The effects of dietary sodium butyrate supplementation on the growth performance, carcass traits and intestinal microbiota of growing-finishing pigs
The effects of dietary sodium butyrate supplementation on the growth performance, carcass traits and intestinal microbiota of growing-finishing pigs
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日粮添加丁酸钠对生长肥育猪生长性能、胴体性状及肠道菌群的影响
DOI：
10.1111/jam.14612
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发表时间：
2020-03-01
影响因子：
4
通讯作者：
Sun, Z.
中科院分区：
文献类型：
--
作者：
Sun, W.;Sun, J.;Sun, Z.
目的研究饲粮中添加丁酸钠对生长肥育猪生产性能、屠宰性能和肠道功能的影响。方法与结果选用27头中心点4+/-0中心点4 kg的生长肥育猪30头，随机分为基础日粮(阴性对照组)、基础日粮+40ppm杆菌肽锌组(阳性对照组)和基础日粮+0中心点2%丁酸钠组(丁酸钠组)。实验持续69天，其中饮食和住房条件适应3天。第70天，每组各屠宰5头仔猪，采集血液和组织标本。与对照组相比，丁酸钠组猪的最终体重、日增重和日采食量增加(P<；0中心点05)，采食量/体增重比降低(P<；0中心点05)。丁酸钠组猪的屠体重显著高于阴性组和阳性组(P<；0中心点05)，阳性组猪的背脂厚度高于阴性组和丁酸钠组(P<；0中心点001)。与阴性组和阳性组相比，饲喂丁酸钠组仔猪盲肠中类杆菌的相对丰度增加，菌丝和蛋白杆菌的相对丰度降低(P<；0中心点05)。结论饲粮中添加丁酸钠提高了生长肥育猪的生长性能，改善了屠宰性能和肠道健康，无抗生素饲料的意义和影响已成为世界范围内的必然趋势。本研究表明，日粮中添加丁酸钠能改善生长肥育猪的生长性能和肠道健康。因此，丁酸钠可以作为抗生素的替代品应用于生长肥育猪饲料中。
Aim This study was carried out to investigate the effects of dietary sodium butyrate supplementation on growth performance, carcass traits and intestinal of growing-finishing pigs.Methods and Results Thirty pigs (27 center dot 4 +/- 0 center dot 4 kg) were randomly assigned to receive one of three diets: basal diet (negative control group), basal diet + 40 ppm zinc bacitracin (positive control group) and basal diet + 0 center dot 2% sodium butyrate (sodium butyrate group), respectively. The experiment lasted for 69 days, including 3 days for diet and housing condition adaptation. On day 70, five piglets from each diet group were slaughtered for collecting blood and tissue samples. When compared to the control group, final body weight, daily body weight gain and daily feed intake of pigs in the sodium butyrate group were increased (P < 0 center dot 05) and feed intake/body weight gain ratio was decreased (P < 0 center dot 05). Carcass weight of pigs in the sodium butyrate group was higher than that of pigs in the negative and positive groups (P < 0 center dot 05); backfat thickness of pigs in the positive group was higher than that of pigs in the negative group and sodium butyrate group (P < 0 center dot 001). When compared to the negative and positive groups, pigs fed diet supplemented with sodium butyrate showed a increased relative abundance of bacteroidetes in the caecum and a decreased relative abundance of fiemicutes and proteobacteria in the caecum (P < 0 center dot 05).Conclusion The results indicated that dietary sodium butyrate supplementation increased growth performance of growing-finishing pigs and improved the carcass traits and intestinal health.Significance and Impact of the Study Antibiotic-free feed has become an inevitable worldwide trend. This study showed that dietary sodium butyrate supplementation improved the growth performance and intestinal health of growing-finishing pigs. Thus, sodium butyrate can be applied in growing-finishing pig feed as an alternative of antibiotics.