4.4 Article

Effects of sodium humate and glutamine combined supplementation on growth performance, diarrhea incidence, blood parameters, and intestinal microflora of weaned calves

Journal

ANIMAL SCIENCE JOURNAL
Volume 92, Issue 1, Pages -

Publisher

WILEY
DOI: 10.1111/asj.13584

Keywords

blood parameter; dairy calf; diarrhea incidence; intestinal microbiota; sodium humate and glutamine

Funding

  1. National Key Research and Development Program of China [2016YFD051310]

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The study demonstrated that combined supplementation with HNa and Gln can significantly improve the growth performance, immune status, antioxidant capacity, and intestinal microflora of weaned calves while reducing the incidence of diarrhea.
This experiment was conducted to investigate the effects of sodium humate (HNa) and glutamine (Gln) alone or combined supplementation on growth performance, diarrhea incidence, blood parameters, and intestinal microflora of weaned Holstein calves. In a 14-day experiment, 40 calves at 51 +/- 3 days of age were randomly allocated to four treatment groups: (1) NC (basal diet), (2) NC + 5% HNa, (3) NC + 1% Gln, and (4) NC + 5% HNa + 1% Gln. Calves combined supplementation with HNa and Gln had a higher (P < .05) ADG, serum concentration of glucose (GLU), IgA, and IgG but lower fecal scores, diarrhea incidence, serum concentration of TNF-alpha, and IL-10 compared with NC group (P < .05). Compared with NC group, HNa + Gln group showed higher (P < .05) serum GSH and T-AOC activities but lower (P < .05) concentration of MDA and D-lac. Furthermore, the abundances of Prevotella ruminicola, Bifidobacterium, and Lactobacillus in rectal digesta were increased (P < .05), but the Escherichia coli was significantly decreased. In conclusion, combined supplementation with HNa and Gln can effectively improve the immune status, antioxidant capacity, and intestinal microflora of the weaned calves while reducing diarrhea incidence.

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