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Serum and red cell folate and serum vitamin B 12 levels in horses
Author(s) -
ROBERTS M. C.
Publication year - 1983
Publication title -
australian veterinary journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.382
H-Index - 59
eISSN - 1751-0813
pISSN - 0005-0423
DOI - 10.1111/j.1751-0813.1983.tb05906.x
Subject(s) - vitamin b12 , horse , malabsorption , folic acid , vitamin , radioimmunoassay , cyanocobalamin , endocrinology , medicine , intramuscular injection , biology , zoology , paleontology
SUMMARY Vitamin B12 and folate concentrations were determined by radioimmunoassay in groups of horses in Queensland. Highest serum vitamin B 12 levels were found in supplemented performance horses. These, together with pastured horses that included pregnant and lactating mares, had significantly greater serum folate activity than permanently stabled animals. The range of red cell folate concentrations was much narrower in horses in training than from any other group. Red cell folate may be a better indicator of a horse's folate status than the serum folate value. Vitamin B 12 and folate concentrations were highest in spring and summer. Small intestinal dysfunction in 2 horses was not associated with vitamin B 12 or folate malabsorption. Serum folate levels returned to normal 24 h after intramuscular injections of 75 to 150 mg folic acid, whereas serum vitamin B 12 values remained elevated for at least one week following injections of 8 to 10 mg to non‐supplemented horses.