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Ileal digestibility of amino acids in pigs given a barley-based diet with increasing inclusion of lucerne leaf meal

Published online by Cambridge University Press:  02 September 2010

M. Reverter
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, PO Box 7024, S-750 07 Uppsala, Sweden
J. E. Lindberg
Affiliation:
Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, PO Box 7024, S-750 07 Uppsala, Sweden
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Abstract

Ileal digestibility of amino acids in barley-based diets with increasing inclusion of lucerne leaf meal (LLM; 0, 50, 100 and 200 g/kg) was studied in a change-over experiment with post-valve T-caecum cannulated growing pigs. The apparent Heal digestibility of crude protein, as well as of most of the essential (EAA) and non-essential amino acids (NEAA) was not significantly affected by the dietary inclusion of LLM. The exceptions were cystine, methionine, phenylalanine, glutamic acid and serine, all of which showed a significant (P < 0·05) reduction in apparent Heal digestibility with increasing inclusion of LLM. In contrast, the calculated true Heal digestibility of all EAA (with the exception of arginine and lysine) and the NEAA glutamic acid and serine were significantly (P < 0·05) reduced with the inclusion of LLM. Associated with an increased crude protein intake, there was a significant (P < 0·05) increase in the amount of absorbed EAA when the proportion of LLM was increased in the diet. With increasing proportion of fibre in the diet, there was a significant (P < 0·05) increase in the Heal flow of glucosamine.

It can be concluded from the present data that the inclusion of LLM in a barley-based diet for growing pigs will result in an improvement in the absorbed amino-acid profile due to a significant increase in the absorption of all of the EAA.

Type
Research Article
Copyright
Copyright © British Society of Animal Science 1998

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