Effect of adding fibre and starch degrading enzymes to a barley/wheat based diet on performance and nutrient digestibility in different segments of the small intestine of early weaned pigs

https://doi.org/10.1016/0377-8401(93)90042-IGet rights and content

Abstract

A total of 96 pigs were divided into 12 groups of eight and housed in flat-deck pens for 21 days. A basal diet based on barley (35%), wheat (35%) and soybean meal (22%) was used as control or supplemented with either of two enzyme premixes (M and C), containing β-glucanase, xylanase and amylase. Both premixes contained the same sources of xylanase and amylase, whereas the β-glucanase in premix M was of a different Trichoderma longibrachiatum strain and produced under different conditions than the β-glucanase in premix C. Diets were fed ad libitum during the 3-week period, with weight gain and feed consumption recorded weekly. At the end of the experiment, two pigs from each pen were killed, the small intestine removed and divided into four sections of equal length. Nutrient and fibre component digestibilities were measured in the three lower sections.

Enzyme supplementation did not significantly influence weight gain or feed utilisation of the pigs during the experiment. Dry matter and starch digestibilities in the fourth quarter of the small intestine were improved (P < 0.05) by enzyme M. Both enzyme supplements increased β-glucan digestibility in the third and fourth quarter (P < 0.05). The digestibility of soluble NSP increased significantly (P < 0.05) in the third and fourth quarter due to enzyme supplementation, whereas there was no effect on the total NSP fraction. These results suggest that fibre and starch degrading enzymes are of potential benefit to early weaned pigs fed diets based on barley and wheat.

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