Evaluation of probiotic Bacillus coagulans DSM 32016 effect on growth performance, nutrient digestibility, health indices, and blood metabolites of Holstein dairy calves

Document Type : Research Paper

Authors

Department of Animal Science, Faculty of Agriculture, School of Agriculture and Natural Resources, University of Tehran, karaj, Iran

10.22059/ijas.2024.377864.654017

Abstract

The present experiment was designed to investigate the effects of probiotic Bacillus coagulans DSM 32016 on growth performance, nutrient digestibility, health indicators and serum metabolites. Sixty Holstein calves, with from day 4 to day 73 of age were divided to the following two treatments as controls: no probiotic supplementation, BC: 600 mg of probiotic per kg of feed + 600 mg of probiotic per kg of milk. Was evaluated in two phases, 1 to 50 days and 51 to 70 days. Compared to the control, dry matter consumption, average daily increase, feed efficiency, and Height change did not differ significantly while the digestibility of nutrients was affected by probiotics (P< 0.05). Calves that received the probiotic, NDF digestibility had decreased compared to the control (P<0.05), while NFC increased with probiotic supplementation (P< 0.05). Health indicators and faecal score were more favorable with probiotic supplement than the control in both periods (P< 0.05). The number of days treated with antibiotics was similar between the groups. However, days with fever in both periods, and rectal temperature on days 51 to 70 were significantly reduced. Compared to the control, the level of glucose, beta-hydroxybutyrate and lymphocytes increased, and the level of neutrophils and the ratio of neutrophils to lymphocytes decreased during days 51 to 70 with the probiotic supplement. Therefore, the use of probiotic Bacillus coagulans DSM 32016 in milk and feed increases the digestibility of NFC and improves the faecal score and health indicators and increases the level of lymphocytes and immunity.

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Articles in Press, Accepted Manuscript
Available Online from 03 December 2024
  • Receive Date: 10 August 2024
  • Revise Date: 20 October 2024
  • Accept Date: 20 October 2024