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Ileal digestibility of nutrients and amino acids in low quality soybean meal sources treated with β-mannanase for growing pigs

Published online by Cambridge University Press:  09 February 2016

S. D. Upadhaya
Affiliation:
Department of Animal Resource and Science, Dankook University, Anseodong, Cheonan, Choongnam 330-714, Korea
J. W. Park
Affiliation:
Department of Animal Resource and Science, Dankook University, Anseodong, Cheonan, Choongnam 330-714, Korea
J. H. Lee
Affiliation:
CTC Bio Inc., Seoul, Korea
I. H. Kim*
Affiliation:
Department of Animal Resource and Science, Dankook University, Anseodong, Cheonan, Choongnam 330-714, Korea
*
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Abstract

Apparent ileal digestibility (AID) of energy, dry matter (DM), nitrogen (N) and amino acids and standardized ileal digestibility (SID) of amino acids in low quality soybean meals with different CP concentration (SBM 44% CP and SBM 48% CP) with or without 400 U β-mannanase/kg supplementation were evaluated in 20 cannulated barrows ((Landrace×Yorkshire)×Duroc) with an average BW of 25.08±3.42 kg. A N-free diet was used to determine basal endogenous losses of amino acids. The supplementation of β-mannanase improved (P<0.05) AID of DM compared with non-supplemented diet. However, enzyme supplementation did not improve (P>0.05) AID of N and energy. The type of SBM (SBM 44% CP v. SBM 48% CP) had no effect on AID of DM, N and energy. β-mannanase improved (P<0.05) AID of sum of essential amino acids, arginine, histidine, lysine, valine and glycine. The SID of lysine was higher (P<0.05) in enzyme supplemented than in non-supplemented diets. Larger AID and SID of threonine and proline (P<0.05) were observed in SBM 48% CP than in SBM 44% CP. In conclusion, the supplementation of enzyme improved AID of arginine, histidine, lysine, valine and glycine, but it did not cause marked difference in SID of these amino acids except for lysine. The low nutrient digestibility of the SBM sources used in the present experiment might have favoured the positive effect of β-mannanase supplementation.

Type
Research Article
Copyright
© The Animal Consortium 2016 

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