The efficacy of a subcutaneous injection of soluble Vitamin B12 in lambs.
1998
Abstract Aims. To assess the efficacy of a soluble Vitamin B12 injection in lambs by measuring changes in the serum and liver Vitamin B12 concentrations. Methods. Thirty-six lambs were injected subcutaneously with 2 mg of soluble Vitamin B12 while another group of 36 served as untreated controls. Blood and liver biopsy samples for Vitamin B12 determinations were collected just before the injection and at days 1, 2, 5, 8, 16, 24, 30 and 45. Results. The serum Vitamin B12 concentrations of the Vitamin B12 treated lambs increased rapidly compared to the untreated lambs. Concentrations peaked at day 2, decreased rapidly to day 8, and then decreased more slowly until day 24 when there were no longer differences between the groups. Liver Vitamin B12 concentrations of the Vitamin B12 treated lambs were significantly greater over days 8-24. Conclusion. A subcutaneous injection of 2 mg of soluble Vitamin B12 was effective in increasing and maintaining the Vitamin B12 status of lambs for about 24 days. Clinical sig...
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