Effects of Acalypha australis L.extract and bamboo shoot milk complex on growth performance,inflammatory factor levels,immunocompetence and intestinal morphology of suckling piglets
This experiment was conducted to investigate the effects of Acalypha australis L.extract and bamboo shoot milk complex on growth performance and intestinal morphology of suckling piglets.Twelve sows with similar parity and good maternal and milk quality were randomly divided into 4 groups with 3 sows in each group and 10 newborn piglets in each group.The test samples were injected into the mouth of suckling piglets for 3 consecutive days within 1-5 days of birth.Group Ⅰ was given 5 mL normal saline,group Ⅱwas given 4 mL normal saline plus 1 mL Acalypha australis L.Extract and bamboo milk complex,group Ⅲ was fed with 1 mL normal saline+4 mL Acalypha australis L.The extract and bamboo milk complex were fed in group Ⅳ with 5 mL Acalypha australis L..The experiment lasted for 21 days.The results showed as follows:1)Compared with the control group,there was no significant difference in average weight of suckling piglets in groups Ⅱ,Ⅲ and Ⅳ at 7 and 14 days of age(P>0.05);However,at the age of 21 days,the aver-age weight of piglets in test group Ⅳ was significantly higher than that in other groups(P<0.05).2)Acalypha australis L.extract and bamboo shoot milk complex reduced morbidity and mortality in suckling piglets.3)Feeding suckling piglets with Acalypha australis L.extract and bamboo shoot milk complex can reduce the contents of pro-inflammatory factors TNF-α and IL-6 in serum,and improve the contents of anti-inflammatory factors IL-10 and IL-1β in serum of suckling piglets.4)Compared with control group Ⅰ and trial group Ⅱ,the IgA content in serum of suckling piglets in trial groups Ⅲ and Ⅳ was significantly increased(P<0.05);Compared with control groupⅠand test groups Ⅱ and Ⅲ,the complement C4 content in test group Ⅳ was significantly increased(P<0.05).5)There were no significant differences in duodenal villus height,crypt depth and ratio of villus height to crypt depth among experimental groups(P>0.05);The ratio of villus height and villus height to crypt depth of jejunum in test groups Ⅲ and Ⅳ were significantly differ-ent from those in test groups Ⅰ and Ⅱ(P<0.05).Ileum villus height and villus height/crypt depth ratio were significantly different compared with trial groupⅠin groups Ⅲ and Ⅳ(P<0.05),significantly different compared with trial group Ⅱ in group Ⅳ(P<0.05),but no significant difference was found between trial group Ⅱ and trial group Ⅲ(P>0.05).In conclusion,Acalypha australis L.extract and bamboo shoot milk complex can improve the growth performance of suckling piglets,promote the level of inflammatory factors and immune capacity,and improve the intestinal morphology and structure.
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