Excess dietary urea intake in ewes and its effect on ovulation rate and embryo development

Japanese Journal of Veterinary Research

Volumn 44, Issue 3, 1996, Pages 139-151

  Bishonga, Christopher ^a   Robinson, John J ^b   Mcevoy, Tim G ^b   Findlay, Patson ^b   Aitken, Raymond P ^b   Robertson, Irene ^b  

^a HOKKAIDO UNIVERSITY   (Japan)

^b ROWETT RESEARCH INSTITUTE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

AMMONIA; LUTEINIZING HORMONE; PROGESTERONE; PROSTAGLANDIN F2 ALPHA; SERIC GONADOTROPIN; UREA;

ANIMAL; ANIMAL DISEASE; ARTICLE; BLOOD; BODY WEIGHT; DIET; DOSE RESPONSE; DRUG EFFECT; ESTRUS CYCLE; FEMALE; IN VITRO STUDY; LAPAROSCOPY; OVULATION; PHYSIOLOGY; PREGNANCY; PRENATAL DEVELOPMENT; RANDOMIZATION; SHEEP; TIME;

AMMONIA; ANIMALS; BODY WEIGHT; DIET; DINOPROST; DOSE-RESPONSE RELATIONSHIP, DRUG; EMBRYONIC AND FETAL DEVELOPMENT; ESTRUS SYNCHRONIZATION; FEMALE; GONADOTROPINS, EQUINE; LAPAROSCOPY; LUTEINIZING HORMONE; OVULATION; PREGNANCY; PROGESTERONE; RANDOM ALLOCATION; SHEEP; TIME FACTORS; UREA;

EID: 0030340317     PISSN: 00471917     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (26)

1. ASHWORTH, C. J., SALES, D. J. & WILMUT, I. : Evidence of an association between the survival of embryos and the periovulatory plasma progesterone concentration in the ewe. Theriogenology. 54: 749-759, 1989.
2. BLAUWIEKEL, R., KINCAID, R. L. & REVEES, J. J. : Effect of high crude protein on pituitary and ovarian function in Holstein cows. J. Dairy Sci. 69: 439-446, 1986.
3. CANIFIELD, R. W., SNIFFEN, C. J. & BUTLER, W. R. : Effects of excess degradable protein on postpartum reproduction and energy balance in dairy cattle. J. Dairy Sci. 73: 2342-2349, 1990.
4. CARROLL, D. J., BARON, R. A., ANDERSON, G. W. & SMITH, R. D. : Influence of protein intake and feeding strategy on reproductive performance of dairy cows. J. Dairy Sci. 71: 3470-3481, 1988.
5. DJAHANBAHKCH, O., SWANSTON, I. I., CORRIE, J. E. T. & MCNEILLY, A. S. : Prediction of ovulation by progesterone. Lancet. 2(8256): 1164-1165, 1981.
6. ELROD, C. C. : High dietary protein and high fertility can we have both? In: Proceedings of Cornell Nutrition Conference for Feed Manufacturers, 54th Meeting, October 13-15. Ithaca, New York, 1992.
7. ELROD, C. C. & BUTLER, W. R. : Reduction of fertility due to reduction of uterine pH in heifers fed excess ruminally degradable protein. J. Anim. Sci. 71: 694-701, 1993.
8. ELROD, C. C., VAN AMBURGH, M. & BUTLER, W. R. : Alterations of pH in response to increased dietary protein in cattle is unique to the uterus. J. Anim. Sci. 71 : 702-706, 1993.
9. FOLMAN, Y., NEUMARK, H., KAIM, M. & KAUFMANN, W. : Performance, rumen and blood metabolites in high yielding cows fed varying protein percents and protected soyabean. J. Dairy Sci. 64: 759-768, 1981.
10. HARMEYER, I. & MARTENS, H. : Aspects of urea metabolism in ruminants with reference to the goat. J. Dairy Sci. 63: 1707-1728, 1980.
11. HOWARD, H. P., AASLETH, E. P., ADAMS, G. D. & BUSH, L. J. : Influence of dietary protein on reproductive performance of dairy cows. J. Dairy Sci. 70: 1563-1571, 1987.
12. HUNTER, G. L., ADAMS, C. E. & ROWSON, L. E. A. : Interbreed ovum transfer in sheep. J. Agric. Sci. 46: 143-149, 1955.
13. JORDAN, E. R. & SWANSON, L. V. : Serum progesterone and luteinizing hormone in dairy cattle fed varying levels of crude protein. J. Anim. Sci. 48: 1154-1158, 1979.
14. JORDAN, E. R., CHAPMAN, T. E., HOLTAN, D. W. & SWANSON, L. V. : Relationship of dietary crude protein to compostion of uterine secretions and blood in high producing postpartum dairy cows. J. Dairy Sci. 66: 1854-1862, 1983.
15. KAIM, M., FOLMAN, Y. & NEUMARK, H. : The effect of protein intake and lactation number on postpartum body weight loss and reproductive performance of dairy cows. J. Anim. Prod. 37: 227-235, 1983.
16. LINDNER, G. M. & WRIGHT, R. W. JR. : Bovine embryo morphology and evaluation. Theriogenology. 20: 407-416, 1983.
17. MCEVOY, T. G., ROBINSON, J. J., AITKEN, R. P., KYLE, C. E. & ROBERTSON, I. S. : The effect of feeding level during a 12-day progesterone priming period on the viability of embryos collected from superovulated ewes. B S A P Winter Meeting. Scarbrough. Anim. Prod. 56: 432, 1993.
18. MCKELVEY, W. A. C., ROBINSON, J. J. & AITKEN, R. P. : The evaluation of a laparoscopic insemination technique in ewes. Theriogenology 24: 519-533, 1985.
19. MCNEILLY, A. S., JONASSEN, J. A. & FRASER, H. M. : Suppression of follicular development after chronic LHRH immuno-neutralization in ewes. J. Reprod. Fertil. 76: 481-490, 1986.
20. ORSKOV, E. R. & ROBINSON, J. J. : The application of modern concepts of ruminant protein nutrition to sheep production systems. Livestock Sci. 8: 330-350, 1981.
21. RENARD, J.-P., DU MESNIL DU DUISSON, F., WINTENBERGERTORRES, S. & MENEZO, Y. : Invitro culture of cow embryos from day 6 and day 7. In: ROWSON, L. E. A. ed. Egg Transfer in Cattle. pp 159-164. Commission of the European Communities: Luxembourg. 1976.
22. RHIND, S. M. : Nutrition: its effects on reproductive performance and its hormonal control in female sheep and goats. In: Speedy, A. W. ed. Progress in Sheep and Goat Research. pp 25-51, C. A. B International Wallingford, Oxon. 1992.
23. SCUDAMORE, C. L. : Studies in superovulating ewes of factors influencing the yield of fertilized ova, and their capacity for development. Ph. D. thesis. Rowett Research Institute. University of Aberdeen. 1991.
24. TALKE, H. & SCHUBERT, G. E. : Enzyme determination of urea in blood serum by the Warburg optical test. Klin. Wochschr. 43: 174-175, 1965.
25. VISEK, J. W. : Ammonia: its effects on biological systems, metabolic hormones and reproduction. J. Dairy Sci. 67: 481-498, 1982.
26. WALLACE, J. M. AITKEN, R. P. & CHEYNE, M. A. : Conceptus development in vivo endometrial and conceptus protein release in vitro following blastocyst transfer to ewes induced to ovulate at 28 days postpartum. Reprod. Fertil. Dev. 5: 191-200, 1993.