富硒乳酸菌中药制剂对育肥猪生长性能和肠道菌群的影响

The effect of selenium-enriched lactobacillus with traditional Chinese medicine preparation on growth performance and intestinal flora in growing and fattening pigs

试验旨在研究饲料中添加富硒乳酸菌中药制剂对育肥猪生长性能和肠道菌群的影响。选取日龄相近、体重(57±1.5) kg、体况良好的育肥猪96头,随机分为4组,每组4个重复,每个重复6头育肥猪,公母各半。对照组饲喂基础日粮,试验组分别在基础日粮中添加0.1%、0.3%、0.5%富硒乳酸菌中药制剂,预饲期10 d,正式试验60 d,试验期共70 d。结果表明:与对照组相比,0.3%组育肥猪粗蛋白、磷的表观消化率和平均日增重显著提高(P<0.05),料重比显著降低(P<0.05),眼肌面积显著高于对照组(P<0.05)。与对照组相比,0.1%、0.3%和0.5%组的大肠杆菌菌落数显著降低(P<0.05),0.1%和0.3%组育肥猪肠道乳酸菌菌落数显著增加(P<0.05),在小肠绒毛高度与隐窝深度方面的数据0.3%组均显著降低(P<0.05)。综上所述,饲料中添加0.3%富硒乳酸菌中药制剂能有效提高育肥猪生长性能、屠宰性能和肠道菌群。

The purpose of this experiment was to study the effects of adding selenium-enriched lactic acid bacteria on the growth performance and intestinal flora of fattening pigs. 96 pigs with similar age, weight(57±1.5) kg and good body condition were selected and randomly divided into 4 groups, 4 replicates in each group, 6 fattening pigs in each group, and half male and female. The control group was fed the basal diet. The experimental group was added 0.1%, 0.3%, 0.5% selenium-enriched lactic acid bacteria and traditional Chinese medicine preparations to the basal diet.The pre-feeding period was 10 days, the formal test was 60 days and total test period was 70 days. The results showed that the apparent digestibility and average daily gain of crude protein and phosphorus in pigs were significantly increased compared with the control group(P<0.05), the feed-to-weight ratio was significantly decreased(P<0.05), and the eye muscle area was significantly increased compared with the control group(P<0.05). The numbers of E. coli colonies in the 0.1% group, 0.3% group and 0.5% group were significantly lower(P<0.05), and the numbers of intestinal lactic acid bacteria colonies in the 0.1% group and 0.3% group were significantly increased compared with the control group(P<0.05). The data in the small intestine villus height and crypt depth were significantly lower in the 0.3% group(P<0.05). In summary, the addition of 0.3% selenium-enriched lactic acid bacteria and traditional Chinese medicine preparation can effectively improve the growth performance, slaughter performance and intestinal flora in growing and fattening pigs.