Blood thiamine levels in normal cattle and sheep at pasture.
Analysis of whole blood samples from 174 cattle and, 174 sheep from 3 geographical regions of New Zealand over a 10 month period showed a mean (range) thiamine level of 122 nmol/l (71-237 nmol/l) for cattle and 118 nmol/l (67-227 nmol/l) for sheep. Regional and seasonal differences were noted with levels tending to rise over the summer period. A reference range of 75-185 nmol/l is proposed for both cattle and sheep to cover these variations. Levels below 50 nmol/l are considered indicative of deficiency.
Hill
J H
JH
Central Animal Health Laboratory, MAFQual, Wallaceville Animal Research Centre, Private Bag, Upper Hutt, New Zealand.
Rammell
C G
CG
Forbes
S
S