Abstract

A total of 180 growing pigs (Duroc × Landrace × Yorkshire) with an initial body weight (BW) of 23.58 ± 0.8 kg were used in this experiment. According to initial BW and sex, pigs were randomly allotted three dietary treatments, 12 replicates (pen) per treatment, and five pigs per pen. The three dietary treatments were basal diet (CON) and basal diet supplemented with either 0.1% Bacillus and Saccharomyce s spp.-based probiotics complex (BS1) or 0.2% probiotics complex (BS2). The whole experiment lasted 42 days. The results showed that the BW of pigs fed the BS1 diet was significantly higher than those fed the CON diet on day 42 ( P < 0.05). The average daily gain (ADG) of pigs receiving BS1 and BS2 diets was higher than those fed CON diet during days 21–42, whereas during the overall experiment period ADG ( P < 0.05) was higher in only BS1 compared with CON group. The NH3 and H2S emissions on day 42 were reduced from the feces of pigs fed probiotic complex-supplemented diets. Therefore, adding 0.1% probiotic complex to the late-phase diet of growing pigs can more effectively improve BW and daily gain and reduce harmful gas emissions.

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