scholarly journals Effect of Dietary Bacillus Subtilis C14 and RX7 Strains on Growth Performance, Blood Parameter, and Intestinal Microbiota in Broiler Chickens Challenged with Salmonella Gallinarum

2017 ◽  
Vol 54 (3) ◽  
pp. 236-241
Author(s):  
Jae-Hong Park ◽  
Yong-Min Kim ◽  
Dae-Kyung Kang ◽  
In-Ho Kim
Keyword(s):  
Bacillus Subtilis ◽  
Growth Performance ◽  
Intestinal Microbiota ◽  
Broiler Chickens ◽  
Blood Parameter ◽  
Salmonella Gallinarum

scholarly journals Supplemental Bacillus subtilis DSM 29784 and enzymes, alone or in combination, as alternatives for antibiotics to improve growth performance, digestive enzyme activity, anti-oxidative status, immune response and the intestinal barrier of broiler chickens

2020 ◽  
pp. 1-14 ◽  
Author(s):  
Yuanyuan Wang ◽  
Chianning Heng ◽  
Xihong Zhou ◽  
Guangtian Cao ◽  
Lei Jiang ◽  
...  
Keyword(s):  
Immune Response ◽  
Enzyme Activity ◽  
Bacillus Subtilis ◽  
Growth Performance ◽  
Intestinal Microbiota ◽  
Broiler Chickens ◽  
Digestive Enzyme ◽  
Intestinal Barrier ◽  
Digestive Enzyme Activity ◽  
Jejunal Mucosa

Abstract The present study investigated the effect of Bacillus subtilis DSM 29784 (Ba) and enzymes (xylanase and β-glucanases; Enz), alone or in combination (BE) as antibiotic replacements, on the growth performance, digestive enzyme activity, immune response and the intestinal barrier of broiler chickens. In total, 1200 1-d-old broilers were randomly assigned to five dietary treatments, each with six replicate pens of forty birds for 63 d as follows: (a) basal diet (control), supplemented with (b) 1 × 109 colony-forming units (cfu)/kg Ba, (c) 300 mg/kg Enz, (d) 1 × 109 cfu/kg Ba and 300 mg/kg Enz and (e) 250 mg/kg enramycin (ER). Ba, Enz and BE, similar to ER, decreased the feed conversion rate, maintained intestinal integrity with a higher villus height:crypt depth ratio and increased the numbers of goblet cells. The BE group exhibited higher expression of claudin-1 and mucin 2 than the other four groups. BE supplementation significantly increased the α-diversity and β-diversity of the intestinal microbiota and markedly enhanced lipase activity in the duodenal mucosa. Serum endotoxin was significantly decreased in the BE group. Compared with those in the control group, increased superoxide dismutase and glutathione peroxidase activities were observed in the jejunal mucosa of the Ba and BE groups, respectively. In conclusion, the results suggested that dietary treatment with Ba, Enz or BE has beneficial effects on growth performance and anti-oxidative capacity, and BE had better effects than Ba or Enz alone on digestive enzyme activity and the intestinal microbiota. Ba or Enz could be used as an alternative to antibiotics for broiler chickens.

scholarly journals Effect of Antimicrobial Peptide Microcin J25 on Growth Performance, Immune Regulation, and Intestinal Microbiota in Broiler Chickens Challenged with Escherichia coli and Salmonella

Animals ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 345 ◽  
Author(s):  
Gang Wang ◽  
Qinglong Song ◽  
Shuo Huang ◽  
Yuming Wang ◽  
Shuang Cai ◽  
...  
Keyword(s):  
Antimicrobial Peptide ◽  
Growth Performance ◽  
Intestinal Microbiota ◽  
Immune Regulation ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
The Body ◽  
Villus Height ◽  
Microcin J25 ◽  
Challenge Group

The purpose of this study was to investigate the effects of antimicrobial peptide microcin J25 (MccJ25) on growth performance, immune regulation, and intestinal microbiota in broilers. A total of 3120 one-day-old male Arbor Acres (AA) broilers were randomly allocated to five groups (12 replicates, 52 chickens per replicate). The treatments were control, challenge (0 mg/kg MccJ25), different dosages of antimicrobial peptide (AMP) (0.5 and 1mg/kg MccJ25), and antibiotic groups (20 mg/kg colistin sulfate). The MccJ25 groups increased the body weight gain (starter and overall) that was reduced in the challenge group. The overall (day 1 to day 42) feed-to-gain ratio (G:F) was significantly decreased in AMP groups compared with the challenge group. Birds fed AMP had a decreased population of total anaerobic bacteria (day 21 and day 42) and E. coli (day 21 and day 42) in feces, as well as a lower Salmonella infection rate (day 21 and day 42) compared with birds in the challenge group. The villus height of the duodenum, jejunum, and ileum, as well as the villus height/crypt depth of the duodenum and jejunum were greater in AMP groups than birds in the challenge group. Moreover, MccJ25 linearly improved the villus height of the duodenum and jejunum. The addition of MccJ25 decreased the concentration of TNF-α, IL-1β, and IL-6 compared with challenge group. At d 21, MccJ25 linearly reduced the level of IL-6. In conclusion, dietary supplemented MccJ25 effectively improved performance, systematic inflammation, and improved fecal microbiota composition of the broilers.

scholarly journals Bacillus subtilis DSM 32315 Supplementation Attenuates the Effects of Clostridium perfringens Challenge on the Growth Performance and Intestinal Microbiota of Broiler Chickens

2019 ◽  
Vol 7 (3) ◽  
pp. 71 ◽  
Author(s):  
Cristiano Bortoluzzi ◽  
Bruno Serpa Vieira ◽  
Juliano Cesar de Paula Dorigam ◽  
Anita Menconi ◽  
Adebayo Sokale ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Clostridium Perfringens ◽  
Intestinal Microbiota ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Dietary Supplementation ◽  
Necrotic Enteritis ◽  
Feed Conversion ◽  
Negative Effects ◽  
Infected Control

The objective of this study was to evaluate the effects of the dietary supplementation of Bacillus subtilis DSM 32315 (probiotic) on the performance and intestinal microbiota of broiler chickens infected with Clostridium perfringens (CP). One-day-old broiler chickens were assigned to 3 treatments with 8 replicate pens (50 birds/pen). The treatments were: non-infected control; infected control; and infected supplemented with probiotic (1 × 106 CFU/g of feed). On day of hatch, all birds were sprayed with a coccidia vaccine based on the manufacturer recommended dosage. On d 18–20 the infected birds were inoculated with CP via feed. Necrotic enteritis (NE) lesion score was performed on d 21. Digestive tract of 2 birds/pen was collected on d 21 to analyze the ileal and cecal microbiota by 16S rRNA sequencing. Performance was evaluated on d 28 and 42. On d 21, probiotic supplementation reduced (p < 0.001) the severity of NE related lesion versus infected control birds. On d 28, feed efficiency was improved (p < 0.001) in birds supplemented with probiotic versus infected control birds. On d 42, body weight gain (BW gain) and feed conversion ratio (FCR) were improved (p < 0.001) in probiotic supplemented birds versus infected control birds. The diversity, composition and predictive function of the intestinal microbial digesta changed with the infection but the supplementation of probiotic reduced these variations. Therefore, dietary supplementation of Bacillus subtilis DSM 32315 was beneficial in attenuating the negative effects of CP challenge on the performance and intestinal microbiota of broilers chickens.

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