不同蛋白源低蛋白日粮对肥育猪生长性能、氮平衡及小肠氨基酸消化规律的影响

发布时间：2018-11-13 19:16

【摘要】：本试验在日粮必需氨基酸平衡的低蛋白(11%)水平下,研究日粮不同蛋白源对肥育猪生长性能、氮平衡及小肠氨基酸消化规律的影响。选取48头体重(58.65±3.71)kg杜×长×大杂交肥育猪,随机分到4个试验组,每个组设4个重复。对照组饲喂正常蛋白水平(15%CP)日粮(SBM15),3个处理组饲喂低蛋白水平(11%CP)日粮,分别为豆粕组(SBM11)、豆粕+棉籽粕+玉米胚芽粕组(SCCM11)、棉籽粕+玉米胚芽粕组(CCM11)。按照标准回肠可消化氨基酸需要量添加合成氨基酸至日粮必需氨基酸平衡。结果表明:SBM11和SCCM11组对肥育猪生长性能影响不显著(P0.05),但显著提高了氮表观消化率和氮沉积率(P0.05),CCM11组显著降低了肥育猪的生长性能(P0.05),3个试验组均显著降低了粪氮、尿氮的排放(P0.05);SCCM11组具有较好的肠道内氨基酸释放趋势(P0.1)。因此,饲喂SCCM11组日粮可以保证肥育猪正常的生长性能,有利于蛋白质的平稳降解,提高了氮表观消化率及氮沉积率,减少氮排放。
[Abstract]:The effects of dietary protein sources on growth performance, nitrogen balance and small intestine amino acid digestion of fattening pigs were studied under the low protein (11%) level of essential amino acid balance in diet. 48 (58.65 卤3.71) kg 脳 long 脳 large crossbred fattening pigs were randomly divided into 4 experimental groups with 4 replicates in each group. The control group was fed with normal protein level (15%CP) diet (SBM15), the three treatment groups were fed with low protein level (11%CP) diet, namely soybean meal group (SBM11), soybean meal cottonseed meal corn germ meal group (SCCM11). Cottonseed meal, corn germ meal group (CCM11). According to the standard ileal digestible amino acid requirement, add synthetic amino acid to the balance of essential amino acid in diet. The results showed that SBM11 and SCCM11 groups had no significant effect on the growth performance of fattening pigs (P0.05), but significantly increased the apparent nitrogen digestibility and nitrogen deposition rate (P0.05). CCM11 group significantly decreased the growth performance of fattening pigs (P0.05). The fecal nitrogen and urine nitrogen emission were significantly decreased in the three experimental groups (P0.05). In SCCM11 group, there was a good tendency of amino acid release (P0. 1). Therefore, feeding SCCM11 diet can ensure the normal growth performance of fattening pigs, which is conducive to the stable degradation of protein, increase the apparent nitrogen digestibility and nitrogen deposition rate, and reduce nitrogen emissions.
【作者单位】：吉林农业大学动物科学技术学院;吉林省动物营养与饲料科学重点实验室;
【基金】：国家重点基础研究发展计划(973计划)(2013CB127306)
【分类号】：S828.5

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