Mineral supplementation of lambing ewes grazing dual-purpose wheatS. R. McGrath A E F , M. S. Bhanugopan A E , H. Dove B , E. H. Clayton C E , J. M. Virgona D E and M. A. Friend A E
A School of Animal and Veterinary Sciences, Charles Sturt University, PO Box 588, Wagga Wagga, NSW 2678, Australia.
B CSIRO Plant Industry, GPO Box 1600, Canberra, ACT 2601, Australia.
C NSW Department of Primary Industries, Wagga Wagga Agricultural Institute, Pine Gully Road, Wagga Wagga, NSW 2650, Australia.
D School of Agricultural and Wine Sciences, Charles Sturt University, PO Box 588, Wagga Wagga, NSW 2678, Australia.
E Graham Centre for Agricultural Innovation, Locked Bag 588, Wagga Wagga, NSW 2678, Australia.
F Corresponding author. Email: email@example.com
Animal Production Science 55(4) 526-534 https://doi.org/10.1071/AN13179
Submitted: 7 May 2013 Accepted: 30 December 2013 Published: 18 February 2014
Lambing ewes were grazed on dual-purpose wheat in two experiments in 2010 and 2011 with or without access to a mineral supplement. The calcium, magnesium and sodium content of wheat forage was below the requirements of ewes during late pregnancy and lactation; however, no clinical cases of hypocalcaemia or hypomagnesaemia were observed in either experiment. Blood serum assays identified eight hypocalcaemic ewes and one hypomagnesaemic ewe in Experiment 1, and one hypocalcaemic ewe in Experiment 2, and the provision of a mineral supplement comprising of magnesium oxide, calcium carbonate and coarse salt had no effect on blood magnesium, total calcium, phosphorus or sodium. Lamb birthweight and survival were not affected by provision of the mineral supplement in either experiment; however, the growth rate to marking (mean 38 ± 10 days of age) of twin-born lambs was higher in Experiment 1 when the supplement was provided to ewes grazing wheat (259 vs 243 g/head.day; P = 0.002).
ReferencesBlumer CC, Madden FJ, Walker DJ (1939) Hypocalcaemia, grass tetany or grass staggers in sheep. Australian Veterinary Journal 15, 24–27.
| Hypocalcaemia, grass tetany or grass staggers in sheep.CrossRef | 1:CAS:528:DyaA1MXkvVOhtg%3D%3D&md5=a8b070ea7816d0c99f54c2275c9fc208CAS |
Bohman VR, Horn FP, Stewart BA, Mathers AC, Grunes DL (1983) Wheat pasture poisoning. I. An evaluation of cereal pastures as related to tetany in beef cows. Journal of Animal Science 57, 1352–1363.
BOM (2011) Climate data online. Available at http://www.bom.gov.au/climate/data/ [Verified 13 January 2014]
Braithwaite GD, Glascock RF, Riazuddin S (1969) Calcium metabolism in lactating ewes. The British Journal of Nutrition 23, 827–834.
| Calcium metabolism in lactating ewes.CrossRef | 1:CAS:528:DyaE3cXoslOksw%3D%3D&md5=a12dc3af2619e28df69ab26b7e87b432CAS | 5390540PubMed |
Braithwaite GD, Glascock RF, Riazuddin S (1970) Calcium metabolism in pregnant ewes. The British Journal of Nutrition 24, 661–670.
| Calcium metabolism in pregnant ewes.CrossRef | 1:CAS:528:DyaE3cXkvFKitbY%3D&md5=472b5df6e294c497de780c002572340bCAS | 5528431PubMed |
Cayley J, Bird P (1996) ‘Techniques for measuring pastures.’ (Agriculture Victoria: Hamilton)
CSIRO (2007) Minerals. In ‘Nutrient requirements of domesticated ruminants’. (Eds M Freer, H Dove, JV Nolan) pp. 116–172. (CSIRO Publishing: Melbourne)
Dove H (2007) Mineral nutrition of sheep grazing dual-purpose wheats. In ‘GRDC-sponsored Grains Research Technical Update, Wagga Wagga, NSW, 13–14 February’. (Eds D Kaminskas, S Rawlings) pp. 71–75. (Jon Lamb Communications: St Peters, SA)
Dove H, McMullen KG (2009) Diet selection, herbage intake and liveweight gain in young sheep grazing dual-purpose wheats and sheep responses to mineral supplements. Animal Production Science 49, 749–758.
| Diet selection, herbage intake and liveweight gain in young sheep grazing dual-purpose wheats and sheep responses to mineral supplements.CrossRef | 1:CAS:528:DC%2BD1MXhtFelsbvL&md5=3bd034d109510d8e57c297e52b51cdffCAS |
Dove H, Kelman WM, Kirkegaard JA, Sprague SJ (2012) Impact of magnesium–sodium supplementation on liveweight gains of young sheep grazing dual-purpose cereal or canola crops. Animal Production Science 52, 1027–1035.
| Impact of magnesium–sodium supplementation on liveweight gains of young sheep grazing dual-purpose cereal or canola crops.CrossRef | 1:CAS:528:DC%2BC38XhsVCgtbrO&md5=d7abbbc6733a12882406eae5fd3914ddCAS |
Elias E, Shainkin-Ketenbaum R (1990) Hypocalcaemia and serum levels of inorganic phosphorus, magnesium parathyroid and calcitonin hormones in the last month of pregnancy in Awassi fat-tail ewes Reproduction, Nutrition, Development 30, 693–699.
| Hypocalcaemia and serum levels of inorganic phosphorus, magnesium parathyroid and calcitonin hormones in the last month of pregnancy in Awassi fat-tail ewesCrossRef | 1:CAS:528:DyaK3MXltlegtbc%3D&md5=bd1ada56d44b98bed2f6eaef02b798d3CAS | 2080991PubMed |
Franklin MC, Reid RL, Johnstone IL (1948) Studies on dietary and other factors affecting the serum-calcium levels of sheep. Bulletin No. 240, Council for Scientific and Industrial Research, Australia.
Greene LW, Fontenot JP, Webb KE (1983) Effect of dietary potassium on absorption of magnesium and other macroelements in sheep fed different levels of magnesium. Journal of Animal Science 56, 1208–1213.
Hatcher S (2006) Capturing the production potential of twin-bearing merino ewes and their progeny. Lifetime Wool 2, 2–4.
Haydock K, Shaw N (1975) The comparative yield method for estimating dry matter yield of pasture. Australian Journal of Experimental Agriculture 15, 663–670.
Isbell RF (2002) ‘The Australian soil classification.’ (CSIRO Publishing: Melbourne)
Jefferies BC (1961) Body condition scoring and its use in management. Tasmanian Journal of Agriculture 32, 19–21.
Joyce JP, Brunswick LCF (1975) Sodium supplementation of sheep and cattle fed lucerne. New Zealand Journal of Experimental Agriculture 3, 299–304.
| Sodium supplementation of sheep and cattle fed lucerne.CrossRef | 1:CAS:528:DyaE28XhtlCgs7k%3D&md5=4b439891092acbc333df8f86d9361e1dCAS |
Kempt A, ‘t Hart J (1957) Grass tetany in grazing milking cows. Netherlands Journal of Agricultural Science 5, 4–17.
Khorasani GR, Armstrong DG (1990) Effect of sodium and potassium level on the absorption of magnesium and other macrominerals in sheep. Livestock Production Science 24, 223–235.
| Effect of sodium and potassium level on the absorption of magnesium and other macrominerals in sheep.CrossRef |
Larsen JWA, Constable PD, Naphthine DV (1986) Hypocalcaemia in ewes after drought. Australian Veterinary Journal 63, 25–26.
| Hypocalcaemia in ewes after drought.CrossRef | 1:STN:280:DyaL287lvVGqsA%3D%3D&md5=47cdbac403cd2212ef3f15102a5da31dCAS |
Martens H, Kubel OW, Gäbel G, Honig H (1987) Effects of low sodium intake on magnesium metabolism of sheep. The Journal of Agricultural Science 108, 237–243.
| Effects of low sodium intake on magnesium metabolism of sheep.CrossRef | 1:CAS:528:DyaL2sXktlynsrc%3D&md5=821a30c95fb26dc14661d97998273e43CAS |
McCoy MA, Bingham V, Hudson AJ, Cantley L, Hutchinson T, Davison G, Kennedy DG, Fitzpatrick DA (2001) Postmortem biochemical markers of experimentally induced hypomagnesaemic tetany in sheep. The Veterinary Record 148, 233–237.
| Postmortem biochemical markers of experimentally induced hypomagnesaemic tetany in sheep.CrossRef | 1:STN:280:DC%2BD3M7pslGrsw%3D%3D&md5=e02848d66bb4bd221675c8d5dbd3ae15CAS | 11289550PubMed |
McGrath SR, Lievaart JJ, Virgona JM, Bhanugopan MS, Friend MA (2013) Factors involved in high ewe losses in winter lambing flocks grazing dual-purpose wheat in southern New South Wales: a producer survey. Animal Production Science 53, 458–463.
| Factors involved in high ewe losses in winter lambing flocks grazing dual-purpose wheat in southern New South Wales: a producer survey.CrossRef |
McMullen KG, Virgona JM (2009) Dry matter production and grain yield from grazed wheat in southern New South Wales. Animal Production Science 49, 769–776.
| Dry matter production and grain yield from grazed wheat in southern New South Wales.CrossRef |
Miller RO (Ed.) (1998) Microwave digestion of plant material in a closed vessel. In ‘Handbook of reference methods for plant analysis’. pp. 69–74. (CRC Press: Washington DC)
Miller DR, Dean GJ, Ball PD (2010) Influence of end-grazing forage residual and grazing management on lamb growth performance and crop yield from irrigated dual-purpose winter wheat. Animal Production Science 50, 508–512.
| Influence of end-grazing forage residual and grazing management on lamb growth performance and crop yield from irrigated dual-purpose winter wheat.CrossRef |
Morris ST, McCutcheon SN, Parker WJ, Blair HT (1994) Effect of sward surface height on herbage intake and performance of lactating ewes lambed in winter and continuously stocked on pasture. The Journal of Agricultural Science 122, 471–482.
| Effect of sward surface height on herbage intake and performance of lactating ewes lambed in winter and continuously stocked on pasture.CrossRef |
O’Connor CE, Jay NP, Nicol AM, Beatson PR (1985) Ewe maternal behaviour score and lamb survival. Proceedings of the New Zealand Society of Animal Production 45, 159–162.
Packer EL, Clayton EH, Cusack PMV (2011) Rumen fermentation and liveweight gain in beef cattle treated with monensin and grazing lush forage. Australian Veterinary Journal 89, 338–345.
Penning PD, Parsons AJ, Orr RJ, Treacher TT (1991) Intake and behaviour responses by sheep to changes in sward characteristics under continuous stocking. Grass and Forage Science 46, 15–28.
| Intake and behaviour responses by sheep to changes in sward characteristics under continuous stocking.CrossRef |
Robertson SM, Friend MA, Broster JC, King BJ (2011) Survival of twin lambs is increased with shrub belts. Animal Production Science 51, 925–938.
| Survival of twin lambs is increased with shrub belts.CrossRef |
Sansom BF, Bunch KJ, Dew SM (1982) Changes in plasma calcium, magnesium, phosphorus and hydroxyproline concentrations in ewes from twelve weeks before until three weeks after lambing. The British Veterinary Journal 138, 393–401.
Sargison N (2009) ‘Sheep flock health: a planned approach.’ (Wiley: Hoboken, NJ)
Suttle NF (2010) ‘Mineral nutrition of livestock.’ (CAB International: Wallingford)
Todd JR (1969) Magnesium metabolism in ruminants. Review of current knewledge. In ‘Trace mineral studies with isotopes in domestic animals’. pp. 131–140. (International Atomic Energy Agency: Vienna)
Treacher TT, Caja G (2002) Nutrition during lactation. In ‘Sheep nutrition’. (Eds M Freer, H Dove) pp. 213–236. (CAB International: Wallingford, UK).
Virgona JM, Gummer FAJ, Angus JF (2006) Effects of grazing on wheat growth, yield, development, water use, and nitrogen use. Australian Journal of Agricultural Research 57, 1307–1319.
| Effects of grazing on wheat growth, yield, development, water use, and nitrogen use.CrossRef |
Watt B (2006) Hypocalcaemia in lactating drought fed ewes supplemented with recommended levels of calcium. Australian Society of Animal Production 26th Biennial Conference 2006 Short Communication number 10. Available at http://www.asap.asn.au/livestocklibrary/2006/SC10-watt.pdf [Verified 30 January 2014]