Effects of some solutions replacing antibiotics in preventing pig diarrhea

Abstract

In order to find out the solutions replacing antibiotics in preventing diarrhea for post-weaning piglets, combinations of diet modification and biosecurity measures were used in this study. A total of 72 pigs for three trials were randomly allotted to 4 dietary groups (6 pigs for each group) for a trial in 28 days: Group N (basal diet alone, negative control); Group P (basal diet with 0,1% colistin, positive control); Group E (basal diet with effective microorganisms -EM), group G (basal diet with 1% green tea). The experimental results indicated that the final body weight of pigs among the 4 groups was not significant difference (p>0,05). However, the weight gain of pigs in the group E showed higher than those in the other groups of all three trials. No incidence of diarrhea, but Salmonella spp. presented in pig feces of the group N and group E in the first trial. The count of aerobic bacteria, E.coli and Coliforms in pig feces of the group G (supplementing polyphenol green tea in the diet) were lower than those of the group E (supplementing EM in the diet). None of fecal viruses: PED, TGE and rotavirus was detected in pig feces of all trials. The results of this study indicated that the pigs fed EM and polyphenol green tea supplementing in the diets and raised in a biosecurity environment do not require dietary antibiotic supplementation in order to maximize the growth and reduce diarrheal incidences.