A comparison of vitamin B 12 concentrations in livers and kidneys from cobalt‐treated and mildly cobalt‐deficient lambs
Year: 1962
Type: article
Abstract: Vitamin B 12 concentrations were determined in the livers and kidneys of (1) lambs treated with cobaltic oxide pellets and (2) untreated lambs grazing cobalt‐deficient pastures. Vitamin B 12 concentrations in livers and in kidnevs of cobalt‐treated lambs ranged from 0.44 to 1.6 µg;/g (mean 0.84 µg/g) and from 0.25 to 0.75 µg/g (mean 0.52 µg/g) respectively. In livers and kidneys of presumed mildly cobalt‐deficient lambs concentrations ranzed from 0.09 to 0.16 µg/g (mean 0.12 µg/g) and from 0.19 to 0.26 µg/g (mean 0.23 µg/g) respectively. For cobalt‐sufficient lambs liver/kidney vitamin B 12 ratios were all greater than one. For cobalt‐deficient lambs ratios were all less than one. Factors that may limit the diagnostic value of vitamin B 12 concentrations, particularly in kidney, are discussed.
Authors: E. D. Andrews, L. I. Hart
Institution: Hannah Research Foundation
Language: English
Topic: Animal Nutrition and Health
Subfield: Plant Science
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W1969026331