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Effects of enzymatic hydrolysate of locust bean gum on digestibility, intestinal morphology and microflora of broilers
Author(s) -
Xie Jingjing,
Wang Zhongcheng,
Cui Hu,
Nie Hao,
Zhang Tietao,
Gao Xiuhua,
Qiao Yu
Publication year - 2020
Publication title -
journal of animal physiology and animal nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.651
H-Index - 56
eISSN - 1439-0396
pISSN - 0931-2439
DOI - 10.1111/jpn.13245
Subject(s) - hydrolysate , locust , locust bean gum , food science , biology , morphology (biology) , protein digestibility , chemistry , botany , biochemistry , zoology , hydrolysis , xanthan gum , materials science , rheology , composite material
To investigate the effects of different levels of enzymatic hydrolysate of dietary locust bean gum on nutrient digestibility, intestinal morphology and microflora of broilers, a total of 768 one‐day‐old Arbor Acres (AA) broiler chicks were randomly divided into 6 treatments with 8 replicates per treatment and 16 birds per replicate. The treatments were as follows: (1) CON, basal diet; (2) ANT, basal diet +62.5 mg/kg flavomycin; (3) LBG, basal diet +0.1% locust bean gum; (4) ELBG‐0.1, basal diet +0.1% enzymatic hydrolysate of LBG; (5) ELBG‐0.2, basal diet +0.2% enzymatic hydrolysate of LBG; and (6) ELBG‐0.3, basal diet +0.3% enzymatic hydrolysate of LBG. The digestibilities of ether extract, crude protein and dry matter were increased ( p < .01) in broilers fed the ELBG‐0.3 diet compared with the CON and LBG diets on day 21. Duodenal villus height and the ratio of the villus height to crypt depth were greater ( p < .01) in broilers fed the ELBG‐0.3 diet than the CON, ANT and LBG diets. Jejunum villus height was higher ( p < .05) in broilers fed the ELBG‐0.2 and ELBG‐0.3 diets than the CON diet. The number of caecal Escherichia coli was reduced ( p = .01) in broilers fed the ELBG‐0.2 and ELBG‐0.3 diets compared with the CON diet. The number of caecal Lactobacilli was greater ( p < .05) in broilers fed the ELBG‐0.3 diet than the CON and ANT diets. In summary, the addition of 0.3% locust bean enzymatic hydrolysate can increase the surface area of intestinal villi and the number of beneficial bacteria, inhibit the proliferation of harmful bacteria, maintain the balance of intestinal microflora and improve the digestibility of nutrients.