Relationship between United States and Canadian Genetic Evaluations of Longevity and Somatic Cell Score

Journal of Dairy Science

Volumn 80, Issue 8, 1997, Pages 1807-1812

  Powell, R L ^a   Vanraden, P M ^a   Wiggans, G R ^a  

^a AGRICULTURAL RESEARCH SERVICE   (United States)

Author keywords

Genetic evaluation; Longevity; Somatic cell score

Indexed keywords

ANIMAL; ARTICLE; CANADA; CATTLE; CELL COUNT; CYTOLOGY; FEMALE; GENETICS; LACTATION; LONGEVITY; MALE; MILK; UNITED STATES;

ANIMALS; CANADA; CATTLE; CELL COUNT; FEMALE; LACTATION; LONGEVITY; MALE; MILK; UNITED STATES;

EID: 0031201354     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(97)76115-0     Document Type: Article

References (15)

1. Calo, L. L., R. E. McDowell, L. D. Van Vleck, and P. D. Miller. 1973. Genetic aspects of beef production among Holstein-Friesians pedigree selected for milk production. J. Anim. Sci. 37:676.
2. Ducrocq, V., R. L. Quaas, E. J. Pollak, and G. Casella. 1988. Length of productive life of dairy cows. 2. Variance component estimation and sire evaluation. J. Dairy Sci. 71:3071.
3. Goddard, M. 1985. A method of comparing sires evaluated in different countries. Livest. Prod. Sci. 13:321.
4. International Bull Evaluation Service. 1990. Recommended procedures for international use of sire proofs. Bull. No. 4. Dep. Anim. Breed. Genet., SLU, Uppsala, Sweden.
5. International Bull Evaluation Service. 1992. Sire evaluation procedures for dairy production traits practiced in various countries, 1992. Bull. No. 5. Dep. Anim. Breed. Genet., SLU, Uppsala, Sweden.
6. International Bull Evaluation Service. 1996. Sire evaluation procedures for non-dairy production and growth and beef production traits practiced in various countries, 1996. Bull. No. 13. Dep. Anim. Breed. Genet., SLU, Uppsala, Sweden.
7. Jairath, L. K., J.C.M. Dekkers, L. R. Schaeffer, and Z. Liu. 1996. Genetic evaluation for herd life in Canada. Proc. Open Session INTERBULL Annu. Mtg., Veldhoven, The Netherlands, June 23-24, 1996. Int. Bull Eval. Serv. Bull. No. 14. Dep. Anim. Breed. Genet., SLU, Uppsala, Sweden.
8. Powell, R. L., G. R. Wiggans, and P. M. VanRaden. 1994. Factors affecting calculation and use of conversion equations for genetic merit of dairy bulls. J. Dairy Sci. 77:2679.
9. Reents, R., J.C.M. Dekkers, and L. R. Schaeffer. 1995. Genetic evaluation for somatic cell score with a test day model for multiple lactations. J. Dairy Sci. 78:2858.
10. Reents, R., J. Jamrozik, L. R. Schaeffer, and J.C.M. Dekkers. 1995. Estimation of genetic parameters for test day records of somatic cell score. J. Dairy Sci. 78:2847.
11. Rogers, G. W., G. Banos, U. Sander Nielsen, and J. Philipsson. 1996. Genetic correlations among somatic cell scores, productive life, and type traits from the United States and udder health measures from Denmark and Sweden. Page 34 in Proc. Open Session INTERBULL Annu. Mtg., Veldhoven, The Netherlands, June 23-24, 1996. Int. Bull Eval. Serv. Bull. No. 14. Dep. Anim. Breed. Genet., SLU, Uppsala, Sweden.
12. Schutz, M. M. 1994. Genetic evaluation of somatic cell scores for United States dairy cattle. J. Dairy Sci. 77:2113.
13. VanRaden, P. M., and G. R. Wiggans. 1994. Changes in USDA-DHIA genetic evaluation (July 1994). AIPL Res. Rep. CH2, Anim. Improvement Progr. Lab., Beltsville, MD.
14. VanRaden, P. M., and G. R. Wiggans. 1995. Productive life evaluations: calculation, accuracy, and economic value. J. Dairy Sci. 78:631.
15. Wiggans, G. R., P. M. VanRaden, and R. L. Powell. 1992. A method for combining United States and Canadian bull evaluations. J. Dairy Sci. 75:2834.