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17 March 2016 Net energy system of feed formulation with or without enzyme supplementation in growing-finishing pigs fed barley-based diets with alternative feed ingredients
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Abstract

The aim of this study was to determine the growth performance and carcass characteristics of growing-finishing pigs fed diets formulated on net energy (NE) basis with or without exogenous enzyme supplementation. Twenty-four pigs with an initial body weight (BW) of 25 kg were randomly allotted one of three treatments; a barley-based control diet formulated on a digestible energy (DE) basis (Diet A), control diet formulated on an NE basis (Diet B), and Diet B multicarbohydrase enzyme (Diet C). Pigs were offered their respective diets in a 3-phase feeding program. Individual pig BW and feed disappearance were monitored once every 2 wk. Pigs were slaughtered when they reached 100 kg BW to determine carcass characteristics. During phase 1, an improvement (P = 0.02) in feed intake was observed in pigs fed Diet C compared with Diet B. In phase 3, pigs fed Diet B showed improvement in daily gain (P = 0.02) and feed efficiency (P = 0.05) compared with Diet A. Overall, when compared with control diet, pigs fed Diet B showed significant improvement in daily gain (P = 0.05) and feed efficiency (P = 0.01). In conclusion, the results indicate a better growth performance with diets formulated using the NE system. Moreover, enzyme supplementation had no effect on the overall performance of pigs.

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D.E. Velayudhan and C.M. Nyachoti "Net energy system of feed formulation with or without enzyme supplementation in growing-finishing pigs fed barley-based diets with alternative feed ingredients," Canadian Journal of Animal Science 96(2), 180-186, (17 March 2016). https://doi.org/10.1139/cjas-2015-0049
Received: 5 March 2015; Accepted: 1 January 2016; Published: 17 March 2016
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