Cobalt supplementation in pre-weaned beef calves affects humoral immune response, feedlot health, and final carcass characteristics

Authors

  • Bob Sager Montana State University, Department of Animal and Range Sciences, Bozeman, MT 59717

DOI:

https://doi.org/10.21423/aabppro20143743

Keywords:

bovine respiratory disease, BRD, beef cattle, pre-weaning, cobalt, Co, B12, antibodies, immune response

Abstract

Economic losses from bovine respiratory disease (BRD) in beef cattle are $2 billion annually. Mineral supplementation during pre-weaning has potential to reduce sickness and improve health. Mineral cobalt (Co) is used by rumen-inhabiting microbes for the synthesis of vitamin B12, which is a cofactor for vital metabolic pathways in tissue carbohydrate and lipid metabolism required for maintenance and growth. Vitamin B12 is also vital for B cell proliferation to form plasma cells that secrete antibodies. Recent studies have shown that Co supplementation levels above NRC-recommended levels enhanced antibody response in weaned beef calves. The objective of this study was to evaluate if an oral Co (30 g CoO4) sustained-release bolus dosed preweaning affects humoral immune response during the post-weaning feeding period, reduces the incidence of BRD, and improves carcass characteristics.

Author Biography

Bob Sager, Montana State University, Department of Animal and Range Sciences, Bozeman, MT 59717

PhD candidate

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Published

2014-09-18

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