益生菌Lactobacillus plantarum P-8对肉仔鸡屠宰性能、肉品质及营养物质代谢的影响

发布时间：2018-03-04 10:13

本文选题：植物乳杆菌P-8　切入点：肉仔鸡　出处：《内蒙古农业大学》2014年硕士论文　论文类型：学位论文

【摘要】：本试验以科宝-500肉仔鸡为试验动物,以国内系统研究的具有自主知识产权的益生菌L. plantarum P-8为试验菌株,通过投喂科宝-500肉仔鸡与饲喂添加抗生素日粮相对比,从屠宰性能、肉品质及营养物质代谢等方面剖析益生菌L. plantarum P-8替代抗生素的可行性,得到如下结果： 1、运用变性梯度凝胶电泳技术比较研究了不同日龄三个不同组别肉仔鸡肠道菌群差异。结果显示：益生菌组肉仔鸡条带丰度明显优于抗生素组、对照组,且聚类结果显示已按实际分组情况将三组肉仔鸡进行了较为明显的分类。 2、益生菌组较抗生素组、对照组能显著提高肉仔鸡全净膛率、胸肌率(P0.05)；益生菌组、抗生素组较对照组均能显著提高肉仔鸡的屠宰率,且益生菌组的屠宰率比抗生素组提高0.37%(P0.05)。 3、益生菌组较抗生素组和对照组可显著降低肉仔鸡胸肌失水率、剪切力和烹饪损失率及腿肌失水率(P0.05)。 4、益生菌组能显著提高肉仔鸡粗脂肪、总钙代谢率(P0.05);益生菌组、抗生素组均可显著提高总能、粗蛋白、总磷代谢率,且益生菌组比抗生素组提高分别高出0.15%、1.10%、0.23%(P0.05)。综上所述,日粮中添加益生菌L. plantarum P-8较抗生素组可改善肉仔鸡屠宰性能、肉品质及提高肉仔鸡对各类营养物质代谢率,因此通过各项指标可知益生菌L.plantarum P-8有替代饲用抗生素添加于饲料中的潜力。
[Abstract]:In this experiment, Kebao -500 broilers were used as experimental animals, and L.#en0# P-8, a probiotic strain with independent intellectual property rights, which was systematically studied in China, was used as experimental strain. The slaughter performance was compared by feeding Kebao -500 broilers and feeding diets supplemented with antibiotics. The feasibility of substitute antibiotics for probiotics L. plantarum P-8 was analyzed in meat quality and nutrient metabolism. The results were as follows:. 1. Using denaturing gradient gel electrophoresis, the intestinal microflora of three broilers of different ages were compared and studied. The results showed that the band abundance of probiotics group was significantly better than that of antibiotic group and control group. The clustering results showed that three groups of broilers had been classified according to the actual situation. 2, probiotics group was significantly higher than antibiotic group, the control group could significantly increase the broilers' total muzzle rate and breast muscle rate (P0.05), probiotics group and antibiotic group could significantly increase the slaughter rate of broilers, and the slaughtering rate of probiotics group was 0.37% higher than that of antibiotic group (P 0.05). 3. Compared with antibiotic group and control group, probiotics group could significantly reduce the water loss rate of breast muscle, shear force, cooking loss rate and water loss rate of leg muscle in broilers. 4. Probiotic group could significantly increase the crude fat and total calcium metabolism rate (P0.05), and the probiotics group and antibiotic group could significantly increase the total energy, crude protein and total phosphorus metabolism rate, and the probiotics group could significantly increase the total energy, crude protein and total phosphorus metabolism rate, and the probiotics group was higher than the antibiotic group by 0.15% 1.10% 0.23% P0.05, respectively. In conclusion, the addition of probiotics L.#en0# P-8 in diet could improve slaughter performance, meat quality and metabolic rate of all kinds of nutrients in broilers compared with antibiotic group. Therefore, the probiotics L.plantarum P-8 has the potential to be added to feed instead of feeding antibiotics.
【学位授予单位】：内蒙古农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TS251.4

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