Additive genetic relationships between heifer pregnancy and scrotal circumference in hereford cattle

Journal of Animal Science

Volumn 77, Issue 10, 1999, Pages 2621-2628

  Evans, J L ^a   Golden, B L ^a   Bourdon, R M ^a   Long, K L ^b  

^a Veterinary Dentistry and Oral Surgery   (United States)

^b Bell Ranch Seedstock Division   (United States)

Author keywords

Beef cattle; Genetic parameters; Heifers; Heritability; Pregnancy

Indexed keywords

BOS TAURUS; BOVINAE;

AGING; ANIMAL; ANIMAL HUSBANDRY; ARTICLE; BIOLOGICAL MODEL; BREEDING; CATTLE; FEMALE; FERTILITY; GENETICS; HISTOLOGY; MALE; PREGNANCY; SCROTUM;

AGING; ANIMAL HUSBANDRY; ANIMALS; CATTLE; FEMALE; FERTILITY; MALE; MODELS, BIOLOGICAL; PREGNANCY; PREGNANCY, ANIMAL; SCROTUM;

EID: 0033210983     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/1999.77102621x     Document Type: Article

References (36)

1. BIF. 1990. Guidelines for Uniform Beef Improvement Programs (6th Ed.). Beef Improvement Federation, Oklahoma State Univ., Stillwater.
2. Boik, R. J., M. W. Tess, and C. Todd. 1993. Technical note: Computing tests of fixed effects in a restricted class of mixed models. J. Anim. Sci. 71:51-56.
3. Brinks, J., M. J. McInerney, and P. J. Chenoweth. 1978. Relationship of age at puberty in heifers to reproductive traits in young bulls. Proc. West. Sect. Am. Soc. Anim. Sci. 29:28-30.
4. Buddenberg, B. J., C. J. Brown, Z. B. Johnson, J. E. Dunn, and H. P. Peterson. 1989. Heritability estimates of pregnancy rate in beef cows under natural mating. J. Anim. Sci. 67:2589-2594.
5. Cantet, R.J.C. 1994. Prediction and estimation with additive animal models for crosses originated in two populations. Proc. 5th World Congr. Genet. Appl. Livest. Prod. 18:390-393.
6. Coulter, G. H., and R. H. Foote. 1979. Bovine testicular measurements as indicators of reproductive performance and their relationship to productive traits in cattle: A review. Theriogenology 11:297-311.
7. Cundiff, L. V., K. E. Gregory, R. M. Koch, and G. E. Dickerson. 1986. Genetic diversity among cattle breeds and its use to increase beef production efficiency in a temperate environment. Proc. 3rd World Congr. Genet. Appl. Livest. Prod. 9:271-282.
8. Doyle, S. P., R. D. Green, B. L. Golden, G. L. Mathiews, C. R. Cornstock, and D. G. LeFever. 1996. Genetic parameter estimates for heifer pregnancy rate and subsequent rebreeding rate in Angus cattle. J. Anim. Svi. 74(Suppl. 1):117 (Abstr.).
9. Evans, J. L. 1996. Genetic parameter estimates of yearling heifer pregnancy and yearling bull scrotal circumference in Hereford cattle. M.S. thesis. Colorado State Univ., Fort Collins.
10. Gianola, D., and J. L. Foulley. 1983. Sire evaluation for ordered categorical data with a threshold model. Genet. Sel. Evol. 15:201-224.
11. Golden, B. L., W. M. Snelling, J. L. Evans, and C. R. Comstock. 1996. Reproduction: The next era of genetic evaluation. Proc. Beef Improvement Federation 28th Research Symposium and Annual Meeting, Birmingham, AL.
12. Golden, B. L., W. M. Snelling, and C. H. Mallinckrodt. 1992. Animal breeder's tool kit user's guide and reference manual. Agric. Exp. Stn. Tech. Bull. LTB92-2. Colorado State Univ., Fort Collins.
13. Gregory, K. E., L. V. Cundiff, and R. M. Koch. 1992. Breed effects and heterosis in advanced generations of composite populations for reproduction and maternal traits of beef cattle. J. Anim. Sci. 70:656-672.
14. Gregory, K. E., D. D. Lunstra, L. V. Cundiff, and R. M. Koch. 1991. Breed effects and heterosis in advanced generations of composite populations for puberty and scrotal traits of beef cattle. J. Anim. Sci. 69:2795-2807.
15. Harville, D. A., and R. W. Mee. 1984. A mixed-model procedure for analyzing ordered categorical data. Biometrics 40:393-408.
16. Henderson, C. R. 1975. Use of relationships among sires to increase accuracy of sire evaluation. J. Dairy Sci. 58:1731-1738.
17. Henderson, C. R. 1984. Applications of linear models in animal breeding. Univ. of Guelph, Guelph, ON, Canada.
18. Henderson, C. R., Jr. 1982. Analysis of covariance in the mixed model: Higher-level, nonhomogeneous, and random regressions. Biometrics 38:623-640.
19. Kaiser, C. J. 1996. Incorporating birth weight information into a calving ease threshold model analysis. Ph.D. dissertation. Colorado State Univ., Fort Collins.
20. Kaiser, C. J., and B. L. Golden. 1995. Modified equations for analysis of continuous and ordered categorical data with missing observations. Proc. West. Sect. Am. Soc. Anim. Sci. 46:209-212.
21. Koots, K. R., J. P. Gibson, C. Smith, and J. W. Wilton. 1994. Analyses of published genetic parameter estimates for beef production traits. 1. Heritability. Anim. Breed. Abstr. 62:309-338.
22. Lunstra, D. D., K. E. Gregory, and L. V. Cundiff. 1988. Heritability estimates and adjustment factors for the effects of bull age and age of dam on yearling testicular size in breeds of bulls. Theriogenology 30:127-136.
23. Mallinckrodt, C. H., B. L. Golden, and A. Reverter. 1997. Approximate confidence intervals for heritability from Method R estimates. J. Anim. Sci. 75:2041-2046.
24. Martin, L. C., J. S. Brinks, R. M. Bourdon, and L. V. Cundiff. 1992. Genetic effects on beef heifer puberty and subsequent reproduction. J. Anim. Sci. 70:4006-4017.
25. Melton, B. E. 1995. Conception to consumption: The economics of genetic improvement. Proc. Beef Improvement Federation 27th Research Symposium and Annual Meeting, Sheridan, WY. pp 40-71.
26. Meyer, K., K. Hammond, M. J. Mackinnon, and P. F. Parnell. 1991. Estimates of covariances between reproduction and growth in Australian beef cattle. J. Anim. Sci. 69:3533-3543.
27. Milagres, J. C., E. U. Dillard, and O. W. Robison. 1979. Heritability estimates for some measures of reproduction in Hereford heifers. J. Anim. Sci. 49:668-674.
28. Moser, D. W., J. K. Bertrand, L. L. Benyshek, M. A. McCann, and T. E. Kiser. 1996. Effects of selection for scrotal circumference in Limousin bulls on reproductive and growth traits of progeny. J. Anim. Sci. 74:2052-2057.
29. Quaas, R. L., and E. J. Pollak. 1980. Mixed model methodology for farm and ranch beef cattle testing programs. J. Anim. Sci. 51:1277-1287.
30. Reverter, A., B. L. Golden, R. M. Bourdon, and J. S. Brinks. 1994. Method ℛ; variance components procedure: Application on the simple breeding value model. J. Anim. Sci. 72:2247-2254.
31. SAS. 1990. SAS User's Guide: Statistics (Version 6, 4th Ed.). SAS Inst Inc., Cary, NC.
32. Smith, B. A., J. S. Brinks, and G. V. Richardson. 1989. Relationships of sire scrotal circumference to offspring reproduction and growth. J. Anim. Sci. 67:2881-2885.
33. Snelling, W. M. 1995. Nonlinear mixed-model methods for reproductive traits. Paper presented at WRCC-100 Meetings, Brainerd, MN.
34. Snelling, W. M., M. D. MacNeil, and B. L. Golden. 1996. Application of continuous and binary trait methods to reproductive measures of Hereford cattle. J. Anim. Sci. 74(Suppl. 1):115 (Abstr.).
35. Van der Werf, J., and L. Schaeffer. 1997. Random regression in animal breeding. Course notes. Center for Genetic Improvement of Livestock, Univ. of Guelph, Guelph, ON, Canada (Mimeo).
36. Westell, R. A., R. L. Quaas, and L. D. Van Vleck. 1988. Genetic groups in an animal model. J. Dairy Sci. 71:1310-1318.