果寡糖对宁乡仔猪生长影响的研究

发布时间：2018-10-14 13:45

【摘要】：本研究通过两个试验探索果寡糖(FOS)对宁乡断奶仔猪生长性能和肠道发育的影响,确定果寡糖的适宜添加水平；同时探讨果寡糖替代抗生素来改善断奶仔猪的性能。试验选用72头胎次相近、健康的(30±1)日龄宁乡仔猪,随机分为4个处理组,每处理组设3个重复,每重复为1栏(6头猪),分别饲喂不同水平的果寡糖日粮(0、0.2%、0.4%、0.6%)。试验结果表明：日粮中添加0.4%果寡糖显著提高了日增重(P0.05),降低了腹泻率(P0.05),添加0.4%果寡糖还显著提高平均日采食量(P0.05)。此外,与对照组比较,0.4%的果寡糖组高密度脂蛋白含量显著高于对照组(P0.05)。在前一试验的基础上,选择90头胎次相近、健康的(30±1)日龄杜断奶宁乡仔猪,每处理组设5个重复,每重复为1栏(6头猪),分别饲喂无抗日粮、抗生素和果寡糖日粮。试验结果表明,日粮中添加果寡糖和抗生素都显著提高断奶仔猪日增重,降低料肉比和腹泻率；果寡糖添加于饲料能显著提高日采食量；果寡糖和粘杆菌素均能显著提高断奶仔猪血糖含量,并分别提高仔猪血清总蛋白水平10%和88%。果寡糖和粘杆菌素均显著提高仔猪血清尿素氮含量。综合2个试验结果得出：①断奶宁乡仔猪日粮中添加0.4%的果寡糖效果最佳。②断奶宁乡仔猪日粮中添加0.4%的果寡糖可有效替代粘杆菌素。
[Abstract]:Two experiments were conducted to explore the effects of fructose (FOS) on growth performance and intestinal development of weaned piglets in Ningxiang, and to determine the appropriate level of fructose supplementation and to improve the performance of weaned piglets by substituting fructooligosaccharides for antibiotics. 72 healthy Ningxiang piglets (30 卤1) days old were randomly divided into 4 treatment groups, each group was divided into 3 replicas (6 pigs per repeat) and fed with different levels of fructose diet (0 0. 2 + 0. 4 ~ 0. 6%). The results showed that the addition of 0.4% fructooligosaccharides significantly increased the daily gain (P0.05), decreased the diarrhea rate (P0.05), and significantly increased the average daily intake (P0.05) when 0.4% fructooligosaccharide was added to the diet. In addition, compared with the control group, 0.4% fructooligosaccharide group had significantly higher HDL content than the control group (P0.05). On the basis of the previous experiment, 90 healthy DU weanling Ningxiang piglets of the same number of times were selected. The piglets in each treatment group were divided into 5 replicates and 1 column (6 pigs). The piglets were fed with non-resistance diet, antibiotics and fructose-oligosaccharide diet respectively. The results showed that the daily gain of weaned piglets was significantly increased by adding fructooligosaccharides and antibiotics, and the feed / meat ratio and diarrhea rate were decreased, and the daily feed intake was significantly increased by adding fructooligosaccharides to feed. Both fructooligosaccharides and myxoflavins could significantly increase the blood glucose content of weaned piglets and increase the serum total protein levels by 10% and 88%, respectively. Both fructooligosaccharides and myxoflavins significantly increased serum urea nitrogen content in piglets. The results showed that: (1) adding 0.4% fructooligosaccharides to the diet of weanling Ningxiang piglets was the best; (2) adding 0.4% fructooligosaccharide to the diet of weanling Ningxiang piglets could effectively replace myxobacterin.
【学位授予单位】：湖南农业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：S828.5

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