Environmental effects on conception rates of Holsteins in New York and Georgia

Journal of Dairy Science

Volumn 91, Issue 2, 2008, Pages 818-825

  Huang, C ^a   Tsuruta, S ^a   Bertrand, J K ^a   Misztal, I ^a   Lawlor, T J ^b   Clay, J S ^c  

^a UNIVERSITY OF GEORGIA   (United States)

^b Holstein Association USA Inc   (United States)

^c Dairy Records Management Systems   (United States)

Author keywords

Conception rate; Fertility; Holstein

Indexed keywords

ANIMAL; ARTICLE; CATTLE; CLIMATE; FEMALE; FERTILIZATION; LACTATION; MALE; MILK; PHYSIOLOGY; PREGNANCY; REGRESSION ANALYSIS; SEASON; SECRETION; UNITED STATES;

ANIMALS; CATTLE; CLIMATE; FEMALE; FERTILIZATION; GEORGIA; LACTATION; LEAST-SQUARES ANALYSIS; MALE; MILK; NEW YORK; PREGNANCY; SEASONS;

EID: 39049145833     PISSN: 00220302     EISSN: 15253198     Source Type: Journal    
DOI: 10.3168/jds.2007-0306     Document Type: Article

References (23)

1. Al-Katanani, Y. M., F. F. Paula-Lopes, and P. J. Hansen. 2002. Effect of season and exposure to heat stress on oocyte competence in Holstein cows. J. Dairy Sci. 85:390-396.
2. Averill, T. A., R. Rekaya, and K. Weigel. 2004. Genetic analysis of male and female fertility using longitudinal binary data. J. Dairy Sci. 87:3947-3952.
3. Barbat, A., T. Druet, B. Bonaïti, F. Guillaume, J. J. Colleau, and D. Boichard. 2005. Bilan phenotypique de la fertilite a l'insemination artificielle dans les trois principales races laitieres francaises. Pages 137-140 in Proc. Rene. Rech. Rumin. Institut de l'Elevage-INRA. Impression Capitale, Paris, France.
4. Bohmanova, J., I. Misztal, S. Tsuruta, H. D. Norman, and T. J. Lawlor. 2005. National genetic evaluation of milk yield for heat tolerance of United States Holsteins. Interbull Bull. 33:160-162.
5. Clay, J. S., and B. T. McDaniel. 2001. Computing mating bull fertility from DHI nonreturn data. J. Dairy Sci. 84:1238-1245.
6. 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.
7. de Vries, A., and C. A. Risco. 2005. Trends and seasonality of reproductive performance in Florida and Georgia dairy herds from 1976 to 2002. J. Dairy Sci. 88:3155-3165.
8. de Vries, A., C. Steenholdt, and C. A. Risco. 2005. Pregnancy rate and milk production in natural service and artificially inseminated dairy herds in Florida and Georgia. J. Dairy Sci. 88:948-956.
9. Eicker, S. W., Y. T. Gröhn, and J. A. Hertl. 1996. The association between cumulative milk yield, days open, and days to first breeding in New York Holstein cows. J. Dairy Sci. 79:235-241.
10. Jordan, E. R. 2003. Effects of heat stress on reproduction. J. Dairy Sci. 86(E Suppl.):E104-E114.
11. López-Gatius, F. 2003. Is fertility declining in dairy cattle? A retrospective study in northeastern Spain. Theriogenology 60:89-99.
12. Lucy, M. C. 2001. Reproductive loss in high-producing dairy cattle: Where will it end? J. Dairy Sci. 84:1277-1293.
13. 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.
14. Morton, J. M., W. P. Tranter, D. G. Mayer, and N. N. Jonsson. 2007. Effects of environmental heat on conception rates in lactating dairy cows. Critical periods of exposure. J. Dairy Sci. 90:2271-2278.
15. Ojango, J. M. K., and G. E. Pollott. 2001. Genetics of milk yield and fertility traits in Holstein-Friesian cattle on large-scale Kenyan farms. J. Anim. Sci. 79:1742-1750.
16. Oseni, S., I. Misztal, S. Tsuruta, and R. Rekaya. 2003. Seasonality of days open in US Holsteins. J. Dairy Sci. 86:3718-3725.
17. Oseni, S., I. Misztal, S. Tsuruta, and R. Rekaya. 2004a. Genetic components of days open under heat stress. J. Dairy Sci. 87:3022-3028.
18. Oseni, S., S. Tsuruta, I. Misztal, and R. Rekaya. 2004b. Genetic parameters for days open and pregnancy rates in US Holsteins using different editing criteria. J. Dairy Sci. 87:4327-4333.
19. Pryce, J. E., M. D. Royal, P. C. Garnsworthy, and I. L. Mao. 2004. Fertility in the high-producing dairy cow. Livest. Prod. Sci. 86:125-135.
20. Ravagnolo, O., and I. Misztal. 2002. Effect of heat stress on nonreturn rate in Holsteins: Fixed-model analyses. J. Dairy Sci. 85:3101-3106.
21. SAS Institute. 1996. SAS/STAT Software: Changes and Enhancements Through Release 6.11. SAS Inst. Inc., Cary, NC.
22. Washburn, S. P., W. J. Silvia, C. H. Brown, B. T. McDaniel, and A. J. McAllister. 2002. Trends in reproductive performance in southeastern Holstein and Jersey DHI herds. J. Dairy Sci. 85:244-251.
23. 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.