Digestibility of amino acids in protein rich tropical feeds for ruminants estimated with the mobile bag technique

Animal Feed Science and Technology

Volumn 69, Issue 1-3, 1997, Pages 271-280

  Mupeta, B ^a   Weisbjerg, M R ^b   Hvelplund, T ^b   Madsen, J ^c  

^a Henderson Research Station Harare   (Zimbabwe)

^b DANISH INSTITUTE OF AGRICULTURAL SCIENCES   (Denmark)

^c UNIVERSITY OF COPENHAGEN   (Denmark)

Author keywords

Concentrate; Degradability; Legumes; Nitrogen

Indexed keywords

ARACHIS HYPOGAEA; BOVIDAE; GOSSYPIUM HIRSUTUM; HELIANTHUS; PISUM SATIVUM;

EID: 0012476804     PISSN: 03778401     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0377-8401(97)81641-0     Document Type: Article

References (28)

1. AOAC, 1990. Associations of Official Agricultural Chemists. Official Methods of Analysis, 15th ed. 2200 Wilson Boulevard, Arlington, Virginia 22201, USA.
2. ARC, 1984. Report of the protein group of the Agricultural Research Council Working Party on the Requirements of Ruminants. Commonwealth Agricultural Bureau, p. 45.
3. Armstrong, D.G., Savage, G.P., Harrison, D.G., 1977. Digestion of nitrogenous substances entering the small intestine with particular reference to amino acids in ruminant livestock. In: Tamminga, S. (Ed.), Protein Metabolism and Nutrition. Centre for Agricultural Publishing and Documentation. Wageningen, The Netherlands, pp. 55-61.
4. Dakowski, P., Weisbjerg, M.R., Hvelplund, T., 1996. The effect of temperature during processing of rape seed meal on amino acid degradation in the rumen and digestion in the intestine. Anim. Feed Sci. Technol. 58, 213-226.
5. De Boer, G., Murphy, J.J., Kennelly, J.J., 1987. Mobile nylon bag for estimating intestinal availability of rumen undegraded protein. J. Dairy Sci. 70, 977-982.
6. Ferreira, A.M., Kerstens, J., Gast, C.H., 1983. The study of several modifications of the neutral detergent fibre procedure. Anim. Feed Sci. Technol. 9, 19-28.
7. Hvelplund, T., 1985. Digestibility of rumen microbial protein and undegraded dietary protein estimated in the small intestine of sheep or by in sacco procedure. Acta Agric. Scand. 25, 132-144.
8. Hvelplund, T., Hesselholt, M., 1987. Digestibility of individual amino acids in rumen microbial protein and undegraded dietary protein in the small intestine of sheep. Acta Agric. Scand. 37, 459-477.
9. Hvelplund, T., Weisbjerg, M.R., Andersen, L.S., 1992. Estimation of the true digestibility of rumen undegraded dietary protein in the small intestine of ruminants by the mobile nylon bag technique. Acta Agric. Scand., Sect. A, Animal Sci. 42, 34-39.
10. Hvelplund, T., Hovell, F.D.DeB., Ørskov, E.R., Kyle, D.J., 1994. True intestinal digestibility of protein estimated with sheep on intragastric infusion and with the mobile nylon bag technique. Proc. Soc. Nutr. Physiol. 3 , 64.
11. 15N labelled roughage. Acta Agric. Scand., Sect. A, Animal Sci. 44, 146-151.
12. Kristensen, E.S., Møller, P.D., Hvelplund, T., 1982. Estimation of the effective protein degradability in the rumen of cows using nylon bag technique combined with outflow rate. Acta Agric. Scand. 32, 123-127.
13. Madsen, J., Hvelplund, T., 1985. Protein degradation in the ruminant. A comparison between in vivo, nylon bag, in vitro and buffer measurements. Acta Agric. Scand. 25, 103-124.
14. Madsen, J., Hvelplund, T., 1994. Prediction of in situ protein degradability in the rumen. Results of an European ringtest. Livestock Prod. Sci. 39, 201-212.
15. Mason, V.C., Bech-Andersen, S., Rudemo, M., 1980. Hydrolysate preparation for amino acid determination in feed constituents. Z. Tierphysiol., Tierernaehr. Futtermittelkd. 43, 156-164.
16. Mgheni, D.M., Hvelplund, T., Weisbjerg, M.R., 1993. Rumen degradability of dry matter and protein in tropical grass and legume forages and their protein values expressed in the AAT-PBV protein evaluation system. Second Biennial Conference of the African Feed Resources Network (AFRNET) 6-10 December 1993, Harare, Zimbabwe, p. 15.
17. Mgheni, D.M., Hvelplund, T., Weisbjerg, M.R., 1994. Intestinal digestibility of rumen undegraded dietary protein from tropical roughages estimated by the mobile bag method. Acta Agric. Scand., Sect A., Animal Sci. 44, 230-235.
18. Michalet-Doreau, B., Ould-Bah, M.Y., 1992. In vitro and in sacco methods for the estimation of dietary nitrogen degradability in the rumen: a review. Anim. Feed Sci. Technol. 40, 57-86.
19. NKJ, 1985. Introduction of the Nordic protein evaluation system for ruminants into practice and further research requirements . Acta Agric. Scand. 25, 216-220.
20. NRC, 1985. Ruminal nitrogen usage. National Academy Press, Washington DC, p. 138.
21. Ørskov, E.R., McDonald, I., 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. J. Agric. Sci., Cambr. 92, 499-503.
22. Rulquin, H., Pisulewski, P.M., Verite, R., Guinard, T., 1993. Milk production and composition as a function of postruminal lysine and methionine supply: a nutrient-response approach. Livestock Prod. Sci. 37, 69-90.
23. SAS, 1985. SAS User's Guide: Statistics. SAS Institute, Box 8000, Cary, NC 27511, p. 584.
24. Skórko-Sajko, H., Hvelplund, T., Weisbjerg, M.R., 1994. Rumen degradation and intestinal digestibility of amino acids in different roughages estimated by nylon bag technique. J. Anim. Feed Sci. 3, 1-10.
25. Van Soest, P.J., 1963. Use of detergents in the analysis of fibrous feeds. J. Assoc. Off. Anal. Chem. 46, 825-835.
26. Verite, R., Peyraud, J.L., 1989. Protein. The PDI system. In: Jarrige, R. (Ed.), Ruminant Nutrition. INRA, pp. 33-47.
27. Volden, H., Harstad, O.M., 1995. Effect of rumen incubation on the true indigestibility of feed protein in the digestive tract determined by nylon bag techniques. Acta Agric. Scand., Sect A, Anim. Sci. 45, 106-115.
28. Weisbjerg, M.R., Hvelplund, T., Hellberg, S., Olsson, S., Sanne, S., 1996. Effective rumen degradability and intestinal digestibility of individual amino acids in different concentrates determined in situ. Anim. Feed Sci. Technol. 62, 179-180.