数字农科院2.0

Effects of Clostridium beijerinckii-based direct-fed supplementation on growth performance, diarrhea frequency, plasma metabolites, and fecal microbiota of dairy calves

文献类型： 外文期刊

作者： Guo, Cheng;Yao, Yuling;Zhang, Yanmei;Abdelsattar, Mahmoud M.;Diao, Qiyu;Tu, Yan;Zhang, Naifeng;Li, Yang;Bi, Yanliang

作者机构：

关键词： calf;diarrhea;Clostridium beijerinckii;growth performance;gut microbiota

期刊名称： JOURNAL OF DAIRY SCIENCE

ISSN： 0022-0302

年卷期： 2025 年 109 卷 1 期

页码：

收录情况： SCIE（2025版）

摘要： The high prevalence of diarrhea in calves raises serious welfare concerns and imposes substantial economic losses on dairy farms. Probiotic strains that produce butyric acid may lower diarrhea incidence and improve gut health. This study evaluated the effects of direct-fed Clostridium beijerinckii R8 on growth performance, plasma biochemistry, and fecal microbiota in neonatal calves. Sixty newborn female calves were blocked by birth weight and randomly allocated to 4 treatments: (1) control (0 cfu/d), (2) low dose (1 x 10(9) cfu/d), (3) medium dose (1 x 10(10) cfu/d), and (4) high dose (1 x 10(11) cfu/d). Diarrhea frequency and duration exhibited a significant quadratic response to supplementation, with the lowest values observed at 1 x 10(10) cfu/d. Quadratic treatment contrasts were significant for growth performance. Calves receiving 1 x 10(10) cfu/d achieved the highest BW, ADG, DMI, body diagonal length, and hip width, together with the lowest feed conversion ratio. Plasma total cholesterol, high-density lipoprotein, BUN, and insulin increased linearly with dose. At 28 d of age, IgG, IgM, total antioxidant capacity, superoxide dismutase, and catalase levels showed linear increases, whereas malondialdehyde declined linearly as dose increased. Fecal microbiota showed both dose-dependent and temporal shifts. On d 28, Lachnoclostridium and Collinsella decreased linearly with dose, whereas Eubacterium_coprostanoligenes_group and Escherichia-Shigella displayed quadratic declines, reaching their lowest relative abundance at 1 x 10(10) cfu/d. By d 56, Lachnospiraceae_NK4A136_group and Intestinimonas increased linearly with dose, whereas Bifidobacterium and Lactobacillus showed quadratic responses, with their lowest abundance at 1 x 10(11) cfu/d. In conclusion, supplementation of 1 x 10(10) cfu/d Clostridium beijerinckii R8 optimally reduced diarrhea, enhanced growth performance, and improved intestinal health by modulating the gut microbiota.

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