Journal
ACTA AGRICULTURAE SCANDINAVICA SECTION A-ANIMAL SCIENCE
Volume 59, Issue 3, Pages 150-160Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/09064700903254281
Keywords
DE; digestibility; fat; fiber; fiberxfat interaction; pig
Categories
Funding
- Hungarian Academy of Science
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The effect of dietary fiber and fat content on energy and nutrient digestibility was evaluated and regression equations were developed to predict dietary digestible energy (DE) content. A total of 125 barrows (39 kg BW) were fed with diets based on five wheat bran (0, 150, 300, 450, and 600 g/kg) and five added fat levels (0, 25, 50, 75, and 100 g/kg) in a 5x5 factorial arrangement. DE intake was adjusted as 2.6 times of the maintenance requirements. Results show that despite the fact that both fiber and fat digestibility are significantly influenced by fiberxfat interaction, digestibility of energy is principally affected by dietary fiber content. The model calculation indicates that DE content of the feed can be more precisely compute, if digestibility of energy is used in diet formulation rather than addition of energy contents of calculated digestible nutrients, so far as the digestibility coefficients of energy and nutrients are derived from regression equations.
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