Effect of supplementation with barium selenate on the fertility, prolificacy and lambing performance of hill sheep

Six weeks before mating, the ewes on six hill farms were randomly assigned to receive either a subcutaneous injection of a long-acting supplement containing 50 mg/ml selenium as barium selenate, or no injected selenium. Before the treatment, the mean activity of glutathione peroxidase (GSHPx) in the...

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Veröffentlicht in:Veterinary record 2009-02, Vol.164 (9), p.265-272
Hauptverfasser: Muñoz, C., Carson, A. F., McCoy, M. A., Dawson, L. E. R., Irwin, D., Gordon, A. W., Kilpatrick, D. J.
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container_end_page 272
container_issue 9
container_start_page 265
container_title Veterinary record
container_volume 164
creator Muñoz, C.
Carson, A. F.
McCoy, M. A.
Dawson, L. E. R.
Irwin, D.
Gordon, A. W.
Kilpatrick, D. J.
description Six weeks before mating, the ewes on six hill farms were randomly assigned to receive either a subcutaneous injection of a long-acting supplement containing 50 mg/ml selenium as barium selenate, or no injected selenium. Before the treatment, the mean activity of glutathione peroxidase (GSHPx) in the ewes on the six farms ranged from 166 to 592 U/g haemoglobin (Hb) and their plasma selenium concentrations ranged from 0·60 to 1·61 μmol/l. Treated ewes had higher plasma selenium concentrations and higher GSHPx activities than control ewes during the study. Conception rates were higher in the treated ewes than in the control ewes. At six weeks, the lambs born to the treated ewes had higher plasma selenium and GSHPx levels than the controls. The treated ewes reared 9 per cent more lambs than the control ewes. The treated ewes had lower abortion rates, and higher liveweights and body condition scores than the controls. There were weak but positive associations between the plasma selenium and GSHPx levels of the ewes and their reproductive performance.
doi_str_mv 10.1136/vr.164.9.265
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subjects Abortion, Veterinary - epidemiology
Abortion, Veterinary - prevention & control
Agriculture
Animal reproduction
Animals
Animals, Newborn
Barium Compounds - pharmacology
Birth Weight
Blood
Dietary Supplements
Dose-Response Relationship, Drug
Farms
Female
Fertility - drug effects
Fertility - physiology
Glutathione Peroxidase - metabolism
Growth rate
Hemoglobins - metabolism
Infertility
Injections, Subcutaneous - veterinary
Laboratories
lambing rate
Litter Size
Livestock
Mortality
Plasma
Pregnancy
Pregnancy Rate
Random Allocation
reproductive efficiency
Risk factors
Selenic Acid
Selenium
Selenium - blood
Selenium Compounds - pharmacology
Sheep
Sheep - physiology
Vitamin E
title Effect of supplementation with barium selenate on the fertility, prolificacy and lambing performance of hill sheep
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