Urea recycling in the rumen of dairy goats: Effects of physiological stage and composition of intake

Small Ruminant Research

Volumn 23, Issue 2-3, 1997, Pages 83-90

  Brun Bellut, J ^a  

^a UNIVERSITÉ DE LORRAINE   (France)

Author keywords

Dairy goats; Lactation; Pregnancy; Urea recycling

Indexed keywords

ANIMALIA; CAPRA HIRCUS;

EID: 0043140272     PISSN: 09214488     EISSN: None     Source Type: Journal    
DOI: 10.1016/s0921-4488(96)00910-8     Document Type: Article

References (21)

1. Abdelghani A., 1990. Contribution à l'étude du flux des matières azotées dans le tube digestif de chèvres laitières (Nitrogen flow in the digestion tract of dairy goats). Thèse INPL, Nancy France, pp. 152.
2. Boda K., Varady J., Havassy I., Kosta K. and Fejes J., 1976. Exchanges of nitrogenous substances between the body pool and the digestible tract in ruminants. In: Nuclear techniques in animal production and health. Inter. Atomic Energy Agency, Vienna, 319-326.
3. Brun-Bellut J., Kelly J.M., Mathison G.W. and Christopherson R.J., 1991. Effect of rumen degraded protein and lactation on nitrogen metabolism in dairy goats. Can. J. Anim. Sci., 71, 1111-1124.
4. Bunting L.D., Boling J.A. and MacKown C.T., 1989. Effect of dietary protein level on nitrogen metabolism in the growing calves. 1. Nitrogen recycling and intestinal protein supply in cattle. J. Anim. Sci., 67, 810-819.
5. Dixon R.M. and Nolan J.V. 1986. Nitrogen and carbon flows between the caecum, blood and rumen in sheep given chopped lucerne (medicago sativa) hay. Br. J. Nutr., 55, 313-332.
6. Doreau M. and Remond B., 1982. Comportement alimentaire et utilisation digestive d'une ration de composition constante chez la vache laitière en fin de gestation et début de lactation (Intake and digestibilities in dairy cows at end of pregnancy and beginning of lactation). Reprod. Nutr. Develop., 22, 307-324.
7. Egan A.R., Boda K. and Varady J. 1986. Regulation of nitrogen metabolism and recycling. In: L.P. Milligan, W.L. Grovum and A. Dodson, eds. Control of digestion and metabolism in ruminants. Prentice-Hall, Englewood Cliffs, NJ., pp. 386-402.
8. Gonzalez J.S., Robinson J.J. and Fraser C., 1985. The effect of physiological state on digestion in the ewe and its influence on the quantity of protein reaching the abomasum. Livest. Prod. Sci., 12, 59-68.
9. Kennedy P.M. and Milligan L.P., 1980. The degradation and utilization of endogenous urea in the gastrointestinal tract of ruminants: a review. Can. J. Anim. Sci., 60, 205-221.
10. MacRae J.C. and Wilson S. 1978. Problems associated with scintillation counting of 14C-bicarbonate and gel suspension counting of 14C-barium carbonate. Int. J. Appl. Radiat. Isot., 29, 191-195.
11. Morand-Fehr P., Sauvant D. and Brun-Bellut J. 1987. Recommandations alimentaires pour les caprins. (Nutritional allowance for goats.) Bull. Tech. CRZV, 70, 213-222.
12. N.R.C., 1985. Ruminant nitrogen usage. National Academy Press - National Research Council. Washington, DC, USA.
13. Nolan J.V. and Leng R.A. 1972. Dynamic aspects of ammonia and urea metabolism in sheep. Br. J. Nutr., 27, 177-194.
14. Obara Y. and Shimbayashi K., 1987. The appearance of recycled urea in the digestive tract of goats fed a high-protein ration. Jp. J. Zootech. Sci., 58, 611-617.
15. Obara Y. and Shimbayashi K., 1988. Appearance of blood urea in each section of the digestive tract. Jp. J. Zootech. Sci., 59, 604-617.
16. Oddy V.H., Gooden J.M. and Annison E.F. 1983. Effect of diet and physiological state on recycling of urea in Merinos ewes. S. Afr. Tydskr. Veek., 13, 70-72,
17. Remond D., Chaise J.P., Deval E. and Poncet D., 1993. Net transfer of urea and ammonia across the rumen wall of sheep. J. Anim. Sci., 71, 2785-2792.
18. Remond D., Meschy F. and Boivin R., 1996. Metabolites, water and mineral exchanges across the rumen wall: mechanism and regulation. Ann. Zootech., 45, 97-119.
19. Siest G. 1968. Etude de la réaction urée-diacétylmonoxime. 2. Essais de divers adjuvents. Choix d'une méthode de dosage (Determination of urea by urea-diacetylmonoxim method). Ann. Biol. Clin., 26, 431-448.
20. Taniguchi K., Huntington G.B., Glenn B.P., 1995. Net nutrient flow by visceral tissues of beef steers given abomasal and ruminal infusions of casein and starch. J. Anim. Sci., 73, 1, 236-249.
21. Vérité R., Michalet-Doreau B., Chapoutot P., Peyraud J.L. and Poncet C., 1987. Révision du système des protéines dans l'intestin (Revision of PDI system). Bull. Tech. CRZV 70, 19-34.