杨树来源多酚和低聚木糖对断奶仔猪生长性能、免疫与抗氧化功能、血常规和血清生化指标的影响

Effects of Polyphenols and Xylooligosaccharides from Poplar on Growth Performance,Immune Function,Antioxidant Ability,Blood Routine and Serum Biochemical Indexes of Weaned Piglets

【目的】旨在研究饲粮中添加杨树来源多酚和低聚木糖对断奶仔猪生长性能、免疫及抗氧化功能、血常规和血清生化指标的影响。【方法】选择72头40日龄体质量相近的“杜×长×大”断奶仔猪,随机分为3组,每组4个重复,每个重复6头猪(公母各半)。抗生素对照组饲喂含75 mg/kg的喹烯酮和10 mg/kg恩拉霉素的基础饲粮,多酚组饲喂含0.05%杨树多酚的基础饲粮,低聚木糖组饲喂含0.01%杨树来源低聚木糖的基础饲粮,试验期30 d。【结果】试验表明:1)多酚组末体质量、平均日采食量、平均日增重和料肉比与抗生素对照组差异不显著(P>0.05),低聚木糖组平均日采食量与抗生素对照组差异不显著(P>0.05),末体质量和平均日增重显著低于抗生素对照组、料肉比显著高于抗生素对照组(P<0.05);2)与抗生素对照组相比,多酚组血清IgG和IgA含量分别提高了1.4%(P>0.05)和14.2%(P<0.05),低聚木糖组血清IgG和IgA含量分别提高了8.4%(P<0.05)和11.3%(P>0.05);3)除多酚组平均血红蛋白浓度显著高于抗生素对照组外,多酚组和低聚木糖组其他血常规指标、血液生化和抗氧化性能各项指标与抗生素对照组均无显著差异(P>0.05)。【结论】综上所述,饲粮中添加0.05%杨树多酚对断奶仔猪生长性能的作用效果与抗生素效果相当,而添加0.01%低聚木糖效果比抗生素效果略低,但两者在提高断奶仔猪免疫功能方面具有一定的优势。

[Objective]This experiment was conducted to study the effects of polyphenols and xylooligosaccharides from poplar on the growth performance,immune function,antioxidant ability,blood routine and serum biochemical indexes in weaned piglets.[Method]A total of 7240-day-old“Duroc×Landrace×Yorkshire”weaned piglets with similar body weight were randomly divided into 3 groups with 4 replicates per group and 6 pigs per replicate(half male and half female).The pigs in the antibiotic control group were fed with the basal diet supplemented with 75 mg/kg of quinocetone and 10 mg/kg of enramycin,the pigs in the polyphenols group were fed with the basal diet supplemented with 0.05%poplar polyphenols,and those in the xylooligosaccharides group were fed with the basal diet supplemented with 0.01%xylooligosaccharides from poplar.The experiment lasted for 30 days.[Result]The results showed as follows:1)there were no significant differences in final body weight,the average daily feed intake(ADFI),average daily gain(ADG)and ratio of feed to gain(F/G)between the polyphenols group and antibiotic control group(P>0.05).Compared with the antibiotic control group,the final body weight and ADG in the xylooligosaccharides group decreased significantly and F/G increased(P<0.05),while ADFI didn’t change(P>0.05).2)Compared with the antibiotic control group,polyphenols supplementation increased serum immunoglobulin G(IgG)and IgA contents by 1.4%(P>0.05)and 14.2%(P<0.05),and xylooligosaccharides supplementation increased IgG and IgA contents by 8.4%(P<0.05)and 11.3%(P>0.05),respectively.3)The mean corpuscular hemoglobin concentration(MCHC)in blood of the polyphenols group were significantly higher than that of the antibiotic control group(P<0.05)and there were no significant differences in other blood routine,blood biochemical and antioxidant indexes among all the groups(P>0.05).[Conclusion]In conclusion,the effects of dietary poplar polyphenols on the growth performance of weaning piglets is comparable to that of antibiotics and effect of xylooligosaccharides supplementation on growth performance is slightly less than that of antibiotics,while both the supplementations have certain advantages in improving immune function of piglets.