Fractionation and In Vitro Degradation Kinetics of Extrusa Nitrogenous Compounds from Grazing Cattle;Fracionamento e Cinética de Degradação In Vitro dos Compostos Nitrogenados da Extrusa de Bovinos a Pasto

Revista Brasileira de Zootecnia

Volumn 29, Issue 3, 2000, Pages 880-888

  Vieira, Ricardo Augusto Mendonça ^a,b   Pereira, José Carlos ^c   Malafaia, Pedro Antonio Muniz ^d   De Queiroz, Augusto César ^c   Gonçalves, André Luigi ^c  

^a UEG   (Brazil)

^b CCA   (Brazil)

^c FEDERAL UNIVERSITY OF VIÇOSA   (Brazil)

^d FEDERAL RURAL UNIVERSITY OF RIO DE JANEIRO   (Brazil)

Author keywords

Nitrogenous compounds; Ruminants; Tropical pastures

Indexed keywords

EID: 0347698533     PISSN: 01004859     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (36)

1. AGRICULTURAL AND FOOD RESEARCH COUNCIL -AFRC. 1993. Energy and protein requirements of ruminants. Cambridge: CAB International. 159p.
2. BROCK, T.D., MADIGAN, M.T., MARTINKO, J.M. et al. 1994. Biology of Microorganisms. 7 ed. Englewood Cliffs: Prentice-Hall International. 909p.
3. BRODERICK, G.A. Methodology for the determining ruminal degradability of feed proteins In: SIMPÓSIO INTERNACIONAL SOBRE EXIGÊNCIAS NUTRICIONAIS DE RUMINANTES, Viçosa, 1995. Anais... Viçosa: DZO, 1995. p.139-176.
4. CONE, J.W., VAN GELDER, A.H., STEG, A. et al. 1996. Prediction of in situ rumen escape protein from in vitro incubation with protease from Streptomyces griseus. J. Sci. Food Agric., 72:120-126.
5. DIOGO, J.M.S. Composição botânica e valor nutritivo da dieta selecionada por novilhos em pastagem natural de Viçosa-MG. Viçosa, MG: UFV, 1995. 108p. Tese (Doutorado em Zootecnia) - Universidade Federal de Viçosa, 1995.
6. FOX, D.G., SNIFFEN, C.J., O'CONNOR, J.D. et al. 1992. A net carbohydrate and protein system for evaluating cattle diets III. Cattle requirements and diet adequacy. J. Anim. Sci., 70(12):3578-3596.
7. LONDOÑO-HERNANDÉZ, F.I., VIEIRA, R.A.M., SANCHEZ, L.M.B. et al. 1998. Efeito do processamento da amostra sobre o desaparecimento ruminal e as digestibilidades intestinal e total da proteína de duas gramíneas. R. Bras. Zootec., 27(4):783-789.
8. KOHN, R.A., ALLEN, M.S. 1995. In vitro protein degradation of feeds using concentrated enzymes extracted from rumen contents. Anim. Feed Sci. Technol., 52:15-28.
9. KRISHNAMOORTHY, U., MUSCATO, T.V., SNIFFEN, C.J. et al. 1982. Nitrogen fractions in selected feedstuffs. J. Dairy Sci., 65(2):217-225.
10. KRISHNAMOORTHY, U., SNIFFEN, C.J., STERN, M.D. et al. 1983. Evaluation of a mathematical model of rumen digestion and an in vitro simulation of rumen proteolysis to estimate the rumen-undegraded nitrogen content of feedstuffs. Brit. J. Nutr., 50(2):555-568.
11. LENG, R.A. 1993. Quantitative ruminant nutrition: a green science. Austr. J. Agric. Res., 44(1):363-380.
12. LICITRA, G., HERNANDEZ, T.M., VAN SOEST, P.J. 1996. Standardization of procedures for nitrogen fractionation of ruminant feeds. Anim. Feed Sci. Technol., 57:347-358.
13. LIMA, J.A., NASCIMENTO JÚNIOR, D., PEREIRA, J.C. et al. 1998. Seletividade por bovinos em pastagem natural. 1. Composição botânica. R. Bras. Zootec., 27(3):434-443.
14. MADSEN, J., HVELPLUND, T. 1994. Prediction of in situ protein degradability in the rumen: results of an european ringtest. Lvstck. Prod. Sci., 39(1):201-212.
15. MALAFAIA, P.A.M., VIEIRA, R.A.M. Técnicas de determinação e avaliação dos compostos nitrogenados em alimentos para ruminantes In: SIMPÓSIO INTERNACIONAL DE DIGESTIBILIDADE EM RUMINANTES, Lavras, 1997. Anais...Lavras: FAEPE, 1997. p.29-54.
16. MALAFAIA, P.A.M., VALADARES FILHO, S.C., VIEIRA, R.A.M. et al. 1997. Determinação e cinética ruminal das frações protéicas de alguns alimentos para ruminantes. R. Bras. Zootec., 26(6):1243-1251.
17. MAYNARD, L.A., LOOSLI, J.K., HINTZ, H.F. et al. 1984. Nutrição animal. 3.ed. Rio de Janeiro: Livraria Freitas Bastos S.A. 726p.
18. MINSON, D.J., STOBBS, T.H., HEGARTY, M.P. et al. 1976. Measuring the nutritive value of pasture plants. In: SHAW, N.H., BRYAN, W.W. (Eds.) Tropical pasture research. principles and methods. Hurley: CAB International, p.308-337.
19. NOCEK, J.E. 1988. In situ and other methods to estimate ruminal protein and energy digestibility: a review. J. Dairy Sci., 71(8):2051-2069.
20. NOCEK, J.E., RUSSELL, J.B. 1988. Protein and energy as an integrated system. Relationship of ruminal protein and carbohydrate availability to microbial synthesis and milk production. J. Dairy Sci., 71(8):2070-2107.
21. NATIONAL RESEARCH COUNCIL - NRC. 1996. Nutrients requirements of beef cattle. 7.ed. Washington, DC: National Academy Press. 242p.
22. O'CONNOR, J.D., SNIFFEN, C.J., FOX, D.G. et al. 1993. A net carbohydrate and protein system for evaluating cattle diets: IV. Predicting amino acid adequacy. J. Anim. Sci., 71(5):1298-1311.
23. POPPI, D.P., McLENNAN, S.R. 1995. Protein and energy utilization by ruminants at pasture. J. Anim. Sci., 73(1):278-290.
24. REZENDE, S.B, REZENDE, M., GALLOWAY, H.M. 1972. Crono-toposequência de solos em Viçosa, Minas Gerais. R. Ceres, 19(103):167-181.
25. RUSSELL, J.B., O'CONNOR, J.D., FOX, D.G. et al. 1992. A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation. J. Anim. Sci., 70(12):3551-3561.
26. SEARLE, S.R. 1971. Linear models. New York: John Wiley & Sons. 532p.
27. SNIFFEN, C.J., O'CONNOR, J.D., VAN SOEST, P.J. et al. 1992. A net carbohydrate and protein system for evaluating cattle diets: II. Carbohydrate and protein availability. J. Anim. Sci., 70(12):3562-3577.
28. SULTAN, J.I., FIRKINS, J.L., WEISS, W.P. et al. 1992. Effects of energy level and protein source on nitrogen kinetics in steers fed wheat straw-based diets. J. Anim. Sci., 70(12):3916-3921.
29. TOURE, S.F., MICHALET-DOREAU, B. 1995. Nitrogen partition in cell structures of tropical browse plants compared with temperate forages: influence on their in situ degradation pattern. Anim. Feed Sci. Technol., 51:65-72.
30. UDÉN, P., ROUNSAVILLE, T.R., WIGGANS, G.R. et al. 1982. The measurement of liquid and solid digesta retention in ruminants, equines and rabits given timothy (Phleum pratense) hay. Br. J. Nutr., 48(2):329-339.
31. VAN SOEST, P.J., ROBERTSON, J.B., LEWIS, B.A. 1991. Methods for dietary fiber, neutral detergent fiber, and nonstarch polyssacharides in relation to animal nutrition. J. Dairy Sci., 74(10):3583-3597.
32. VAN SOEST, P.J. 1994. Nutritional ecology of the ruminant. 2.ed. Ithaca: Cornell University Press. 476p.
33. VIEIRA, R.A.M., PEREIRA, J.C., MALAFAIA, P.A.M. et al. 1997a. Application of non-linear models in the description of in situ degradation profiles of the elephant-grass (Pennisetum purpureum, Schum.). Anim. Feed Sci. Technol., 66:197-210.
34. VIEIRA, R.A.M., PEREIRA, J.C., MALAFAIA, P.A.M. et al. 1997b. The influence of elephant-grass (Pennisetum purpureum Schum., Mineiro variety) growth on the nutrient kinetics in the rumen. Anim. Feed Sci. Technol., 67:151-161.
35. VIEIRA, R.A.M., PEREIRA, J.C., MALAFAIA, P.A.M. et al. 2000a. Fracionamento dos carboidratos e cinética de degradação in vitro da fibra em detergente neutro da extrusa de bovinos a pasto. Rev. bras. zootec., 29(3):889-897.
36. VIEIRA, R.A.M., PEREIRA, J.C., MALAFAIA, P.A.M. et al. 2000b. Simulação da dinâmica de nutrientes no trato gastrintestinal: aplicação e validação de um modelo matemático para bovinos a pasto. Rev. bras. zootec., 29(3):898-909.