Estimation of Rumen Degradability of Soy Pass in Comparison with Soybean Meal by Using Nylon Bag (<I>in situ</I>) Technique
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Published:
Oct 16, 2020
Keywords:
Soybean meal Soy Pass Protein degradability
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Abstract
The estimation of rumen degradability of Soy Pass (SP) in comparison with soybean meal (SBM) and 3 concentrate mixtures (KFA, KFB and KFC) by using Nylon Bag (in situ) Technique was conducted with 3 fistulated Holstein Friesian cows. Dry matter (DM) degradation of all tested diets at 2, 4 and 48 h of incubation times was not significant difference (p>0.05), but at 8, 16 and 24 h. of incubation times DM degradation of Soy Pass was significant lower (p<0.05) than other tested diets. By protein degradation of SP followed the same trend at 16 and 24 h of incubation times (p<0,05). The estimated effective protein degradation rate of SP at the outflow rates from 4 percent per h and over was clearly lower than that of SBM.
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References
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Satter, L.D. 1986. Protein supply from undegraded dietary protein. J. Dairy Sci. 69(10): 2734-2749.
Crooker, B.A., J.H., Clark, R.D., Shanks and E.E., Hartfield. 1986. Effects of ruminal exposure on the amino acid profile of heated and formaldehyde-treated soybean meal. J.Dairy Sci. 69 (10): 2648-2657
Kaufmann, W, and W., Luepping. 1978. Fortschritte “geschuetzte Protein” -ein Kurzbericht. Kraftfutter 10: 524-528.
Madsen, J. and T., Hvelplund. 1994. Prediction of in situ protein degradability in the rumen. Results of a European ringtest. Livest. Prod Sci. 39: 201-212
Mehrez, A.Z. and E.R. Ø rskov. 1977. A study of the artificial fibre bag technique for determining the digestibility of feeds in the rumen. J. Agric. Sci., Camb., 88: 645-650.
Ørskov, E.R. and I., McDonald. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted acording to rate of passage J. Agric. Sci, Camb., 92: 499- 503.
Ørskov, E.R. and E.L. Miller, 1988. Protein evaluation in ruminants. In “Feed Science ". World Animal Science, B4, ed. E.R., rskov., Elsevier Science Publishers B.V., PP 103-127
Ørskov, E.R., I., McDonald and M., Hughes-Jones. 1980. Degradability of protein supplements and utilization of undegraded protein by high-producing dairy cows. In “Recent Advances in Animal Nutrition”, eds. W., Haresign and D., Lewis. Butterworths, London, pp 85-98
Satter, L.D. 1986. Protein supply from undegraded dietary protein. J. Dairy Sci. 69(10): 2734-2749.
