Abstract
Abstract Plant-based dietary ingredients contain non-starch polysaccharides (NSP) fibers. Both soluble and insoluble NSP fibers are anti-nutritional factors for monogastrics that limit intestinal absorption and digestion of dietary nutrients. Increased digesta viscosity also occurs, which results in satiety and potential health issues. AveMix XG 10, containing high endo-1,4-β-xylanase and endo-1,3(4)-β-glucanase activity, hydrolyzes NSP fibers resulting in increased nutrient availability and digestibility. Therefore, it was hypothesized that AveMix XG 10 enables gain of some extra net energy (NE) content from piglet diets, optimizing the cost of live-weight growth. A 47-day trial was conducted with 3-week old weaned piglets (6.0 kg) allocated to three groups: control (CON), low energy (-56 kcal/kg feed; LE), and low energy + enzyme (LE+E). All groups had 13 pens of 28 pigs (n=364) and received wheat and corn mix based diets that had a similar NSP fiber content (11.4 %). Overall, CON diets had greater NE (2,456 kcal/kg feed) relative to the LE and LE+E groups (2,400 kcal/kg feed). The diet of the LE+E group was supplemented with AveMix XG 10 (Palital Feed Additives B.V.) at 100 g/T. For each pen the daily feed intake, weekly weight, diarrhea index and mortality were recorded. Compared with both CON and LE, LE+E significantly increased average daily gain (ADG) and average daily feed intake (ADFI) during weeks 4-7 and overall, and also significantly increased final weight (Table 1). During weeks 1-3, ADG and ADFI did not differ between CON and LE+E groups, and the LE+E group was significantly greater than LE. Overall, LE detrimentally increased the feed conversion ratio (FCR) compared with CON; however, during weeks 4-7 the LE+E had similar FCR compared with CON. No significant effects were observed on mortality or diarrhea index. In conclusion, AveMix XG 10 improved piglet performance when dietary NE content is decreased.
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