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Characterisation and evaluation of a commercial enzyme for improving the nutritive value of ruminant feeds

  • D. Colombatto (a1) (a2), M. K. Bhat (a2), F. L. Mould (a1) and E. Owen (a1)

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Feed enzymes for ruminants have received considerable attention recently, because of their potential to improve animal performance. However, the commercial preparations available are generally mixtures and are poorly characterised. Furthermore, their role in improving the nutritive value of ruminant feeds is not well understood. Previous work with a commercial enzyme applied at ensiling of maize stover showed a significant decrease in cell wall contents (Altaf et al., 1997). The present study evaluated the enzyme used by Altaf et al. (1997) in terms of a) main enzyme activities; b) ability to hydrolyse feeds at three different pHs and c) HPLC analysis of the products released.

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Altaf, U. R.; Owen, E. and Phipps, R. H. 1997. Effect of freezing on the nutritive value of untreated or enzyme-treated maize stover silages. Proceedings of the British Society of Animal Science, p.73.
Bailey, M. J.; Biely, P. and Poutanen, K. 1992. Interlaboratory testing of methods for assay of xylanase activity. Journal of Biotechnology, 23: 257270.
Wood, T. and Bhat, M. K. 1988. Methods for measuring cellulase activities. Methods in Enzymology, 160: 87112.

Characterisation and evaluation of a commercial enzyme for improving the nutritive value of ruminant feeds

  • D. Colombatto (a1) (a2), M. K. Bhat (a2), F. L. Mould (a1) and E. Owen (a1)

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