Effects of a slow-release urea source on absorption of ammonia and endogenous production of urea by cattle

Animal Feed Science and Technology

Volumn 130, Issue 3-4, 2006, Pages 225-241

  Huntington, G B ^a   Harmon, D L ^b   Kristensen, N B ^c   Hanson, K C ^b   Spears, J W ^a  

^a NORTH CAROLINA STATE UNIVERSITY   (United States)

^b UNIVERSITY OF KENTUCKY   (United States)

^c DANISH INSTITUTE OF AGRICULTURAL SCIENCES   (Denmark)

Author keywords

Ammonia; Rumen; Steers; Urea

Indexed keywords

BOS TAURUS;

EID: 33748745748     PISSN: 03778401     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.anifeedsci.2006.01.012     Document Type: Article

References (22)

1. AOAC, 1990. Official Methods of Analysis. Arlington, VA, USA.
2. Bartley E.E., Avery T.B., Nagaraja T.G., Watt B.R., Davidovich A., Galitzer S., and Lassman B. Ammonia toxicity in cattle. V. Ammonia concentration of lymph and portal, carotid and jugular blood after the ingestion of urea. J. Anim Sci. 53 (1981) 494-498
3. Bohnert D.W., Harmon D.L., Larson B.T., Richards C.J., and Streeter M.N. Efficacy of laidlomycin propionate in low-protein diets fed to growing beef steers: effects on steer performance and ruminal nitrogen metabolism. J. Anim. Sci. 78 (2000) 173-180
4. Cass, J.L., Richardson, C.R., 1994. In vitro ammonia release from urea/calcium compounds as compared to urea and cottonseed meal. Texas Tech. Univ. Agr. Sci. Natl. Res. Tech. Rpt. No. T-5-342. Texas Tech University, Lubbock, TX, USA.
5. Cass, J.L., Richardson, C.R., Albin, R.C., Miller, M.F., 1995. Effects of slow ammonia release urea/calcium compound on performance and carcass characteristics of feedlot steers. Texas Tech Univ. Agr. Sci. Natl. Res. Tech. Rpt. No. T-5-356. Texas Tech University, Lubbock, TX, USA.
6. Chalmers M.I., Jaffray A.E., and White F. Movements of ammonia following intraruminal administration of urea or casein. Proc. Nutr. Soc. 30 (1971) 7-17
7. Edjtehadi M., Szabuniewicz M., and Emmanuel B. Acute urea toxicity in sheep. Can. J. Comp Med. 42 (1978) 63-68
8. Emmanuel B., and Edjtehadi M. Glucose biokinetics in normal and urea-treated sheep (Ovis aries). Comp. Biochem. Physiol. 68B (1981) 555-560
9. Emmanuel B., Thompson J.R., Christopherson R.J., Mulligan L.P., and Berzins R. Interrelationships between urea, ammonia, glucose, insulin and adrenaline during ammonia-urea toxicosis in sheep (Ovis aries). Comp. Biochem. Physiol. A 72 (1982) 697-702
10. Fernandez J.M., Croom Jr. W.J., Johnson A.D., Jaquette R.D., and Edens F.W. Subclinical ammonia toxicity in steers: effects on blood metabolite and regulatory hormone concentrations. J. Anim Sci. 66 (1988) 3259-3266
11. Fernandez J.M., Croom Jr. W.J., Tate Jr. L.P., and Johnson A.D. Subclinical ammonia toxicity in steers: effects on hepatic and portal-drained visceral flux of metabolites and regulatory hormones. J. Anim. Sci. 68 (1990) 1726-1742
12. Haussinger D., Lamers W.H., and Moorman A.F. Hepatocyte heterogeneity in the metabolism of amino acids and ammonia. Enzyme 46 (1992) 72-93
13. Huntington G.B., Reynolds C.K., and Stroud B.H. Techniques for measuring blood flow in splanchnic tissues of cattle. J. Dairy Sci. 72 (1989) 1583-1595
14. Kristensen N.B., and Harmon D.L. Splanchnic metabolism of volatile fatty acids absorbed from the washed reticulorumen of steers. J. Anim. Sci. 82 (2004) 2033-2042
15. Marsh W.H., Fingerhut B., and Miller H. Automated and manual direct methods for the determination of blood urea. Clin. Chem. 11 (1965) 624-627
16. NRC. Nutrient Requirements of Beef Cattle. seventh ed. (1996), National Academy Press, Washington, DC
17. Orzechowski A., Motyl T., Pierzynowski G., and Barej W. Hepatic capacity for ammonia removal in sheep. Zentralbl. Veterinarmed. A 34 (1987) 108-112
18. SAS. User's Guide: Statistics. Version 8.2 (1999), SAS Institute Inc., Cary, NC, USA
19. Spires H.R., and Clark J.H. Effect of intraruminal urea administration on glucose metabolism in dairy steers. J. Nutr. 109 (1979) 1438-1447
20. Symonds H.W., Mather D.L., and Collis K.A. The maximum capacity of the liver of the adult dairy cow to metabolize ammonia. Br. J. Nutr. 46 (1981) 481-486
21. Taylor C.C., Kitts S.E., Kristensen N.B., and Harmon D.L. Influence of slow-release urea on nitrogen flux in steers. J. Anim. Sci. 82 Suppl. 1 (2004) 219
22. Van Soest P.J., and Robertson J.B. Systems of analysis for evaluating fibrous feeds. Proceedings of the International Workshop Standardization of Analytical Methodology for Feeds. International Development Research Center, Ottawa, Canada (1980) 49-60