›› 2019, Vol. 46 ›› Issue (4): 1011-1017.doi: 10.16431/j.cnki.1671-7236.2019.04.007

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Effect of Long-term Supply of Fermented Complete Feed on the Growth Performance, Fecal Mephitis,Serum Immunity and Antioxidation Indexes of Growing Pigs

LIU Zhiyun, ZHOU Xiaorong, ZHONG Xiaoxia, HUANG Jian, YANG Feiyun   

  1. Key Laboratory of Pig Industry Sciences, Ministry of Agriculture and Rural Affairs, Chongqing Key Laboratory of Pig Industry Sciences, Chongqing Academy of Animal Science, Chongqing 402460, China
  • Received:2018-09-20 Online:2019-04-20 Published:2019-04-22

Abstract:

This experiment was conducted to evaluate the effects of long-term supply of fermented complete feed (FCF) on the growth performance,fecal mephitis,serum immunity and antioxidation indexes of growing pigs.Complete feed was fermented with Bacillus licheniformis and Lactobacillus brevis.A total of 90 pigs (Yorkshire×Rongchang) with the initial weight about 22 kg were used in a 60 d experiment.The pigs were randomly allotted to 3 dietary treatment groups:Control group (antibiotic-free feed),antibiotics and fermentation groups.Each treatment consisted of six replicates with five pigs in each replicate.At the end of the experiment,the growth performance,pH and mephitis of the fresh faeces,serum immunity and antioxidation indexes was measured.The results showed that:①Fermentation extremely significantly improved the T-AOC (P<0.01) of feed.The reducing power and hydroxyl radical scavenging activity tended to rise (P>0.05).②After two months,ADFI,ADG and F/G of pigs in three groups had no significant difference (P>0.05).③The faeces pH,the contents of p-cresol,indole,skatole,acetic acid,propionic acid,butyric acid and valproic acid were not significantly different among three groups (P>0.05).The isovaleric acid of fermentation group were significantly lower than that of antibiotic group (P<0.05).④The contents of serum MDA,T-AOC and the activities of CAT,GSH-Px and SOD of three groups had no significant difference (P>0.05).Compared to control group,the serum IgM level of pigs from fermentation group showed a rising tendency (P>0.05),and the complement protein 4(C4) content was significantly higher (P<0.05),but these two indexes had no significant differences compared to antibiotics group (P>0.05).In conclusion,long-term supply of FCF to growing pigs had no significant effect on the growth performance,feces pH and content of the main malodorous gases,serum antioxidant indexes and IgM,IgG levels,the advantage of short-term feeding did not last.

Key words: fermented complete feed; growing pigs; growth performance; malodorous gas; antioxidation; immunity

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