添加酶制剂和膨化处理对生长猪饲粮中脱脂米糠概略养分和矿物质表观消化率的影响

发布时间：2018-10-21 08:00

【摘要】：旨在研究添加酶制剂和膨化处理对生长猪饲粮中脱脂米糠概略养分和矿物质在回肠末端及全消化道表观消化率的影响。试验选取4头在回肠末端安装T型瘘管的杜×长×大三元杂交阉公猪,初始体重为(18±1.5)kg。饲喂按2×2因子设计的脱脂米糠、脱脂米糠+酶制剂、膨化脱脂米糠和膨化脱脂米糠+酶制剂4种饲粮,按4×4拉丁方试验安排分4个周期进行消化试验,每个周期10 d。结果表明:(1)在回肠末端,添加酶制剂显著提高了干物质、总能、Fe和Zn的表观消化率(P0.05),且极显著地提高了粗蛋白、灰分、植酸磷、P和Ca的表观消化率(P0.01);膨化处理显著提高了Fe的表观消化率(P0.05),且极显著地提高了植酸磷的表观消化率(P0.01),但显著降低了干物质、有机物和粗脂肪表观消化率(P0.05),且极显著地降低了总能表观消化率(P0.01)。(2)在全消化道,添加酶制剂显著提高了Cu的表观消化率(P0.05),且极显著地提高了灰分、P、Ca和Zn的表观消化率(P0.01);膨化处理显著降低了粗蛋白和粗脂肪的表观消化率(P0.05),且极显著地降低了干物质、有机物、总能、P和Ca的表观消化率(P0.01)。综上所述,生长猪脱脂米糠饲粮中添加酶制剂可以改善养分和矿物质消化率,尤其是在回肠之前;而除矿物质外,膨化处理对米糠饲粮的大多数概略养分消化率有负面影响,两种处理方法对米糠养分的消化利用未显示出协同效果。
[Abstract]:The aim of this study was to study the effects of enzyme preparation and expansion treatment on the apparent digestibility of defatted rice bran in the diets of growing pigs at the end of ileum and the whole digestive tract. In this experiment, 4 脳 10 脳 10 脳 3 D crossbred boars with T-type fistula at the end of ileum were selected. The initial body weight was (18 卤1. 5) kg.. Four diets were fed with defatted rice bran, defatted rice bran enzyme, expanded defatted rice bran and expanded defatted rice bran enzyme designed according to 2 脳 2 factor. The results showed that: (1) at the end of ileum, the total energy, the apparent digestibility of Fe and Zn, and the crude protein and ash content were significantly increased by adding enzyme. The apparent digestibility of phosphorus phytate, P and Ca (P0.01), the apparent digestibility of Fe (P0.05) and the apparent digestibility of phosphorus phytate (P0.01) were significantly increased (P0.01), but the dry matter decreased significantly. The apparent digestibility of organic matter and crude fat (P0.05) significantly decreased the apparent digestibility of total energy (P0.01). (2) in the whole digestive tract. The apparent digestibility of Cu was significantly increased by adding enzyme (P0.05), and the apparent digestibility of Zn and Ca was significantly increased (P0.01), the apparent digestibility of crude protein and crude fat was significantly decreased (P0.05), and that of dry matter and organic matter was significantly decreased by expanding treatment. Total energy, apparent digestibility of P and Ca (P0.01). In conclusion, the addition of enzyme to the diet of skim rice bran in growing pigs can improve the digestibility of nutrients and minerals, especially before the ileum, and, with the exception of minerals, the expanded treatment has a negative effect on the digestibility of most of the approximate nutrients in rice bran diets. The two treatments showed no synergistic effect on nutrient digestion and utilization of rice bran.
【作者单位】：南京农业大学动物科技学院;
【基金】：国家自然科学基金项目(31172237)
【分类号】：S828.5

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