›› 2018, Vol. 45 ›› Issue (12): 3419-3430.doi: 10.16431/j.cnki.1671-7236.2018.12.014

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Progress of Biological Functions of Plant Extracts and Their Application in Piglets

CUI Yiyan, TIAN Zhimei, LI Zhenming, RONG Ting, MA Xianyong, LI Jianhao   

  1. State Key Laboratory of Livestock and Poultry Breeding, The Key Laboratory of Animal Nutrition and Feed Science(South China) of Ministry of Agriculture, Guangdong Key Laboratory of Animal Breeding and Nutrition, Guangdong Public Laboratory of Animal Breeding and Nutrition, Institute of Animal Science, Guangdong Engineering Technology Research Center of Animal Meat Quality and Safety Control and Evaluation, Guangzhou 510640, China
  • Received:2018-05-23 Online:2018-12-20 Published:2018-12-21

Abstract:

Plant extracts (PE) are single or mixed substances obtained from plants through physical or chemical methods.They contain polyphenols,alkaloids,polysaccharides,essential oils and other active substances.Their biological functions are diverse:Regulating the activities of antioxidant enzymes,reducing peroxide,inhibiting or eliminating free radicals,etc;Achieving immune responses by regulating the activation of NF-κB,ERK,JNK and expression of related transcription factors;Reducing inflammatory cytokines and related gene expression to alleviate inflammation;Have antibacterial effect and are not easy to produce drug resistance;Achieving apoptosis and anticancer effect by changing the cell cycle of cancer cells;Having significant inhibitory effects on parasites,such as plasmodium,filariosis and Trypanosoma cruzi.Plant extracts are widely used in piglets and have good application results:Improving the growth performance of piglets,such as pineapple stem,star anise extracts;Promoting the digestion and absorption of piglets to improve the metabolism of nutrients;Reducing aminotransferase and AKP activity to relieve stress;Increasing the activities of antioxidant enzymes and reducing the level of peroxide in piglets;Increasing the content of cytokines and immunoglobulin of blood in piglets,and enhancing their immune functions;Regulating intestinal flora,improving intestinal mucosal morphology,and reducing piglet diarrhea.As a kind of green and healthy additive,the widespread use of plant extracts can greatly reduce the use of antibiotics.It is believed that,with the development of biotechnology,plant extracts will play more important role in the healthy breeding.

Key words: plant extracts; piglet; antioxidant; immunity; antibacterial

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