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http://dx.doi.org/10.5713/ab.22.0033

Effect of dietary metallo-protease and Bacillus velezensis CE 100 supplementations on growth performance, footpad dermatitis and manure odor in broiler chickens  

Park, Cheol Ju (Department of Animal Science, Chonnam National University)
Sun, Sang Soo (Department of Animal Science, Chonnam National University)
Publication Information
Animal Bioscience / v.35, no.10, 2022 , pp. 1628-1634 More about this Journal
Abstract
Objective: This study focused on the effect of dietary metallo-protease and Bacillus velezensis CE 100 on growth performance, carcass parameters, intestinal microflora, footpad dermatitis (FPD), and manure odor in broiler chickens. Methods: One hundred-ten (two-day-old Ross 308) broiler chicks were randomly assigned to five groups with two replicate pens. The dietary treatments were divided to control, metallo-protease groups (A1, added with 0.1%; A2, added with 0.2%) and B. velezensis CE 100 groups (B1, added with 0.5%; B2, added with 1.0%). Results: The feed intake was decreased in A1 and B2 compared to the other group (p<0.05). The liver weight was lower in B2 than in A2 (p<0.05). The Salmonella in the cecum was decreased in A2 compared to control and A1 (p<0.05). However, the lactic acid bacteria were increased in all treatments (p<0.05). The litter moisture content was decreased in A2, B1, and B2 (p<0.05). The litter quality visual score was increased in all treatments (p<0.05). The FPD score and prevalence were reduced in all treatments (p<0.05). The (CH3)2S emission was decreased in all treatments (p<0.05). Conclusion: The present study indicated that both additives improve litter quality and reduce the incidence of FPD. These findings suggest that dietary metallo-protease and B. velezensis CE 100 have the potential to improve the broiler chickens' welfare.
Keywords
Animal Welfare; Broiler; Enzyme; Footpad Dermatitis; Manure Odor; Probiotics;
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Times Cited By KSCI : 1  (Citation Analysis)
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