ArticleJournal of animal science2025
Effects of multienzyme supplementation on energy and nutrient digestibility in various feed ingredients for pregnant gilts.
Article in Journal of animal science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The utilization of exogenous fiber-degrading enzymes in commercial swine diets is a strategy to increase the nutrient and energy density of poorly digestible ingredients. In a prior set of studies, dietary multienzyme blend (MEblend) supplementation increased the apparent total tract digestibility (ATTD) of nutrients, non-starch polysaccharides, and energy in complete high-fibrous gestation diets by 6% when fed to gestating sows. The current study aimed to determine the effects of MEblend (containing xylanase, β-glucanase, cellulase, amylase, protease, pectinase, and invertase activities) supplementation on ATTD of energy and nutrients of individual feedstuffs commonly used in gestating sow diets across major pork-producing regions worldwide, which differ in their fibrous components. Twenty-seven gilts (initial body weight 176 ± 6.6 kg), in a crossover design with 4 periods (periods 1, 2, 3, and 4 from days 41 to 55, 56 to 70, 71 to 85, and 86 to 100 of gestation, respectively), were allocated to one of 7 diets (with or without MEblend supplementation at 0.1% inclusion; 7 to 8 observations per treatment) to determine the ATTD of energy and neutral detergent fiber. Three diets contained corn, wheat, and sorghum as the sole source of energy. In the other diets, soybean meal (SBM), field peas (FP), canola meal (CM), and sugar beet pulp (SBP) each replaced 25% of the corn in the corn diet to determine the energy value of individual feedstuffs. Data were analyzed using a Student's t-test to evaluate the effect of enzyme supplementation on these feedstuffs. The MEblend increased the metabolizable and net energy of corn (P = 0.10) and wheat (P < 0.01) by 2% and 3%, respectively. The energy content of sorghum was not impacted by MEblend. Furthermore, a 6%, 4%, and 25% increase was observed in metabolizable and net energy of SBM, FP, and CM, respectively (P ≤ 0.05). The energy value in SBP was not affected by MEblend supplementation. In conclusion, supplementing diets with a multienzyme blend increased the energy content of corn, wheat, soybean meal, FP, and CM fed to gestating sows by approximately 2% to 25%, depending on the feedstuffs. The energy value of sorghum and SBP was not affected by the multienzyme blend. This should be considered when formulating fibrous diets for gestating sows to increase nutrient utilization of feedstuffs.
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