Use of early lactation days open records for genetic evaluation of cow fertility

Journal of Dairy Science

Volumn 87, Issue 7, 2004, Pages 2277-2284

  Kuhn, M T ^a   VanRaden, P M ^a   Hutchison, J L ^a  

^a AGRICULTURAL RESEARCH SERVICE   (United States)

Author keywords

Fertility; Genetic evaluation; Prediction

Indexed keywords

ANIMALIA; BOS TAURUS; MAMMALIA;

EID: 3242781883     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(04)70048-X     Document Type: Article

References (13)

1. Dematawewa, C. M. B., and P. J. Berger. 1997. Effect of dystocia on yield, fertility, and cow losses and an economic evaluation of dystocia scores for Holsteins. J. Dairy Sci. 80:754-761.
2. Dematawewa, C. M. B., and P. J. Berger. 1998. Genetic and phenotypic parameters for 305-day yield, fertility, and survival in Holsteins. J. Dairy Sci. 81:2700-2709.
3. Hansen, L. B., A. E. Freeman, and P. J. Berger. 1983. Yield and fertility relationships in dairy cattle. J. Dairy Sci. 66:293-305.
4. Marti, C. F., and D. A. Funk. 1994. Relationship between production and days open at different levels of herd production. J. Dairy Sci. 77:1682-1690.
5. Raheja, K. L., E. B. Burnside, and L. R. Schaeffer. 1989. Relationships between fertility and production in Holstein dairy cattle in different lactations. J. Dairy Sci. 72:2670-2678.
6. SAS OnlineDoc, Version 8. 1999. SAS Institute Inc., Cary, NC.
7. Seykora, A. J., and B. T. McDaniel. 1983. Heritabilities and correlations of lactation yields and fertility for Holsteins. J. Dairy Sci. 66:1486-1493.
8. Taylor, J. F., R. W. Everett, and B. Bean. 1985. Systematic environmental, direct, and service sire effects on conception rate in artificially inseminated Holstein cows. J. Dairy Sci. 68:3004-3022.
9. VanRaden, P. M. 2000. Methods to combine estimated breeding values obtained from separate sources. J. Dairy Sci. 84(E Suppl.):E47-E55.
10. VanRaden, P. M., and E. J. H. Klaaskate. 1993. Genetic evaluation of length of productive life including predicted longevity of live cows. J. Dairy Sci. 76:2758-2764.
11. VanRaden, P. M., A. H. Sanders, M. E. Tooker, G. R. Wiggans, R. H. Miller, and H. D. Norman. 2004. Development of a national genetic evaluation for cow fertility. J. Dairy Sci. 87:2285-2292.
12. VanRaden, P. M., G. R. Wiggans, and C. A. Ernst. 1991. Expansion of projected lactation yield to stabilize genetic variance. J. Dairy Sci. 74:4344-4349.
13. Weigel, K. A., and R. Rekaya. 2000. Genetic parameters for reproductive traits of Holstein cattle in California and Minnesota. J. Dairy Sci. 83:1072-1080.