An evaluation of a controlled release system for selenium in lambs

Authors: Grace ND, Vincent G, Venning M
Publication: New Zealand Veterinary Journal, Volume 42, Issue 2, pp 63-65, Apr 1994
Publisher: Taylor and Francis

Animal type: Livestock, Production animal, Ruminant, Sheep
Subject Terms: Animal remedies/veterinary medicines, Anthelmintics, Parasite control, Parasites - internal, Diet/rations/food, Treatment/therapy, Nutrition/metabolism, Selenium, Trace elements
Article class: Scientific Article

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Abstract: The efficacy of 100-day controlled release anthelmintic capsules containing Se for increasing and maintaining the Se status of lambs was evaluated. Capsules containing either 7.7 or 13.9 mg of Se increased the mean blood Se concentrations from 1.50 ± 8.4 nmol/l in the unsupplemented lambs to 440 ± 29.8 and 990 ± 83.4 nmol/l respectively 100 days after their administration. Blood Se concentrations then declined to 250 ± 21.5 and 380 ± 50.1 nmol/l respectively by day 210. The addition of 13.9 mg of Se to a 100-day controlled release anthelmintic capsule is an effective method of protecting lambs from Se deficiency for at least 180 days.

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