The influence of the number of lambs present on the suckling behaviour of triplet-rearing ewes at pasture

References

• Alexander G. 1962. Temperature regulation in the new-born lamb. IV. The effect of wind and evaporation of water from the coat on metabolic rate and body temperature. Australian Journal of Agricultural Research. 13:82–99. doi:10.1071/AR9620082.
   Google Scholar
• Alexander G, Williams D. 1964. Maternal facilitation of sucking drive in newborn lambs. Science. 146:665–666. doi:10.1126/science.146.3644.665.
   PubMed Web of Science ®Google Scholar
• Amer PR, McEwan JC, Dodds KG, Davis GH. 1999. Economic values for ewe prolificacy and lamb survival in New Zealand sheep. Livestock Production Science. 58:75–90. doi:10.1016/S0301-6226(98)00192-4.
   Google Scholar
• Anonymous. 2021. Manual of surface weather observations, Meterological Service of Canada.
   Google Scholar
• Atroshi F, Österberg S. 1984. Observation on sucking behaviour of finnsheep lambs with particular reference to the effect of litter size. Zentralblatt für Veterinärmedizin Reihe A. 31:280–286. doi:10.1111/j.1439-0442.1984.tb01284.x.
   PubMedGoogle Scholar
• Champion RA, Rutter SM, Penning PD, Rook AJ. 1994. Temporal variation in grazing behaviour of sheep and the reliability of sampling periods. Applied Animal Behaviour Science. 42:99–108. doi:10.1016/0168-1591(94)90150-3.
   Web of Science ®Google Scholar
• Chappell PR. 2015. The climate and weather of Manawatu-Wanganui. NIWA Science and Technology Series. p. 40. Number 66.
   Google Scholar
• Dalton DC, Knight TW, Johnson DL. 1980. Lamb survival in sheep breeds on New Zealand hill country. New Zealand Journal of Agricultural Research. 23:167–173. doi:10.1080/00288233.1980.10430783.
   Web of Science ®Google Scholar
• Dwyer CM. ed. 2008. The welfare of sheep. Dordrecht: Springer. xiv, 366 p.
   Google Scholar
• Dwyer CM, Lawrence AB. 2000. Effects of maternal genotype and behaviour on the behavioural development of their offspring in sheep. Behaviour. 137:1629–1654. doi:10.1163/156853900502754.
   Web of Science ®Google Scholar
• Ekesbo I, Gunnarsson S. 2018. Farm animal behaviour: characteristics for assessment of health and welfare. Wallingford (UK): CABI.341.
   Google Scholar
• Everett-Hincks JM, Dodds KG. 2008. Management of maternal-offspring behavior to improve lamb survival in easy care sheep systems. Journal of Animal Science. 86:E259–E270. doi:10.2527/jas.2007-0503.
   PubMedGoogle Scholar
• Ewbank R. 1964. Observations on the suckling habits of twin lambs. Animal Behaviour. 12:34–37. doi:10.1016/0003-3472(64)90099-5.
   Web of Science ®Google Scholar
• Ewbank R. 1967. Nursing and suckling behaviour amongst Clun forest ewes and lambs. Animal Behaviour. 15:251–258. doi:10.1016/0003-3472(67)90007-3.
   PubMed Web of Science ®Google Scholar
• Fogarty NM, Hall DG, Holst PJ. 1992. The effect of nutrition in mid pregnancy and ewe liveweight change on birth weight and management for lamb survival in highly fecund ewes. Australian Journal of Experimental Agriculture. 32:1–10. doi:10.1071/EA9920001.
   Google Scholar
• Friard O, Gamba M. 2016. BORIS: a free, versatile open-source event-logging software for video/audio coding and live observations. Methods in Ecology and Evolution. 7:1325–1330. doi:10.1111/2041-210X.12584.
   Web of Science ®Google Scholar
• Gordon K, Siegmann M. 1991. Suckling behavior of ewes in early lactation. Physiology & Behavior. 50:1079–1081. doi:10.1016/0031-9384(91)90442-Q.
   PubMed Web of Science ®Google Scholar
• Hatcher S, Atkins KD, Safari E. 2009. Phenotypic aspects of lamb survival in Australian Merino sheep. Journal of Animal Science. 87:2781–2790. doi:10.2527/jas.2008-1547.
   PubMed Web of Science ®Google Scholar
• Hight GK, Jury KE. 1970. Hill country sheep production. II. Lamb mortality and birth weights in Romney and Border Leicester X Romney flocks. New Zealand Journal of Agricultural Research. 13:735–752. doi:10.1080/00288233.1970.10430507.
   Web of Science ®Google Scholar
• Hinch GN. 1989. The sucking behaviour of triplet, twin and single lambs at pasture. Applied Animal Behaviour Science. 22:39–48. doi:10.1016/0168-1591(89)90078-6.
   Web of Science ®Google Scholar
• Hinch GN, Brien F. 2014. Lamb survival in Australian flocks: a review. Animal Production Science. 54:656–666. doi:10.1071/AN13236.
   Web of Science ®Google Scholar
• Hinch GN, Crosbie SF, Kelly RW, Owens JL, Davis GH. 1985. Influence of birth-weight and litter size on lamb survival in high fecundity Booroola-Merino crossbred flocks. New Zealand Journal of Agricultural Research. 28:31–38. doi:10.1080/00288233.1985.10426996.
   Web of Science ®Google Scholar
• Kerslake JI, Everett-Hincks JM, Campbell AW. 2005. Lamb survival: a new examination of an old problem. Proceedings of the New Zealand Society of Animal Production. 65:13–18.
   Google Scholar
• Lynch JJ, Hinch GN, Adams DB. 1992. The behaviour of sheep: biological principles and implications for production. Wallingford: CAB International. 237 p.
   Google Scholar
• Manno MC, Rodrigues L, Lima K, Carvalhal MVL, Rodrigues Filho SS, Costa GL, Monteiro ANG, Barreto AN. 2019. Behavioral aspects of Santa Inês sheep kept in pasture in a tropical rainforest climate. Ciência Rural. 49:e20180033. doi:10.1590/0103-8478cr20180033.
   Web of Science ®Google Scholar
• McCutcheon SN, Holmes CW, McDonald MF, Rae AL. 1983. Resistance to cold stress in the newborn lamb 1. Responses of Romney, Drysdale × Romney, and Merino lambs to components of the thermal environment. New Zealand Journal of Agricultural Research. 26:169–174. doi:10.1080/00288233.1983.10427055.
   Web of Science ®Google Scholar
• Morris ST, Kenyon PR. 2004. The effect of litter size and sward height on ewe and lamb performance. New Zealand Journal of Agricultural Research. 47:275–286.
   Web of Science ®Google Scholar
• Munro J. 1956. Observations on the suckling behaviour of young lambs. The British Journal of Animal Behaviour. 4:34–36. doi:10.1016/S0950-5601(56)80014-2.
   Google Scholar
• Nel CL, Cloete SWP, Kruger ACM, Dzama K. 2021. Long term genetic selection for reproductive success affects neonatal lamb vitality across cold stress conditions. Journal of Thermal Biology. 98:102908. doi:10.1016/j.jtherbio.2021.102908.
   PubMed Web of Science ®Google Scholar
• Nowak R, Poindron P. 2006. From birth to colostrum: early steps leading to lamb survival. Reproduction Nutrition Development. 46:431–446. doi:10.1051/rnd:2006023.
   PubMedGoogle Scholar
• Owens JL, Bindon BM, Edey TN, Piper LR. 1985. Behavior at parturition and lamb survival of Booroola Merino sheep. Livestock Production Science. 13:359–372. doi:10.1016/0301-6226(85)90027-2.
   Google Scholar
• Pickup HE, Dwyer CM. 2011. Breed differences in the expression of maternal care at parturition persist throughout the lactation period in sheep. Applied Animal Behaviour Science. 132:33–41. doi:10.1016/j.applanim.2011.03.010.
   Web of Science ®Google Scholar
• Scales GH, Burton RN, Moss RA. 1986. Lamb mortality, birth-weight, and nutrition in late pregnancy. New Zealand Journal of Agricultural Research. 29:75–82. doi:10.1080/00288233.1986.10417977.
   Web of Science ®Google Scholar
• Smith JF, Knight TW. 1998. Reproductive management of sheep. In: E.D. Fielden, J.F. Smith, editor. Reproductive management of grazing ruminants in New Zealand. Hamilton, New Zealand: New Zealand Society of Animal Production; p. 113–134.
   Google Scholar
• Stapleton D, Hinch G, Thwaites C, Edey T. 1980. Effect of sex and litter size on the sucking behaviour of the lamb. Proceedings of the Australian Society of Animal Production. 13:333–336.
   Google Scholar
• Statistics New Zealand. 2022. Infoshare. Retrieved 14/03/2022 2022, from https://www.stats.govt.nz/tools/stats-infoshare.
   Google Scholar
• Symonds ME, Lomax MA. 1992. Maternal and environmental influences on thermoregulation in the neonate. Proceedings of the Nutrition Society. 51:165–172. doi:10.1079/PNS19920026.
   PubMed Web of Science ®Google Scholar
• Thomson BC, Muir PD, Smith NB. 2004. Litter size, lamb survival, birth and twelve week weight in lambs born to cross-bred ewes. Proceedings of the New Zealand Grasslands Association. 66:23–237.
   Google Scholar
• Van Welie L, Clews S, Beausoleil N, Hickson R, Kongara K, Kenyon PR, Morris ST. 2016. The sucking behaviour and milk intake of one-to three-week-old triplet lambs during natural and competitive suckling situations. Applied Animal Behaviour Science. 180:58–64. doi:10.1016/j.applanim.2016.04.009.
   Web of Science ®Google Scholar