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Effects of tea tree oil supplementation on growth performance, antioxidant capacity, immune status and microbial community in weaned pigs
Archives of Animal Nutrition ( IF 2 ) Pub Date : 2021-02-08 , DOI: 10.1080/1745039x.2021.1877074
Gang Zhang 1 , Jinbiao Zhao 1 , Wenxuan Dong 1 , Xiaoming Song 1 , Jianjun Zang 1 , Shouqing Ni 2 , Shuai Zhang 1 , Defa Li 1
Affiliation  

ABSTRACT

The objective of this study was to determine whether dietary tea tree oil (TTO) supplementation could effectively replace the antibiotics through modulating the antioxidant capacity and intestinal microbiota profile, and then decreasing the diarrhoea incidence and improving the growth performance of weaned pigs. A total of 216 weaned pigs with initial body weights (BW) of 9.19 ± 1.86 kg were randomly allocated to three dietary treatments in a completely randomised design. The dietary treatments included a corn-soybean meal basal diet (CON) without any antibiotics, and two experimental diets formulated by adding 75 mg/kg aureomycin (AGP) or 100 mg/kg TTO into the basal diet, respectively. Pigs fed the TTO diet showed greater gain to feed ratio (p < 0.05) than those fed CON and AGP diets during d 0–14 and d 14–28. Both dietary TTO and AGP supplementation tended to increase the average daily gain of weaned pigs during d 14–28 (p = 0.06) and the overall 28-d period (p = 0.07), and significantly reduced (p < 0.05) the diarrhoea incidence during d 0–14 compared with the CON treatment. In addition, dietary TTO supplementation improved the apparent total tract digestibility of dry matter and ether extract (p < 0.05), and increased (p < 0.05) the propionate and butyrate concentrations in faecal samples of weaned pigs. Moreover, pigs fed the TTO diet showed greater total antioxidant capacity, greater superoxide dismutase and interleukin-10 concentrations, and lower malondialdehyde concentration in serum than those fed the CON diet (p < 0.05). Furthermore, pigs fed the TTO diet demonstrated greater relative abundance of Clostridiaceae_1, while those fed the AGP diet exhibited greater relative abundance of Lactobacillaceae at family level. In conclusion, dietary TTO supplementation could improve growth performance in weaned pigs, which could be mainly attributed to the benefits on nutrient digestibility, antioxidative capacity and microbial community profile.



中文翻译:

添加茶树油对断奶仔猪生长性能、抗氧化能力、免疫状态和微生物群落的影响

摘要

本研究的目的是确定膳食茶树油 (TTO) 补充剂是否可以通过调节抗氧化能力和肠道微生物群谱来有效替代抗生素,进而降低腹泻发生率并改善断奶仔猪的生长性能。总共 216 头初始体重 (BW) 为 9.19 ± 1.86 kg 的断奶猪被随机分配到完全随机设计的三种日粮处理中。日粮处理包括不含任何抗生素的玉米-豆粕基础日粮 (CON),以及分别在基础日粮中添加 75 mg/kg 金霉素 (AGP) 或 100 mg/kg TTO 配制的两种实验日粮。饲喂 TTO 日粮的猪表现出更高的增重比(p< 0.05) 比那些在第 0-14 天和第 14-28 天喂食 CON 和 AGP 饮食的人。在第 14-28 天 ( p = 0.06) 和整个 28 天期间 ( p = 0.07),日粮添加 TTO 和 AGP 都倾向于增加断奶仔猪的平均日增重,并显着降低 ( p < 0.05) 腹泻发生率在第 0-14 天与 CON 治疗相比。此外,日粮中添加 TTO 提高了干物质和乙醚提取物的表观总消化率 ( p < 0.05),并增加了 ( p< 0.05) 断奶猪粪便样本中的丙酸盐和丁酸盐浓度。此外,与饲喂 CON 日粮的猪相比,饲喂 TTO 日粮的猪显示出更高的总抗氧化能力、更高的超氧化物歧化酶和白细胞介素 10 浓度,以及更低的血清丙二醛浓度(p < 0.05)。此外,饲喂TTO饮食展示的较大的相对丰度梭菌_ 1,而那些供给的AGP饮食表现出更大的相对丰度乳杆菌在家庭水平。总之,日粮中添加 TTO 可以提高断奶仔猪的生长性能,这主要归因于对营养物质消化率、抗氧化能力和微生物群落特征的益处。

更新日期:2021-03-23
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