Agric. Res. 35: 287-298.
21. Wilson, D. E. 1992. Application of ultrasound for genetic improvement. J. Anim. Sci. 70: 973-983.
22. Wilton, J. W. and Goddard, M. E. 1996. Selection for carcass and feedlot traits considering alternative slaughter end points and optimized management. J. Anim. Sci. 74: 37-45.
23. Wolf, B. T., Smith, C., King, J. W. B. and Nicholson, D. 1981. Genetic parameters of growth and carcass composition in cross-bred lambs. Anim. Prod. 32: 1-7.
24. Young, M. J. and Simm, G. 1990. Genetic parameters for in vivo body measurements in Suffolk. Proc. N. Z. Soc. Anim. Prod. 50: 403-406.