本试验旨在探讨饲粮中添加三丁酸甘油酯（TB）和牛至油（OEO）对断奶仔猪生长性能、血清生化指标、营养物质表观消化率和粪中微生物菌群的影响。试验选用28日龄平均体重为（7.27±0.68） kg的健康大白断奶仔猪128头，随机分成4组，每组4个重复，每个重复8头猪。各组分别饲喂基础饲粮（对照组）、基础饲粮+1 kg/t TB（TB组）、基础饲粮+1 kg/t OEO（OEO组）、基础饲粮+1 kg/t TB+1 kg/t OEO（TB+OEO组）。试验期28 d。结果表明：1）与对照组相比，OEO组显著提高了断奶仔猪平均日增重（P<0.05），极显著降低了腹泻率（P<0.01）；TB+OEO组显著降低了断奶仔猪料重比（P<0.05），极显著降低了腹泻率（P<0.01）。2）各组之间血清生化指标无显著差异（P>0.05）。3）与对照组相比，TB+OEO组显著提高了断奶仔猪粗蛋白质表观消化率（P<0.05），极显著提高了粗脂肪表观消化率（P<0.01）。4）与对照组相比，TB组、OEO组和TB+OEO组均极显著降低了粪中大肠杆菌的数量（P<0.01）；TB+OEO组显著提高了粪中双歧杆菌的数量（P<0.05）。综上所述，基础饲粮中添加TB+OEO可提高断奶仔猪生长性能，改善营养物质表观消化率，调节肠道菌群平衡。
This experiment was conducted to investigate the effects of dietary tributyrin (TB) and oregano essential oil (OEO) on growth performances, serum biochemical indices, nutrient apparent digestibility and fecal micro flora of weaning piglets. A total of 128 healthy 28-day-old large white piglets with body weight of (7.27±0.68) kg were randomly allotted to 4 groups with 4 replicates per group and 8 piglets per replicate. The four groups were fed the basal diet (control group), the basal diet+1 kg/t TB (TB group), the basal diet+1 kg/t OEO (OEO group), the basal diet+1 kg/t TB+1 kg/t OEO (TB+OEO group), respectively. The trial lasted for 28 days. The results showed as follows: 1) compared with the control group, the average daily gain of weaning piglets in OEO group was significantly increased (P<0.05), and the diarrhea rate of weaning piglets was significantly decreased (P<0.01); the feed to gain ratio of weaning piglets in TB+OEO group was significantly increased (P<0.05), and the diarrhea rate of weaning piglets was significantly decreased (P<0.01). 2) There were no significant effects on serum biochemical indices among all groups (P>0.05). 3) Compared with the control group, the crude protein apparent digestibility of weaning piglets in TB+OEO group was significantly increased (P<0.05), and the ether extract apparent digestibility of weaning piglets was significantly increased (P<0.01). 4) Compared with the control group, the number of Escherichia coli in feces in TB group, OEO group and TB+OEO group was significantly decreased (P<0.01), the number of Bifidobacterium in feces in TB+OEO group was significantly increased (P<0.05). The results indicate that supplementation of TB and OEO in piglets diet can improve the growth performance of piglets, improve nutrient apparent digestibility and regulate intestinal flora balance.
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