Effects of compound probiotics on growth performance and fecal microorganism of weaned piglets

This study was conducted to evaluate the effect of compound probiotics supplementation on growth performance and fecal micro flora of weaned piglets. Ninety piglets(Large White × Landrace) weaned at 30 to 32days of age were selected and divided into 3 treatments with 3 replicates per treatment and 10 piglets per replicate(5 females and 5 males). The three treatments were: control(a basal diets without antibiotics and compound probiotics), antibiotic group(the basal diets with antibiotic), compound probiotics group(the basal diets with compound probiotics). The trial lasted for 30 days. The results showed that: During the each period and the whole experiment period, there was no significant effect among three treatments on growth performance(P 0.05). At the end of trial, the ADG of the compound probiotics group was higher than that of the control group(5.63%) and antibiotics group(7.73%), The F/G of the compound probiotics group was lower than that of the control group(7.24%) and antibiotics group(2.82%). At days 15 and 30, there was no significant effect among three treatments on the number of Lactobacillus(P 0.05). On day 30, the number of E. coli in feces of the piglets fed the diets supplemented with compound probiotics was significantly lower than that fed the basal diets and the basal diets with antibiotic(P 0.05). These results suggest that the compound probiotics decreases the number of E. coli in feces, promoting weaned piglets health and improving the growth performance of weaned piglets.