Energy sparing effect of non-starch polysaccharide degrading enzymes blend in laying hens fed either corn-SBM or wheat-SBM based diets

An 8wk (69 to 77wk of age) trial was conducted to evaluate the energy sparing effect of non-starch polysaccharide (NSP) multi-enzyme blend (2000U endo-xylanase, 75U endo-beta-glucanase and 25U alpha-galactosidase/g of product; CIBENZA® CSM feed additive) in laying hens fed iso-nitrogenous corn-SBM and wheat-SBM based diets with varied AMEn levels. A total of 216 Hy-Line W-36 laying hens were assigned to 6 treatments with 36 cages/treatment and 1 hen/cage. The data were analyzed using both 1-way ANOVA (for all 6 treatments) and 2x2 factorial design with 2 diets (corn-SBM vs. wheat-SBM) and 2 energy levels (0 and 80kcal/kg diet reduction). The treatments consisted of: Corn-SBM diet, T1 (2820kcal); T1 less 80kcal, T2; T2+0.05 NSPases blend, T3; Wheat-SBM diet, T4 (2820kcal); T4 less 80kcal, T5; T5+0.05% NSPases blend, T6. Measurements included were weight gain, cumulative (c) feed intake (FI), cFCR on egg mass, egg production, egg weight and viscosity (jejunal and ileal). Reduction of 80kcal reduced (P<0.05) weight gain in wheat based diets (T5) compared to T4, while supplementation of NSPases (T6) brought back the performance that was similar (P>0.05) to +ve control (T4). FI was reduced and FCR on egg mass improved (P<0.05) in hens fed diets supplemented with NSPases (T3 and T6) compared to their respective –ve controls (T2 and T5) and further these variables were either the same (P>0.05) or better than their respective +ve controls (T1 and T4). Viscosity for T6 was reduced (P<0.05) compared to T4 and T5 and was similar to T1, T2, and T3 (P>0.05). Factorial output indicated an improvement in weight gain (by 28g), FCR (by 13 points) and FI (5g less) for hens fed NSPases compared to non-NSPases fed groups (enzyme effect, P<0.05). Supplementing wheat based diets increased weight gain by 26g, reduced FCR efficiency by 12 points, and increased FI by 5g/d compared to hens fed corn based diets (diet effect, P<0.05). In summary, NSP enzymes could spare 80kcal/kg diet in laying hens without compromising production and FCR irrespective of diets tested while reducing intestinal viscosity in wheat based diets.

Key words: layer, corn, wheat, NSPase

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Energy sparing effect of non-starch polysaccharide degrading enzymes blend in laying hens fed either corn-SBM or wheat-SBM based diets

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