Supplementation of multi-carbohydrase enzyme cocktails increase nutrient digestibility of fibrous diets in grower pigs, in particular, dietary non-starch polysaccharides (NSP); while NSP degrading enzymes are extensively used in sow diets there is little data characterizing NSP enzyme effect in sow diets. The objective of this study was to evaluate the effect of carbohydrase mixture (CM) supplementation on apparent total tract digestibility (ATTD) of energy and nutrients in diets with low or high fiber content fed to pregnant sows. A total of 45 gestating sows (parity 0 to 5; BW 187 ± 28 kg) were blocked by parity in a 2 x 3 factorial arrangement to either a high (HF; 17.5% NDF) or low fiber (LF; 13% NDF) diet and 1 of 3 levels of CM supplementation (0, 0.08, and 0.10%). Sows were fed once daily at 2.2 kg/d. Fecal and urine samples were collected for 4 d following a 10-day adaption period. Dietary CM supplementation to gestating sow diets increased ATTD of dry matter, energy, crude fat, and fiber (NDF and ADF; P < 0.05) with tendencies (P < 0.10) for crude fiber. Digestibility of calcium, phosphorus, NSPs along with ME and DE contents of the diets were not affected (P > 0.05). Dietary CM supplementation to the LF diet, but not the HF diet, increased the ATTD of NDF (P = 0.02). Inclusion at 0.08% did not differ from the 0.1% inclusion for effects on ATTD (Table 1). Irrespective of CM supplementation, sows fed the HF diet had improved digestibility of total NSP, xylose, glucose, and uronic acids (P < 0.05) with a tendency for galactose (P = 0.08) as well as increased DE and ME content (P < 0.01). Inclusion of CM in high fibrous gestating sow diets can be utilized to increase ATTD of nutrients and energy.

中文翻译：

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PSVII-6 添加碳水化合物酶混合物和纤维水平对妊娠母猪日粮中营养素表观总消化道消化率的影响

补充多糖酶混合物可提高生长猪纤维日粮的营养消化率，特别是日粮非淀粉多糖 (NSP)；虽然 NSP 降解酶在母猪日粮中被广泛使用，但在母猪日粮中表征 NSP 酶效应的数据很少。本研究的目的是评估添加糖酶混合物 (CM) 对饲喂妊娠母猪的低或高纤维日粮中能量和营养物质的表观全消化道消化率 (ATTD) 的影响。共有 45 头妊娠母猪（第 0 至 5 胎；体重 187 ± 28 公斤）被胎次阻断，以 2 x 3 因子排列为高纤维（HF；17.5% NDF）或低纤维（LF；13% NDF）饮食和 3 种 CM 补充水平中的 1 种（0、0.08 和 0.10%）。母猪每天饲喂一次，饲喂量为 2.2 公斤/天。在 10 天的适应期后，收集了 4 天的粪便和尿液样本。妊娠母猪日粮中添加 CM 可增加干物质、能量、粗脂肪和纤维（NDF 和 ADF；P < 0.05）的 ATTD，而粗纤维有趋势（P < 0.10）。日粮中钙、磷、NSPs 以及 ME 和 DE 含量的消化率没有受到影响（P > 0.05）。向 LF 饮食而非 HF 饮食添加膳食 CM 增加了 NDF 的 ATTD（P = 0.02）。0.08% 的纳入与 0.1% 的纳入对 ATTD 的影响没有区别（表 1）。无论添加何种 CM，饲喂 HF 日粮的母猪对总 NSP、木糖、葡萄糖和糖醛酸的消化率都有所提高（P < 0.05），并且倾向于半乳糖（P = 0.08）以及增加的 DE 和 ME 含量（P ＜0.01)。