›› 2018, Vol. 45 ›› Issue (1): 86-92.doi: 10.16431/j.cnki.1671-7236.2018.01.011

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Effects of Tea Tree Oil on Growth Performance,Serum Biochemical and Viscera Indexes of Weaned Piglets

WANG Shunan1, DONG Li1, WEI Zhenwu1, HUO Yongjiu1, FANG Wei1, FENG Feifei1, ZHU Xinyu2, YU Lihuai1   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. Chen Fang Biotechnology Co., Ltd., Wuxi 214000, China
  • Received:2017-07-09 Online:2018-01-20 Published:2018-01-20

Abstract:

The experiment was carried out to investigate the effects of tea tree oil on growth performance,serum biochemical indexes and viscera indexes of weaned piglets,and discuss the possibility of tea tree oil replace the antibiotics. One hundred and twenty Duroc pig×Landrace pig×Yorkshire pig crossbreed weaned piglets (21-day-old,6.73 kg±0.12 kg) were randomly divided into five groups:CON group (basal diet),ANT group (basal diet+200 mg/kg colistin (10%)+75 mg/kg chlortetracycline (15%)),LTO group (basal diet+50 mg/kg tea tree oil),MTO group (basal diet+100 mg/kg tea tree oil) and HTO group (basal diet+150 mg/kg tea tree oil),with six replicates per group and four pigs per replicate. The experiment lasted for 21 d. During the experiment,the growth performance was measured (ADG,ADFI and F/G),and at the end of the experiment,one piglet was chosen from each replicate for blood sampling and then were slaughtered,the heart,liver,spleen,lung,kidney,thymus and pancreas were collected to determine the organ indexes.The results showed as follow:① Compared with CON group,ADG of MTO and HTO groups increased by 8.33% and 14.84% (P>0.05),respectively, F/G were decreased 9.58% and 7.78%,and the two indexes were not significant different with ANT group (P>0.05).②Diarrhea rate and diarrhea index of ANT,MTO and HTO groups were significantly lower than that of CON (P<0.05),in which MTO was the lowest.③Compared with ANT group,the activities of AST and GGT in MTO and HTO groups were significantly reduced (P<0.05),GLU in LTO and HTO groups were significantly decreased (P<0.05),there were no significant difference in ALT,TP,ALB,GLOB and A/G among groups (P>0.05).④The liver index in MTO and MTO groups and thymus index in LTO group were significantly higher than ANT group (P<0.05).In summary,adding a certain percentage of tea tree oil (100 mg/kg) to diet of weaned piglets could promote the growth performance,reduce diarrhea, promote the development of liver and thymus with a certain degree of regulate metabolism.

Key words: tea tree oil; weaned piglet; growth performance; diarrhea rate; serum biochemical indexes; organ indexes

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