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Abstract

This study was to investigate the effects of dietary supplementation of Bacillus coagulans (BC) and yeast hydrolysates (YH) on growth performance, antioxidant activity, cytokines and intestinal microflora of growing-finishing pigs. Thirty-six barrows (initial BW = 26.87 ± 2.65 kg) were assigned randomly to 3 treatments with 4 replicates, 3 pigs per replicate. Pigs in the control group (CON) were fed a basal diet, and the diets for the other 2 groups were the basal diet plus BC at 200 mg/kg and the basal diet plus YH at 3,000 mg/kg. The trial lasted for 104 d. Compared with CON, YH treatment significantly increased average daily gain (ADG) and average daily feed intake (ADFI) during the finishing phase (P < 0.05), and significantly enhanced ADG during the overall period (P < 0.05). Dietary inclusion of BC tended to increase ADFI during the finishing period (P = 0.08). Compared with CON, BC treatment improved lysozyme (LZM), complement 3 (C3), complement 4 (C4), interlenkin-10 (IL-10) and total antioxidant capacity (T-AOC) level in serum (P < 0.05). Dietary inclusion of YH enhanced the serum IL-10 level (P < 0.05) and tended to increase T-AOC level (P = 0.06). Dietary inclusion of YH elevated (P < 0.05) the number of Lactobacillus and Bacillus in cecal contents of pigs, promoted the populations of Bifidobacterium and Bacillus in colonic contents. Moreover, the BC diet increased (P < 0.05) the count of Bifidobacterium in colonic contents. These results indicated that dietary BC supplementation is beneficial to improve the immunity. Dietary YH supplementation promoted the growth performance and the populations of beneficial bacteria in the hindgut of the growing-finishing pigs.

Keywords: Antioxidant activity; Bacillus coagulans; Growth performance; Immunity; Intestinal microflora; Yeast hydrolysates.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Bacillus coagulansImproved Immune FunctionBeneficial
Moderate
Bacillus coagulansIncreased Bifidobacterium LevelsBeneficial
Moderate
Bacillus coagulans LactoSpore 1 billion CFUImproved Immune FunctionBeneficial
Moderate
Bacillus coagulans LactoSpore 1 billion CFUImproved Microflora CompositionBeneficial
Large
Bacillus coagulans MTCC 5856Improved Immune FunctionBeneficial
Moderate
Bacillus coagulans MTCC 5856Increased Bifidobacterium LevelsBeneficial
Moderate
Bacillus coagulans ProDuraImproved Immune FunctionBeneficial
Moderate
Bacillus coagulans ProDuraIncreased Beneficial Gut BacteriaBeneficial
Moderate
Bacillus coagulans SC208Improved Gut MicrobiotaBeneficial
Moderate
Bacillus coagulans SC208Improved Immune FunctionBeneficial
Moderate
Bacillus coagulans SNZ-1969Improved Immune FunctionBeneficial
Moderate
Bacillus coagulans SNZ-1969Increased Beneficial Gut MicrobiotaBeneficial
Moderate
Bacillus coagulans Unique IS-2Improved Immune FunctionBeneficial
Moderate
Bacillus coagulans Unique IS-2Increased Bifidobacterium LevelsBeneficial
Moderate

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