Effects of barley grain processing and dietary ruminally degradable protein on urea nitrogen recycling and nitrogen metabolism in growing lambs

Journal of Animal Science

Volumn 85, Issue 12, 2007, Pages 3391-3399

  Kiran, D ^a   Mutsvangwa, T ^a  

^a UNIVERSITY OF SASKATCHEWAN   (Canada)

Author keywords

Nitrogen metabolism; Processed barley; Ruminally degradable protein; Sheep; Urea nitrogen recycling

Indexed keywords

NITROGEN;

ABSORPTION; ANIMAL; ANIMAL FOOD; ARTICLE; BARLEY; CARBOHYDRATE DIET; CHEMISTRY; FECES; FERMENTATION; FOOD HANDLING; GROWTH, DEVELOPMENT AND AGING; METABOLISM; METHODOLOGY; MICROBIOLOGY; NEWBORN; PROTEIN INTAKE; RANDOMIZATION; RUMINANT STOMACH; SHEEP; SPLANCHNIC BLOOD FLOW; UREA NITROGEN BLOOD LEVEL; URINE;

ABSORPTION; ANIMAL FEED; ANIMAL NUTRITION PHYSIOLOGY; ANIMALS; ANIMALS, NEWBORN; BLOOD UREA NITROGEN; DIETARY CARBOHYDRATES; DIETARY PROTEINS; FECES; FERMENTATION; FOOD HANDLING; HORDEUM; NITROGEN; NITROGEN ISOTOPES; RANDOM ALLOCATION; RUMEN; SHEEP; SPLANCHNIC CIRCULATION;

BACTERIA (MICROORGANISMS); HORDEUM; OVIS ARIES;

EID: 37049010940     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/jas.2007-0081     Document Type: Article

References (24)

1. AOAC. 1990. Official Methods of Analysis. 15th ed. Assoc. Off. Anal. Chem., Arlington, VA.
2. Archibeque, S. L., J. C. Burns, and G. B. Huntington. 2001. Urea flux in beef steers: Effects of forage species and nitrogen fertilization. J. Anim. Sci. 79:1937-1943.
3. Canadian Council on Animal Care. 1993. Guide to the Care and Use of Experimental Animals. Vol. 1. CCAC, Ottawa, Ontario, Canada.
4. Chen, X. B., and M. J. Gomes. 1992. Estimation of microbial protein supply to sheep and cattle based on urinary excretion of purine derivatives- An overview of the technical details. Int. Feed Resources Unit, Rowett Research Institute. Aberdeen. UK.
5. Dabiri, N., and M. L. Thonney. 2004. Source and level of supplemental protein for growing lambs. J. Anim. Sci. 82:3237-3244.
6. Harmeyer, J., and H. Martens. 1980. Aspects of urea metabolism in ruminants with reference to the goat. J. Dairy Sci. 63:1707-1728.
7. Huntington, G. B. 1989. Hepatic urea synthesis and site and rate of urea removal from blood of beef steers fed alfalfa hay or a high concentrate diet. Can. J. Anim. Sci. 69:215-223.
8. Kennedy, P. M., and L. P. Milligan. 1980. The degradation and utilization of endogenous urea in the gastrointestinal tract of ruminants: A review. Can. J. Anim. Sci. 60:205-221.
9. Lapierre, H., and G. E. Lobley. 2001. Nitrogen recycling in the ruminant: A review. J. Dairy Sci. 84 (E Suppl.):E223-E236.
10. 15N] urea kinetics. Br. J. Nutr. 84:459-468.
11. Marini, J. C., J. M. Klein, J. M. Sands, and M. E. Van Amburgh. 2004. Effect of nitrogen intake on nitrogen recycling and urea transporter abundance in lambs. J. Anim. Sci. 82:1157-1164.
12. Marini, J. C., and M. E. Van Amburgh. 2003. Nitrogen metabolism and recycling in Holstein heifers. J. Anim. Sci. 81:545-552.
13. Marsh, W. H., B. Fingerhunt, and E. Kirsch. 1957. Determination of urea N with the diacetyl method and an automatic dialyzing apparatus. Am. J. Clin. Pathol. 28:681-688.
14. NRC. 2001. Nutrient Requirements of Dairy Cattle. 7th rev. ed. National Academy Press. Washington, DC.
15. Oncuer, A., J. S. Milne, and F. G. Whitelaw. 1990. The effect of a hindgut fermentation on urea metabolism in sheep nourished by intragastric infusion. Exp. Physiol. 75:689-700.
16. Rémond, D., F. Meschy, and R. Boivin. 1996. Metabolites, water and mineral exchanges cross the rumen wall: Mechanisms and regulation. Ann. Zootech. 45:97-119.
17. Reynal, S. M., and G. A. Broderick. 2005. Effect of dietary level of rumen-degraded protein on production and nitrogen metabolism in lactating dairy cows. J. Dairy Sci. 88:4045-4064.
18. Sarraseca, A., E. Milne, M. J. Metcalf, and G. E. Lobley. 1998. Urea recycling in sheep: Effects of intake. Br. J. Nutr. 79:79-88.
19. Siddons, R. C., J. V. Nolan, D. E. Beever, and J. C. MacRae. 1985. Nitrogen digestion and metabolism in sheep consuming diets containing contrasting forms and levels of N. Br. J. Nutr. 54:175-187.
20. Sunny, N. E., S. L. Owens, R. L. Baldwin VI, S. W. El-Kadi, R. A. Kohn, and B. J. Bequette. 2007. Salvage of blood urea nitrogen in sheep is highly dependent upon plasma urea concentration and the efficiency of capture within the digestive tract. J. Anim. Sci. 85:1006-1013.
21. Theurer, C. B., G. B. Huntington, J. T. Huber, R. S. Swingle, and J. A. Moore. 2002. Net absorption and utilization of nitrogenous compounds across ruminal, intestinal, and hepatic tissues of growing beef steers fed dry-rolled or steam-flaked sorghum grain. J. Anim. Sci. 80:525-532.
22. Thornton, R. F., P. R. Bird, M. Somers, and R. J. Moir. 1970. Urea excretion in ruminants III. The role of the hind-gut (caecum and colon). Aust. J. Agric. Res. 21:345-354.
23. Van Soest, P. J., J. B. Robertson, and B. A. Lewis. 1991. Methods for dietary fiber, neutral detergent fiber and non-starch polysaccharides (NSP) in relation to animal nutrition. J. Dairy Sci. 74:3583-3597.
24. Yu, P., D. A. Christensen, and J. J. McKinnon. 2003. Effect of variety and maturity stage on chemical composition, carbohydrate and protein subfractions, in vitro rumen degradability and energy values of timothy and alfalfa. Can. J. Anim. Sci. 83:279-290.