Effects of single and complex probiotics in growing-finishing pigs and swine compost

This study was conducted to supplement single and complex probiotics to investigate the effect on growing-finishing pigs and compost. In experiment 1, the 64 crossbred ([Landrace × Yorkshire] × Duroc) pigs with an initial body weight of 18.75 ± 0.33 kg and a birth of 63 days were assigned to a completely randomized four treatment groups based on the initial body weight (4 pigs in a pen with 4 replicate pens for each treatment). For 13 weeks, the dietary treatments were provided: 1) Control (CON; basal diet), 2) T1 (CON + 0.2% ), 3) T2 (CON + 0.2% ), 4) T3 (CON + 0.2% + 0.2% ). In experiment 2, the pig manure was obtained from Chungbuk National University (Cheongju, Korea) swine farm. For 12 weeks, the supplementary treatments were provided: 1) CON, non-additive compost; 2) T1, spray 10 g per 3.306 m ; 3) T2, spray 40 g per 3.306 m ; 4) T3, spray 10 g per 3.306 m ; 5) T4: spray 40 g per 3.306 m ; 6) T5, spray 5 g + 5 g per 3.306 m ; 7) T6, spray 20 g + 20 g per 3.306 m and there were 6 replicates each treatment. In experiment 1, During the overall experimental period, T3 showed significantly improved ( < 0.05) feed conversion ratio and average daily gain compared to other groups. In average maturity score, T3 showed significantly higher ( < 0.05) than other groups. Supplementing complex probiotics group improved ( < 0.05) H2S emissions and fecal microflora compared to the non-supplementing group. In experiment 2, additive probiotics groups had no effect ( > 0.05) on moisture content than the non-additive group at 9 and 12 weeks. T6 showed a significantly improved ( < 0.05) average maturity score at all periods and ammonia emissions at 1 week and 4 weeks compared to other groups. In summary, supplementation complex probiotics induced positive effects on both pigs and compost.