摘要
Abstract
This experiment aimed to investigate the effects of liquid fermented feed with probiotics on the production performance,mortality rate,and economic benefits of fattening pigs.A total of 16 800 healthy and disease-free Duroc-Landrace-Yorkshire fattening pigs at 80 days of age and similar body weight were randomly divided into 14 groups,with 40 replicates in each group and 30 pigs in each replicate.Groups 1 to 6 were the control groups,fed with traditional dry feed and free access to water.Groups 7 to 14 were the experimental groups,fed with liquid fermented feed prepared by fermenting with 2％probiotics(A mixture of Lactobacillus)for 12 hours at 25 ℃(Water-to-feed ratio of 3:1)through an automatic liquid feeding system.The experimental period was 90 days.At the beginning and end of the experiment,the pigs in each group were weighed after fasting,and their initial weight,final weight,daily feed intake,and number of deaths were accurately recorded.The average daily gain(ADG),average daily feed intake(ADFI),feed-to-weight ratio(F/G),and mortality rate were calculated.The results showed that the final weight of each fattening pig in the experimental group significantly increased by 9.63 kg(P<0.05).Compared with the control group,the feed-to-weight ratio of the experimental group of fat-tening pigs decreased by 0.34(P<0.05),and the feed conversion rate significantly improved.The control group of fattening pigs had a relatively severe diarrhea situation,with a mortality rate of 3％,while the mortality rate of the experimental group of fattening pigs was 1％,which significantly decreased.The feed cost of the experimental group decreased by 32.53 yuan/kg,and the gross profit per pig increased by 160.21 yuan.In conclusion,feeding liquid fermented feed with 2％probiotics can significantly improve the production performance of fattening pigs,reduce the mortality rate,and increase economic benefits.关键词
液态发酵饲料/育肥猪/生产性能/病死率/经济效益Key words
Liquid fermented feed/Fattening pigs/Production performance/Mortality rate/Economic benefits
