发酵豆粕作为仔猪饲粮主要蛋白源的饲喂效果
发布时间：2018-08-27 12:03
【摘要】：微生物发酵法能够降低豆粕中抗营养因子、增加小肽的含量,提高动物对蛋白质饲料的利用效率,被广泛应用在动物生产中。发酵豆粕在饲粮中的应用效果也越来越受到更多学者的关注,但其效果会受到发酵菌种和工艺的限制,本实验室也对此进行了相关研究,筛选出了适于应用于动物生产的豆粕发酵特异性菌种,但用该菌种发酵的产品在动物生产上的饲喂效果如何还尚未研究。因此,本试验选取24头9.80±0.71 kg,28d断奶、健康状况良好以及遗传背景相同的杜洛克×长白×大白三元杂交仔猪做动物试验,预饲期7天,正式期28天后屠宰。公、母仔猪分别采用随机区组试验设计分为4个处理组后综合,每个处理组6个重复,每个重复1头猪。饲喂常规玉米-豆粕鱼粉型(对照组)、商业发酵豆粕部分取代型(试验Ⅰ组,取代对照组70%的动物性蛋白)、实验室发酵豆粕部分取代型(试验Ⅱ组,取代对照组70%的动物性蛋白)、实验室发酵豆粕完全取代型(试验Ⅲ组,取代对照组100%的动物性蛋白)四种日粮。从生长指标、血液指标、消化指标入手,揭示实验室发酵豆粕具有替代动物性蛋白的功效,探讨高效发酵豆粕对仔猪的饲喂效果,为其在仔猪饲粮中的应用提供技术依据和发展空间。试验结果如下:1、发酵豆粕部分取代动物性蛋白能够提高仔猪平均日增重、日采食量,降低料重比等生长性能指标。提高总蛋白、白蛋白,降低血清尿素氮等血液生化指标。且试验Ⅱ组略优于试验Ⅰ组,但差异不显著(P0.05)。2、干物质和粗蛋白表观消化率各试验组结果次序一致,从高到低的顺序依次为试验Ⅱ组、试验Ⅰ组、对照组、试验Ⅲ组。氮沉积和蛋白质净利用率试验Ⅱ组最高,略高于对照组和试验Ⅰ组,但在统计学上差异不显著(P0.05)。3、消化道内各段(从前到后)蛋白质和AA消化率基本呈现上升趋势,吸收的主要部位在空肠后段和回肠。另外,试验Ⅱ组蛋白质消化率在空肠前段-中段上升幅度最大,AA消化率在空肠中段-后段上升幅度最大。4、酸溶蛋白含量在小肠各段(从前到后)呈现先上升后下降的趋势,试验Ⅱ组在空肠中段最高,显著高于对照组和试验Ⅰ组,分别为7.28%(P0.05)和6.55%(P0.05)。且在空肠中段-回肠下降幅度最大。大分子蛋白含量趋势则反之,试验Ⅱ组在空肠后段最低。试验Ⅲ组相对于其它试验组,大分子蛋白含量偏高。综上所述,发酵豆粕可以70%取代动物性蛋白添加在仔猪饲粮中,且实验室发酵豆粕效果略优于商品发酵豆粕,这一结果可以为今后的仔猪生产降低生产成本,提高了经济效益。然而,从本试验结果来看,100%取代组试验结果并不理想,因此不能够简单的进行完全替代,其中的具体作用机制还有待研究。
[Abstract]:Microbial fermentation can reduce the anti-nutritional factors in soybean meal, increase the content of small peptides and improve the utilization efficiency of animal protein feed. It has been widely used in animal production. More and more scholars pay more and more attention to the application effect of fermented soybean meal in diet, but its effect will be limited by fermentation bacteria and technology. The specific strain of soybean meal fermentation was selected for animal production, but the effect of the fermentation product on animal production has not been studied. Therefore, 24 脳 9.80 卤0.71 kg,28d weaned piglets with good health condition and same genetic background were selected for animal experiment, which were prefed for 7 days and slaughtered after 28 days of formal feeding. The male and female piglets were divided into 4 treatment groups by randomized block design. Each treatment group had 6 replicates and 1 pig per replica. Normal corn-soybean meal fish meal type (control group), commercial fermented soybean meal partially substituted type (experimental group 鈪，
本文编号：2207220
[Abstract]:Microbial fermentation can reduce the anti-nutritional factors in soybean meal, increase the content of small peptides and improve the utilization efficiency of animal protein feed. It has been widely used in animal production. More and more scholars pay more and more attention to the application effect of fermented soybean meal in diet, but its effect will be limited by fermentation bacteria and technology. The specific strain of soybean meal fermentation was selected for animal production, but the effect of the fermentation product on animal production has not been studied. Therefore, 24 脳 9.80 卤0.71 kg,28d weaned piglets with good health condition and same genetic background were selected for animal experiment, which were prefed for 7 days and slaughtered after 28 days of formal feeding. The male and female piglets were divided into 4 treatment groups by randomized block design. Each treatment group had 6 replicates and 1 pig per replica. Normal corn-soybean meal fish meal type (control group), commercial fermented soybean meal partially substituted type (experimental group 鈪，
本文编号：2207220
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