The retention and efficacy of soluble-glass boluses for providing selenium, cobalt and copper to sheep

References

• Agricultural Research Council Working Party . 1980 . The nutrient requirements of ruminant livestock , Commonwealth Agricultural Bureaux .
   Google Scholar
• Allen , W.M. , Drake , C.F. , Sansom , B.F. and Taylor , R.J. 1979 . Trace element supplementation with soluble glasses . Ann. Rech. Vet. , 10 : 356 – 8 .
   PubMedGoogle Scholar
• Allen , W.M. , Moore , P.R. and Sansom , B.F. 1981 . “ Controlled release glasses for selenium supplementation ” . In Trace Element Metabolism in Man and Animals - TEMA4 , Edited by: Howell , J.M. , Gawthorne , J.M. and White , C.L. 195 – 8 . Canberra : Australian Academy of Science . In
   Google Scholar
• Allen , W.M. , Sansom , B.F. , Drake , C.F. and Davies , D.C. 1978 . A new method for the prevention of trace element deficiencies . Vet. Sci. Comm. , 2 : 73 – 5 .
   Google Scholar
• Allen , W.M. , Sansom , B.F. , Gleed , P.T. , Mallinson , C.B. and Drake , C.F. 1984 . Boluses of controlled release glass for supplementing ruminants with copper . Vet. Rec. , 115 : 55 – 7 .
   PubMed Web of Science ®Google Scholar
• Allen , W.M. , Sansom , B.F. , Mallinson , C.B. , Stebbings , R.J. and Drake , C.F. 1985 . Boluses of controlled release glass for supplementing rumin-ants with cobalt . Vet. Rec. , 116 : 175 – 7 .
   PubMed Web of Science ®Google Scholar
• Andrews , E.D. , Grant , A.B. and Brunswick , L.F.C. 1974 . An assessment of the effects of ruminal selenium pellets given to young sheep grazing selenium-deficient pastures . N.Z. vet. J. , 22 : 46 – 50 .
   PubMedGoogle Scholar
• Care , A.G. , Anderson , P.J.B. , Illingworth , D.V. , Zervas , G. and Telfer , S.B. 1984 . “ The effect of soluble-glass on the copper, cobalt and selenium status of Suffolk cross lambs ” . In Trace Elements in Man and Animals - TEMA 5 , Edited by: Mills , C.F. , Bremner , I. and Chesters , J.K. 717 – 9 . Commonwealth Agricultural Bureaux . In
   Google Scholar
• Carlos , G. , Zervas , G. , Driver , P.M. , Anderson , P.J.B. , Illingworth , D.V. , Al-Tekrity , S.A. and Telfer , S.B. 1984 . “ The effect of soluble-glass boluses on the copper, cobalt and selenium status of Scottish Blackface ewes ” . In Trace Elements in Man and Animals - TEMA 5 , Edited by: Mills , C.F. , Bremner , I. and Chesters , J.K. 714 – 6 . Commonwealth Agricultural Bureaux . In
   Google Scholar
• Drake , C.F. UK Patent Application . GB 2057 420A . 1979 .
   Google Scholar
• Drake , C.F. and Allen , W.M. 1985 . The use of controlled-release glass for the controlled release of bioactive materials . Biochem. Soc. Trans. , 13 : 516 – 20 .
   PubMedGoogle Scholar
• Fraser , A.J. 1982 . Production related reference ranges . Surveillance , 9 : 4 – 7 .
   Google Scholar
• Grant , A.B. 1981 . Observations on analysis of selenium in plant and animal tissues and in soil samples . N.Z. Jl. Sci. , 24 : 65 – 79 .
   Web of Science ®Google Scholar
• Hudson , D.R. , Hunter , R.A. and Peter , D.W. 1981 . Studies with the intra-ruminal selenium pellet. II. The effect of grain size of selenium on the functional life of pellets in sheep . Aust. J. agric. Res. , 32 : 935 – 45 .
   Google Scholar
• Judson , G.J. , Brown , T.H. and Dewey , D.W. 1984 . “ Trace element supplements for sheep. Evaluation of copper oxide and a soluble glass bullet, impregnated with copper and cobalt ” . In Trace Elements in Man and Animals - TEMA 5 , Edited by: Mills , C.F. , Bremner , I. and Chesters , J.K. 729 – 32 . Commonwealth Agricultural Bureaux . In
   Google Scholar
• Judson , G.J. , Koh , T-S. , McFarlane , J.D. , Turnbull , R.K. and Kempe , B.R. 1984 . “ Copper and selenium supplements for cattle. Evaluation of the selenium bullet, copper oxide and the soluble glass bullet ” . In Trace Elements in Man and Animals - TEMA 5 , Edited by: Mills , C.F. , Bremner , I. and Chesters , J.K. 725 – 28 . Commonwealth Agricultural Bureaux . In
   Google Scholar
• Knott , P. , Algar , B. , Zervas , G. and Telfer , S.B. 1984 . “ Glass - a medium for providing animals with supplementary trace elements ” . In Trace Elements in Man and Animals - TEMA 5 , Edited by: Mills , C.F. , Bremner , I. and Chesters , J.K. 708 – 14 . Commonwealth Agricultural Bureaux . In
   Google Scholar
• Millar , K.R. and Albyt , A.T. 1984 . A comparison of vitamin B12 levels in the liver and serum of sheep receiving treatments used to correct cobalt deficiency . N.Z. vet. J. , 32 : 105 – 8 .
   PubMed Web of Science ®Google Scholar
• Millar , K.R. , Albyt , A.T. and Bond , G.C. 1984 . Measurement of vitamin B12 in the livers and sera of sheep and cattle and an investigation of factors influencing serum vitamin B12 levels in sheep . N.Z. vet. J. , 32 : 65 – 70 .
   PubMed Web of Science ®Google Scholar
• Millar , K.R. , Albyt , A.T. , Meads , W.J. and Sheppard , A.D. 1986 . Changes in blood levels of zinc, copper, selenium, glutathione peroxidase, vitamin B12 and total free thyroxine in sheep removed from pasture and held without food for 50 hours . N.Z. vet. J. , 34 : 1 – 3 .
   PubMed Web of Science ®Google Scholar
• Millar , K.R. and Andrews , E.D. 1964 . A method of preparing and detecting radioactive cobaltic oxide pellets and an assesment of their retention in sheep . N.Z. vet. J. , 12 : 9 – 12 .
   PubMedGoogle Scholar
• Millar , K.R. and Meads , W.J. 1984 . A simple restrainer for sheep for abdom-inal radiography . N.Z. vet. J. , 32 : 146 – 8 .
   PubMed Web of Science ®Google Scholar
• Millar , K.R. and Meads , W.J. 1987 . The efficacy of intraruminal pellets composed of elemental iron and selenium in sheep . N.Z. vet. J. , (In press)
   Google Scholar
• Simmons , W.J. 1975 . Determination of low concentrations of cobalt in small samples of plant material by flameless atomic absorption spec-trophotometry . Analyt. Chem. , 47 : 2015 – 8 .
   Web of Science ®Google Scholar
• Telfer , S.B. , Zervas , G. and Carlos , G. 1984 . Curing or preventing deficien-cies in copper, cobalt and selenium in cattle and sheep using Tracerglass . Can. J. Anim. Sci. , 64 : 234 – 35 .
   Google Scholar
• Telfer , S.B , Zervas , G. and Knott , P. UK Patent Application . GB 2116 424A . 1983 .
   Google Scholar
• Trengrove , C.L. and Judson , G.J. 1985 . Trace element supplementation of sheep: evaluation of various copper supplements and a soluble glass bullet containing copper, cobalt and selenium . Aust. vet. J. , 62 : 321 – 4 .
   PubMedGoogle Scholar
• Watkinson , J.H. 1966 . Fluorometric determination of selenium in biolog-ical material with 2, 3-diaminonaphthalene . Analyt. Chem. , 38 : 92 – 7 .
   PubMed Web of Science ®Google Scholar