Degree of connectedness among groups of centrally tested beef bulls

Canadian Journal of Animal Science

Volumn 84, Issue 1, 2004, Pages 37-47

  Roso, V M ^a,b   Schenkel, F S ^a   Miller, S P ^a  

^a UNIVERSITY OF GUELPH   (Canada)

^b GenSys Consultores Associados S/C Ltda   (Brazil)

Author keywords

Accuracy; Central test; Genetic evaluation; Harmonic mean

Indexed keywords

ANIMALIA;

EID: 2942640552     PISSN: 00083984     EISSN: None     Source Type: Journal    
DOI: 10.4141/A02-094     Document Type: Article

References (13)

1. Foulley, J. L., Hanocq, E. and Boichard, D. 1992. A criterion for measuring the degree of connectedness in linear models of genetic evaluation. Gen. Sel. Evol. 24: 315-330.
2. Fries, L. A., 1998. Connectability in beef cattle genetic evaluation: the heuristic approach used in MILC.FOR. Proc. 6th World Cong. Genet. Appl. Livest. Prod., Armidale, NSW, Australia. 27: 449-500.
3. Groeneveld, E. 1990. PEST user's manual. Institute of Animal Husbandry and Animal Behaviour, Federal Agricultural Research Centre, Germany.
4. Hanocq, E. and Boichard, D. 1999. Connectedness in the French Holstein cattle population. Gen. Sci. Evol. 31: 163-176.
5. Kennedy, B.W. and Trus, D. 1993. Considerations on genetic connectedness between management units under an animal model. J. Anim. Sci. 71: 2341-2352.
6. Laloë, D. 1993. Precision and information in linear models of genetic evaluation. Gen. Sel. Evol. 25: 557-576.
7. Mathur, P. K., Sullivan, B. P. and Chesnais, J. P. 1999. Estimation of the degree of connectedness between herds or management groups in the Canadian swine population. Canadian Centre for Swine Improvement, Otawa, ON. (Mimeo).
8. Mathur, P. K., Sullivan, B. P. and Chesnais, J. P. 2002. Measuring connectedness: concept and application to a large industry program. Proc. 7th World Cong. Genet. Appl. Livest. Prod., Montpelier, France. Communication No. 20-13.
9. Meyer, K. 1989. Approximate accuracy of genetic evaluation under an animal model. Livest. Prod. Sci. 21: 87-100.
10. Misztal, I. and Wiggans, G. R. 1988. Approximation of prediction error variance in large-scale animal models. J. Dairy Sci. 71(Suppl. 2): 27 (Abstr.).
11. SAS Institute, Inc. 1990. SAS/STAT user's guide (Version 6). SAS Institute, Inc., Cary, NC.
12. Sullivan, P. G., Wilton, J. W., Miller, S. P. and Banks, L. R. 1999. Genetic trends and breed overlap derived from multiple-breed genetic evaluation of beef cattle for growth traits. J. Anim. Sci. 77: 2019-2027.
13. Wood, C. M., Christian, L. L. and Rothschild, M. F. 1991. Evaluation of performance-tested boars using single-trait animal model. J. Anim. Sci. 69: 3144-3155.