Calving ease (Co)variance components for a sire-maternal grandsire threshold model

Journal of Dairy Science

Volumn 86, Issue 5, 2003, Pages 1845-1848

  Wiggans, G R ^a   Misztal, I ^b   Van Tassell, C P ^a,c  

^a Anim Improvement Programs Lab   (United States)

^b AGRICULTURAL RESEARCH SERVICE   (United States)

^c UNIVERSITY OF GEORGIA   (United States)

Author keywords

Calving ease; Dystocia; Threshold model

Indexed keywords

ANALYSIS OF VARIANCE; ANIMAL; ARTICLE; BIOLOGICAL MODEL; BIRTH; BREEDING; CATTLE; FEMALE; GENETIC VARIABILITY; GENETICS; MALE; MATHEMATICS; PARITY; PHYSIOLOGY; PREGNANCY; QUANTITATIVE TRAIT; SEASON;

ANALYSIS OF VARIANCE; ANIMALS; BREEDING; CATTLE; FEMALE; MALE; MATHEMATICS; MODELS, GENETIC; PARITY; PARTURITION; PREGNANCY; QUANTITATIVE TRAIT, HERITABLE; SEASONS; VARIATION (GENETICS);

EID: 0042809699     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(03)73771-0     Document Type: Article

References (11)

1. Berger, P. J. 1994. Genetic prediction for calving ease in the United States: Data, models, and uses by the dairy industry. J. Dairy Sci. 77:1147-1153.
2. Dekkers, J. C. M. 1994. Optimal breeding strategies for calving ease. J. Dairy Sci. 77:3441-3453.
3. Djemali, M., P. J. Berger, and A. E. Freeman. 1987. Ordered categorical sire evaluation for dystocia in Holsteins. J. Dairy Sci. 70:2374-2384.
4. Harville, D. A., and R. W. Mee. 1984. A mixed-model procedure for analyzing ordered categorical data. Biometrics 40:393-408.
5. Luo, M. F., P. J. Boettcher, J. C. M. Dekkers, and L. R. Schaeffer. 1999. Bayesian analysis for estimation of genetic parameters of calving ease and stillbirths for Canadian Holsteins. J. Dairy Sci. 82:1848. (http://www.adsa.org/ manuscripts/jds8423/)
6. Misztal, I., D. Gianola, and J. L. Foulley. 1989. Computing aspects of a nonlinear method of sire evaluation for categorical data. J. Dairy Sci. 72:1557-1568.
7. Misztal, I., S. Tsuruta, T. Strabel, B. Auvray, T. Druet, and D.H. Lee. 2002. BLUPF90 and related programs (BGF90). Proc. 7th World Congr. Genet. Appl. Livest. Prod., Montpellier, France, 33:743-744.
8. Pasman, E., Z. Liu, F. Reinhardt. 2003. An overview of results and current status of MACE for calving traits. Int. Bull Eval. Serv. Bull. No. 30 (In press).
9. Tsuruta, S., I. Misztal, and I. Stranden. 2001. Preconditioned conjugate gradient method by iteration on data in genetic evaluation. J. Anim. Sci. 79:1166-1172.
10. Van Tassell, C. P., G. R. Wiggans, and I. Misztal. 2003. Implementation of a sire-maternal grandsire model for evaluation of calving ease in the United States. J. Dairy Sci. (accepted).
11. Wiggans, G. R., C. P. Van'Tassell, J. C. Philpot, and I. Misztal. 2002. Comparisons of dystocia evaluations from sire and sire-maternal grandsire threshold models. Proc. 7th World Congr. Genet. Appl. Livest. Prod., Montpellier, France. 32:561-564.