A long-acting injectable Se/Vitamin B12 product to
prevent Se and Co deficiency in lambs
N.D. GRACE AND S.O. KNOWLES
AgResearch Limited, Grasslands Research Centre, Private Bag
11008, Palmerston North, New Zealand
NZSAP 2003 Abstract No. 6
Proceedings of the New Zealand Society of Animal Production
63: 18-20
The efficacy of a novel injectable formulation containing barium
selenate (BaSeO4) and microencapsulated Vitamin
B12 was evaluated in groups of lambs (n=10) over 246 days in
terms of changes in blood Se and serum Vitamin B12
concentrations as well as growth responses. Mean blood Se and serum
Vitamin B12 concentrations of the untreated control lambs
were 125 ± 9 nmol/L and 508 ± 21 pmol/L, respectively. The
formulation increased blood Se to 2100 nmol/L at day 64 before
decreasing to 761 nmol/L at day 246. Likewise, serum Vitamin
B12 reached a peak of 1950 pmol/L at day 31 before decreasing
to 577 pmol/L at day 246. The treatment significantly increased
(P<0.05) daily weight gains from 125 ± 4 to 136 ± 4
g/day. An injectable Se/Vitamin B12 product containing 12 mg
Se as BaSeO4 and 3 mg Vitamin B12 per dose administered at
docking was effective in increasing and maintaining the Se and Vitamin
B12 status of lambs for at least 246 days.
Keywords: NZSAPAB;
lambs; blood; serum; growth response; selenium; Vitamin
B12
Last Updated 8/07/2004
