Selenium supplementation increases wool growth and reduces faecal egg counts of Merino weaners in a selenium-deficient area
Pietro Celia, Jeff Eppleston, Annabel Armstrong, Bruce Watt
ANIMAL PRODUCTION SCIENCE | CSIRO PUBLISHING | Published : 2010
This paper reports on the effects of selenium supplementation on liveweight (LW), greasy fleece weight (GFW), fibre diameter (FD), impact of parasite infection and plasma glutathione peroxidase (GSH-Px) activity in weaned Merino sheep reared in a selenium-deficient area (blood GSH-Px<40 U/g Hb). At weaning, 208 Merino wethers were assigned to two groups: control (CTRL) and treatment (SEL). The SEL group was injected with 0.5 mL of Deposel, a slow release selenium injection. LW, blood and faecal samples were taken at 6-week intervals over a 24-week period. At the end of the trial the animals were shorn and GFW and FD measurements were taken. The SEL group had significantly higher (P<0.01) LW ..View full abstract
The authors would like to thank Peter Moore for the use of facilities and sheep throughout the trial, Kevin Thornberry for assisting with fleece weighing and fibre diameter measurements and Dave Palmer for assisting with faecal egg counts. We are grateful for the support provided by the Australian Wool Education Trust.