Journal of Animal and Veterinary Advances

Year: 2010
Volume: 9
Issue: 10
Page No. 1519 - 1525

Milk Urea Nitrogen and Fertility in Dairy Farms

Authors : Mohammad Nourozi, Alireza Heravi Moussavi, Mehran Abazari and Mohammad Raiisian Zadeh

References

Allison, P.D., 1995. Survival Analysis Using the SAS System: A Practical Guide. SAS Institute, Inc., Cary, NC., ISBN-13: 9781555442798.

Baker, L.D. and J.D. Ferguson, 1993. Milk urea nitrogen as a metabolic indicator of protein feeding efficiency on dairy farms. Proceedings of 26th Annual Convention American Association of Bovine Practitioners, (ACAABP`93), Wageningen Academic Publishers, Albuquerque NM, pp: 165-166.

Baker, L.D. and J.D. Ferguson, 1995. Response in urea and true protein of milk to different protein feeding schemes for dairy cows. J. Dairy Sci., 78: 2424-2434.
Direct Link  |  

Barton, B.A., H.A. Rosario, G.W. Andersson, B.P. Grindle and D.J. Carroll, 1996. Effects of dietary crude protein, breed, parity and health status on the fertility of dairy cows. J. Dairy Sci., 79: 2225-2236.
CrossRef  |  

Broderick, G.A. and M.K. Clayton, 1997. A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen. J. Dairy Sci., 80: 2964-2971.
Direct Link  |  

Butler, W.R., 1998. Review: Effect of protein nutrition on ovarian and uterine physiology in dairy cattle. J. Dairy Sci., 81: 2533-2539.
CrossRef  |  Direct Link  |  

Butler, W.R., 2000. Nutritional interactions with reproductive performance in dairy cattle. Anim. Reprod. Sci., 60-61: 449-457.
PubMed  |  Direct Link  |  

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.
CrossRef  |  PubMed  |  Direct Link  |  

Carlsson, J. and B. Pehrson, 1993. The relationships between seasonal variations in the concentration of urea in bulk milk and the production and fertility of dairy herds. Zentralbl. Veterinarmed. A, 40: 205-212.
PubMed  |  Direct Link  |  

Carlsson, J. and J. Bergstrom. 1994. The diurnal variation of urea in cow's milk and how milk fat content, storage and preservation affects analysis by a flow injection technique. Acta. Vet. Scand., 34: 67-77.
PubMed  |  Direct Link  |  

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.
PubMed  |  Direct Link  |  

Elrod, C.C., M. van Amburgh and W.R. Butler, 1993. Alterations of pH in response to increased dietary protein in cattle are unique to the uterus. J. Anim. Sci., 71: 702-706.
Direct Link  |  

Ferguson, J.D. and W. Chalupa, 1989. Impact of protein nutrition on reproduction in dairy cows. J. Dairy Sci., 72: 746-766.
CrossRef  |  

Ferguson, J.D., D.T. Galligan, T. Blanchard and M. Reeves, 1993. Serum urea nitrogen and conception rate: the usefulness of test information. J. Dairy Sci., 76: 3742-3746.
CrossRef  |  PubMed  |  Direct Link  |  

Garcia-Bojalil, C.M., C.R. Staples, C.A. Risco, J.D. Savio and W.W. Thatcher, 1998. Protein degradability and calcium salts of long-chain fatty acids in the diets of lactating dairy cows: Reproductive responses. J. Dairy Sci., 81: 1385-1395.
Direct Link  |  

Godden, S.M., D.F. Kelton, K.D. Lissemore, J.S. Walto and K.E. Leslie et al., 2001. Milk urea testing as a tool to monitor reproductive performance in Ontario dairy herds. J. Dairy Sci., 84: 1397-1406.
Direct Link  |  

Guo, K., E. Russek-Cohen, M.A. Varner and R.A. Kohn, 2004. Effects of milk urea nitrogen and other factors on probability of conception of dairy cows. J. Dairy Sci., 87: 1878-1885.
Direct Link  |  

Gustafsson, A.H. and J. Carlsson, 1993. Effects of silage quality, protein evaluation systems and milk urea content on milk yield and reproduction in dairy cows. Livest. Prod. Sci., 37: 91-105.
CrossRef  |  

Hammon, D.S., G.R. Holyoak and T.R. Dhiman, 2005. Association between blood plasma urea nitrogen levels and reproductive fluid urea nitrogen and ammonia concentrations in early lactation dairy cows. Anim. Reprod. Sci., 86: 195-204.
CrossRef  |  Direct Link  |  

Johnson, R.G. and A.J. Young, 2003. The association between milk urea nitrogen and DHI production variables in western commercial dairy herds. J. Dairy Sci., 86: 3008-3015.
Direct Link  |  

Jonker, J.S., R.A. Kohn and J. High, 2002. Use of milk urea-nitrogen to improve dairy cow diet. J. Dairy Sci., 85: 939-946.
Direct Link  |  

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.
Direct Link  |  

Jordan, E.R., T.E. Chapman, D.W. Holtan and L.V. Swanson, 1983. Relationship of dietary crude protein to composition of uterine secretions and blood in high producing post partum dairy cows. J. Dairy Sci., 66: 1854-1862.
Direct Link  |  

Kenny, D.A., M.P. Boland, M.G. Diskin and J.M. Sreenan, 2001. Effect of pasture crude protein and fermentable energy supplementation on blood metabolite and progesterone concentration and embryo survival in heifers. Anim. Sci. Abstr., 73: 501-512.
Direct Link  |  

Kenny, D.A., M.P. Boland, M.G. Diskin and J.M. Sreenan, 2002. Effect of rumen degradable protein with or without fermentable carbohydrate supplementation on blood metabolites and embryo survival in cattle. Anim. Sci., 74: 529-537.

Kohn, R.A., K.F. Kalscheur and E. Russek-Cohen, 2002. Evaluation of models to estimate urinary nitrogen and expected milk urea nitrogen. J. Dairy Sci., 85: 227-233.
Direct Link  |  

Manston, R., A.M. Russell, J.M. Payne and S.M. Dew, 1975. The influence of dietary protein upon blood composition in dairy cows. Vet. Rec., 96: 497-502.
PubMed  |  Direct Link  |  

Miettinen, P.V.A., 1991. Correlation between energy balance and fertility in Finnish dairy cows. Acta Veterinaria Scandinavica, 32: 189-196.
PubMed  |  Direct Link  |  

NRC, 1989. Nutrient Requirements of Dairy Cattle. 6th Rev. Edn., National Academy of Sciences, Washington DC, ISBN: 0309059933, pp: 90-110.

Overton, T.R., J.K. Drackley, C.J. Ottemann-Abbamonte, A.D. Beaulieu, L.S. Emmert and J.H. Clark, 1999. Substrate utilization for hepatic gluconeogenesis is altered by increased glucose demand in ruminants. J. Anim. Sci., 77: 1940-1951.
Direct Link  |  

Pehrson, B., K.P. Forshell and J. Carlsson, 1992. The effect of additional feeding on the fertility of high-yielding dairy cows. Zentralbl. Veterinarmed. A, 39: 187-192.
PubMed  |  Direct Link  |  

Rajala-Schultz, P.J. and W.J.A. Saville, 2001. Association between milk urea nitrogen and fertility in Ohio dairy cows. J. Dairy Sci., 84: 482-489.
Direct Link  |  

SAS Institute Inc., 1994. SAS/STAT Software: Changes and Enhancements. SAS Institute Inc., Cary NC, ISBN: 1-55544-643-4.

Staples, C.R., W.W. Thatcher and J.H. Clark, 1990. Relationship between ovarian activity and energy status during the early postpartum period of high producing dairy cows. J. Dairy Sci., 73: 938-947.
Direct Link  |  

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