›› 2019, Vol. 46 ›› Issue (3): 684-689.doi: 10.16431/j.cnki.1671-7236.2019.03.006

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effect of Compound Plant Essential Oils on Structure of Intestinal Mucosa and Antioxidant Capacity of Weaned Piglets Challenged with Lipopolysaccharide

SONG Zhuan2, ZHAO Guangyu2, DONG Yi2, JI Changzheng2, LI Siyuan2, WANG Lei1,2, YI Dan1,2, HOU Yongqing1,2   

  1. 1. Engineering Research Center of Feed Protein Resources on Agricultural By-products, Ministry of Education, Wuhan Polytechnic University, Wuhan 430023, China;
    2. Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China
  • Received:2018-08-03 Online:2019-03-20 Published:2019-03-20

Abstract:

In order to investigate the effect of compound plant essential oil (OCT) on structure of intestinal mucosa and antioxidant capacity of weaned piglets challenged with lipopolysaccharid (LPS),twenty-four weaned piglets (28-day-old,Duroc×Landrace×Yorkshire) were randomly assigned into 3 groups:Control group,LPS group and OCT group.Piglets in the control and LPS groups were fed a basal diet,and piglets in the OCT group received the basal diet+50 mg/kg OCT.On the 21th day of the trail,piglets in the LPS and OCT groups were injected intraperitoneally with LPS (100 μg/(kg·BW)),and piglets in the control group were injected with the same volume of physiological saline.Venous blood samples were obtained at 3 h post LPS or saline injection,all piglets were killed to obtain the intestinal mucosa for analysis at 6 h post LPS or saline injection.Compared with the control group,LPS stimulation had a tendency to decrease villus height/crypt depth in jejunal mucosa (P>0.05),it could cause a significant reduction in villus height and villous height/crypt depth in ileal mucosa;the activity of CAT and SOD in plasma,and SOD in jejunum mucosa were decreased significantly (P<0.05),it also increased the activity of iNOS in jejunum mucosa,the content of H2O2 in plasma and ileum mucosa significantly(P<0.05).Compared with the LPS group,adding OCT could increase villus height and villus height/crypt depth in jejunal mucosa,villus height in ileal mucosa significantly (P<0.05),and villus height/crypt depth in ileal mucosa had a tendency to increase (P>0.05);The activity of CAT in plasma and SOD in jejunum mucosa were also increased significantly (P<0.05),the content of H2O2 in plasma and ileum mucosa were decreased significantly (P<0.05).In conclusion,the addition of 50 mg/kg OCT to the diet could alleviate the oxidative stress induced by LPS challenge to a certain extent and improve the intestinal structure of piglets.

Key words: compound plant essential oil; weaned piglets; lipopolysaccharide; intestinal mucosa; intestinal morphology; antioxidant capacity

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