NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2019, Vol. 31 ›› Issue (4): 675-681. doi: 10.16333/j.1001-6880.2019.4.019

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Effects of dietary addition of Eucommia leaves for antibiotic on growth performance,blood biochemical parameters and immune organs of weaning piglets

PENG Mi-jun1*,ZHANG Ming-long1,WANG Zhi-hong1, PENG Sheng2,YANG Qiu-ling1,DUAN Ye-hui3,LI Feng-na3,4   

  1. 1Guangdong Provincial Public Laboratory of Analysis and Testing Technology,Guangdong Institute of Analysis Guangzhou 510070,China; 2Key Laboratory of Hunan Forest Products and Chemical Industry Engineering,Jishou University,Zhangjiajie 427000,China; 3Key Laboratory of Agro-ecological Processes in Subtropical Region,National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production,Institute of Subtropical Agriculture,Chinese Academy of Sciences,Changsha 410125,China; 4Hunan Collaborative Innovation Center for Products Safety of Livestock and Poultry,CICAPS,Changsha 410128,China  
  • Online:2019-04-29 Published:2019-04-29

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Abstract: In order to assess their ability to replace antibiotics in the early stages of culture,this experiment was conducted to investigate the effects of dietary addition of different Eucommia leaves on growth performance,diarrhea rate,blood biochemical parameters and immune organs of weaning piglets.Fifty crossbred piglets (Duroc × Landrace × Large white) were randomly allocated to five groups (10 replicates per group ):control group,antibiotic group (75 mg/kg chlortetracycline) and the three Eucommia leaves groups (Eucommia leaves extract,fermented Eucommia leaves,or Eucommia leaves powder,respectivley).The trial lasted for 28 days.The results showed as follows:Compared with the control group,the Eucommia leaves extract group increased ADG and decreased F / G of the weaning piglets (P<0.05);compared with the antibiotic group,no significant difference was observed of the ADG and F / G in the Eucommia leaves extract group and the fermented Eucommia leaves group (P<0.05).Compared to the control,the antibiotic group and the Eucommia leaves extract group significantly reduced the diarrhea rate (P<0.05).Compared to the control,all the treatment groups significantly decreased the blood malonaldehyde levels and increased the totalantioxide capacity (P<0.01).The antibiotic group,the Eucommia leaves extract group and the fermented Eucommia leaves group significantly increased the blood immunoglobulin IgM level (P<0.01) and tended to increase IgG level (P=0.06),and no difference was observed among the three groups.The fermented Eucommia leaves group significantly increased the liver index (P<0.01),and the liver weight,spleen weight,and spleen index were not different among all groups (P>0.05).It was concluded that dietary addition of Eucommia leaves extract could improve growth performance,decreased diarrhea rate,increased immunity and promoted antioxidant capacity of the weaning piglets,and its effects were better than fermented Eucommia leaves and Eucommia leaves powder.

Key words: Eucommia leaves, weaning piglets, antibiotic, growth performance, diarrhea rate, blood biochemical parameters, immune organs

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