J. Anim Sci.
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J. Anim Sci. 1977. 45:891-895.
© 1977 American Society of Animal Science
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Selenium and Vitamin E for Lambs with Trichostrongylosis1

G. M. J. Horton2

Faculty of Veterinary Science, University of Pretoria, Onderstepoort, Republic of South Africa

Abstract

Thirty-two 5-month-old Merino lambs were used to study the effects of trichostrongylosis on the utilization of a dystrophogenic diet after supplementation with vitamin E and selenium in a 2 x 2 factorial experiment. Lambs were infected with 50,000 Trichostrongylus colubriformis larvae and received vitamin E (300 mg {alpha}-Tocopherol) and selenium (3 mg Se) per os every 14 days.

Depressed feed intake per kg.75 (P<.05), body weight changes (P<.01) and digestibilities of dry matter and nitrogen (P<.05) were noted in infected lambs. No significant differences in performance or feed utilization were observed in the supplemented vs non-supplemented groups. Phosphorus and calcium metabolism were adversely affected by infection with the nematode. The absorption of both minerals was depressed (P<.001) and was associated with hypophosphoremia and normocalcemia.

These results show that neither intake nor digestibility was significantly improved in either infected or non-infected lambs fed a dystrophogenic diet following supplementation with selenium and vitamin E.

Footnotes

1 The author wishes to thank MSD (Pty) Ltd. for the provision of infective larvae, the lambs and facilities, Mrs. M. Bezuidenhout and Mr. R. Mithi for their technical assistance, and Dr. I. G. Horak for the fecal examinations. This study was financed by the University of Pretoria and by MSD (Pty) Ltd., Johannesburg.

2 Present address: Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan, Canada S7N OWO.






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Copyright © 1977 by the American Society of Animal Science.