Association between milk urea nitrogen and fertility in Ohio dairy cows

Journal of Dairy Science

Volumn 84, Issue 2, 2001, Pages 482-489

  Rajala Schultz, P J ^a   Saville, W J A ^a   Frazer, G S ^a   Wittum, T E ^a  

^a OHIO STATE UNIVERSITY   (United States)

Author keywords

Dairy cows; Fertility; Milk urea nitrogen; Survival analysis

Indexed keywords

ANIMALIA; BOS TAURUS;

NITROGEN; UREA;

ANIMAL; ANIMAL DISEASE; ARTICLE; BREEDING; CATTLE; CATTLE DISEASE; CHEMISTRY; FEMALE; FEMALE INFERTILITY; METABOLISM; MILK; PARITY; PREGNANCY; PROPORTIONAL HAZARDS MODEL; SEASON; SENSITIVITY AND SPECIFICITY;

ANIMALS; BREEDING; CATTLE; CATTLE DISEASES; FEMALE; INFERTILITY, FEMALE; MILK; NITROGEN; PARITY; PREGNANCY; PROPORTIONAL HAZARDS MODELS; SEASONS; SENSITIVITY AND SPECIFICITY; UREA;

EID: 0035258885     PISSN: 00220302     EISSN: None     Source Type: Journal    
DOI: 10.3168/jds.S0022-0302(01)74498-0     Document Type: Article

References (29)

1. al-Katanani, Y. M., D. W. Webb, and P. J. Hansen. 1999. Factors affecting seasonal variation in 90-d nonreturn rate to first service in lactating Holstein cows in a hot climate. J. Dairy Sci 82:2611-2616.
2. Allison, P. D. 1995. Survival Analysis Using the SAS System. A Practical Guide. SAS Institute Inc., Cary, NC.
3. Butler, W. R., J. J. Calaman, and S. W. Beam. 1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. J. Anim. Sci. 74:858-865.
4. Canfield, R., C. Sniffen, and W. Butler. 1990. Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci. 73:2342-2349.
5. Carroll, D. J., B. A. Barton, G. W. Anderson, and R. D. Smith. 1988. Influence of protein and feeding strategy on reproductive performance of dairy cows. J. Dairy Sci. 71:3470-3481.
6. Dhaliwal, G. S., R. D. Murray, and H. Dobson, 1996. Effects of milk yield and calving to first service interval, in determining herd fertility in dairy cows. Anim. Reprod. Sci. 41:109-117.
7. Dransfield, M.B.G., R. L. Nebel, R. E. Pearson, and L. D. Warnick. 1998. Timing of insemination for dairy cows identified in estrus by a radiotelemetric estrus detection system. J. Dairy Sci 81:1874-1882.
8. Eicher, R., E. Bouchard, and M. Bigras-Poulin. 1999. Factors affecting milk urea nitrogen and protein concentrations in Quebec dairy cows. Prev. Vet. Med. 39:53-63.
9. Eicker, S. W., Y. T. Gröhn, and J. A. Hertl. 1996. The association between cumulative milk yield and days open and days to first breeding in New York State dairy cows. J. Dairy Sci. 79:235-241.
10. Elrod, C. C., and W. R. Butler. 1993. Reduction of fertility and alteration of uterine pH in heifers fed excess ruminally degradable protein. J. Anim. Sci. 71:694-701.
11. Elrod, C. C., M. van Amburgh, and W. R. Butler. 1993. Alterations of pH in response to increased dietary protein in cattle and unique to the uterus. J. Anim. Sci. 71:702-706.
12. Emanuelson, U., and Oltenacu, P. A. 1998. Incidences and effects of diseases on the performance of Swedish dairy herds stratified by production. J. Dairy Sci. 81:2376-2382.
13. Ferguson, J., D. Galligan, T. Blanchard, and M. Reeves. 1993. Serum urea nitrogen and conception rate: the usefulness of test information. J. Dairy Sci. 76:3742-3746.
14. Ferguson, J. D., and W. Chalupa. 1989. Impact of protein nutrition on reproduction in dairy cows. J. Dairy Sci. 72:746-766.
15. Gustafsson, A. H., and D. L. Palmqvist, 1993. Diurnal variation of rumen ammonia, serum urea, and milk urea in dairy cows at high and low yields. J. Dairy Sci. 76:475-484.
16. Hof, G., M. D. Vervoorn, P. J. Lenaers, and S. Tamminga. 1997. Milk urea nitrogen as a tool to monitor the protein nutrition of dairy cows. J. Dairy Sci. 80:333-3340.
17. Howard, H. J., E. P. Aalseth, G. D. Adams, L. J. Bush, R. W. McNew, and L. J. Dawson. 1987. Influence of dietary protein on reproductive perfomance of dairy cows. J. Dairy Sci. 70:1563-1571.
18. Jonker, J. S., R. A. Kohn, and R. A. Erdman, 1998. Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows. J. Dairy Sci. 81:2681-2692.
19. Kinsel, M. L., and W. G. Etherington, 1998. Factors affecting reproductive performance in Ontario dairy herds. Theriogenology 50:1221-1238.
20. Larson, S. F., W. R. Butler, and W. B. Currie, 1997. Reduced fertility associated with low progesterone postbreeding and increased milk urea nitrogen in lactating cows. J. Dairy Sci. 80:1288-1295.
21. Miller, P. 2000: MUN Report for April 2000 to DHIA Milk Lab Managers. National DHIA, Columbus, OH.
22. Moore, D. A., and G. Varga. 1996. BUN and MUN: Urea nitrogen testing in dairy cattle. Comp. Cont. Edu. Pract. Vet. 18:712-721.
23. Oltner, R., M. Emanuelson, and H. Wiktorsson 1985. Urea concentrations in milk in relation to milk yield, live weight, lactation number and amount and composition of feed given to dairy cows. Livest. Prod. Sci. 12:47-57.
24. Refsdal, A. O., L. Baerve, and R. Brutflot. 1985. Urea concentration in bulk milk as an indicator of the protein supply at the herd level. Acta Vet. Scand. 26:153-163.
25. Roseler, D. K., J. D. Ferguson, C. J. Sniffen, and J. Herrema. 1993. Dietary protein degradability effects on plasma and milk urea nitrogen and milk nonprotein nitrogen in Holstein cows. J. Dairy Sci. 76: 525-???.
26. SAS Institute Inc. 1994. SAS/STAT Software: Changes and enhancements. Cary, NC, SAS Institute Inc.
27. Sklan, D., and M. Tinsky. 1993. Production and reproduction responses by dairy cows fed varying undegradable protein coated with rumen bypass fat. J. Dairy Sci. 76:216-223.
28. Wenninger, A., and O. Distl. 1994. Harnstoff- und Azetongehalt in der Milch als Indikatoren für ernärungsbedingte Fruchtbarkeitsstörungen der Milchkuh (Urea and acetone in milk as indicators for nutritional fertility disorders of dairy cattle). Dtsch. Tierärztl. Wochenschrift 101:152-157.
29. Wilson, S. J., R. S. Marion, J. N. Spain, D. E. Spiers, D. H. Keisler, and M. C. Lucy 1998: Effects of controlled heat tress on ovarian function of dairy cattle. 1. Lactating cows. J. Dairy Sci. 81:2124-2131.