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Special issue: The New Zealand Society of Animal Production (NZSAP) Annual Conference

Ewe culling in New Zealand: an interview study of 38 farmers

ORCID Icon, , , , &
Pages 361-371 | Received 05 Sep 2023, Accepted 03 Nov 2023, Published online: 19 Nov 2023

References

  • Amer PR, Sise JA, Jopson NB, Bray AR. 2009. Background effects on ewe lambing and weaning performance in well recorded breeding flocks. Proceedings of the New Zealand Society of Animal Production. 69:115–117.
  • Annett RW, Carson AF, Dawson LER, Irwin D, Gordon AW, Kilpatrick DJ. 2011a. Comparison of the longevity and lifetime performance of Scottish Blackface ewes and their crosses within hill sheep flocks. Animal. 5:347–355. doi:10.1017/S1751731110002107.
  • Annett RW, Carson AF, Dawson LER, Irwin D, Kilpatrick DJ. 2011b. Effects of breed and age on the performance of crossbred hill ewes sourced from Scottish Blackface dams. Animal. 5:356–366. doi:10.1017/S1751731110002090.
  • Anon. 2023. Regional council maps and websites; [accessed 23 July 2023]. https://www.lgnz.co.nz/local-government-in-nz/new-zealands-councils.
  • Corner-Thomas RA, Kenyon PR, Morris ST, Ridler AL, Hickson RE, Greer AW, Logan CM, Blair HT. 2016. The use of farm-management tools by New Zealand sheep farmers: changes with time. Proceedings of the New Zealand Society of Animal Production. 76:78–80.
  • Farrell LJ, Kenyon PR, Tozer PR, Ramilan T, Cranston LM. 2020. Quantifying sheep enterprise profitability with varying flock replacement rates, lambing rates, and breeding strategies in New Zealand. Agricultural Systems. 184:102888. doi:10.1016/j.agsy.2020.102888.
  • Farrell LJ, Tozer PR, Kenyon PR, Ramilan T, Cranston LM. 2019. The effect of ewe wastage in New Zealand sheep and beef farms on flock productivity and farm profitability. Agricultural Systems. 174:125–132. doi:10.1016/j.agsy.2019.04.013.
  • Flay KJ, Ridler AL, Compton CWR, Kenyon PR. 2021. Ewe wastage in New Zealand commercial flocks: Extent, timing, association with hogget reproductive outcomes and BCS. Animals. 11:779. doi:10.3390/ani11030779.
  • Flay KJ, Ridler AL, Corner-Thomas RA, Kenyon PR. 2022. Ewe wastage in commercial sheep flocks: a review of current knowledge. New Zealand Veterinary Journal. 70:187–197. doi:10.1080/00480169.2022.2032446.
  • Flay KJ, Ridler AL, Kenyon PR. 2020. The effect of ewe udder palpation on lamb production in commercial ewes. Livestock Science. 242:104316.
  • Griffiths KJ, Ridler AL, Compton CWR, Corner-Thomas RA, Kenyon PR. 2019a. Investigating associations between lamb survival to weaning and dam udder and teat scores. New Zealand Veterinary Journal. 67:163–171. doi:10.1080/00480169.2019.1596523.
  • Griffiths KJ, Ridler AL, Compton CWR, Corner-Thomas RA, Kenyon PR. 2019b. Associations between lamb growth to weaning and dam udder and teat scores. New Zealand Veterinary Journal. 67:172–179. doi:10.1080/00480169.2019.1596524.
  • Griffiths KJ, Ridler AL, Heuer C, Corner-Thomas RA, Kenyon PR. 2018. Associations between liveweight, body condition score and previous reproductive outcomes, and the risk of ewes bred at 18-months of age being dry at docking. New Zealand Veterinary Journal. 66:290–296. doi:10.1080/00480169.2018.1498035.
  • Jackson R, Hilson RPN, Roe AR, Perkins N, Heuer C, West DM. 2014. Epidemiology of vaginal prolapse in mixed-age ewes in New Zealand. New Zealand Veterinary Journal. 62:328–337. doi:10.1080/00480169.2014.925788.
  • Kallio H, Pietila A-M, Johnson M, Kangasniemi M. 2016. Systematic methodological review: developing a framework for a qualitative semi-structured interview guide. Journal of Advanced Nursing. 72:2954–2296. doi:10.1111/jan.13031.
  • Keady T, McNamara N. 2014. Effects of rearing replacements on the lifetime performance of ewes differing in prolificacy. Proceedings of the National Sheep Conference Animal and Grassland Research and Innovation Programme: Teagasc. 18–26.
  • Kenyon PR, Maloney SK, Blache D. 2014. Review of sheep body condition score in relation to production characteristics. New Zealand Journal of Agricultural Research. 57:38–64. doi:10.1080/00288233.2013.857698.
  • Kleeman DO, Walker SK, Ponzoni RW, Gifford DR, Walkley JRW, Smith DH, Grimson RJ, Jaensch KS, Walkom SF, Brien FD. 2016. Effect of previous reproductive performance on current reproductive rate in South Australian Merino ewes. Animal Production Science. 56:716–725. doi:10.1071/AN15114.
  • McGregor BA. 2011. Incisor development, wear and loss in sheep and their impact on ewe production, longevity and economics: a review. Small Ruminant Research. 95:79–87. doi:10.1016/j.smallrumres.2010.11.012.
  • McLaren A, McHugh N, Lambe NR, Pabiou T, Wall E, Boman IA. 2020. Factors affecting ewe longevity on sheep farms in three European countries. Small Ruminant Research. 189:106145. doi:10.1016/j.smallrumres.2020.106145.
  • Raadsma HW, Dhungyel OP. 2013. A review of footrot in sheep: new approaches for control of virulent footrot. Livestock Science. 156:115–125. doi:10.1016/j.livsci.2013.06.011.
  • Ridler AL, Rout-Brown G, Flay KJ, Velathanthiri N, Grinberg A. 2022. Defects and bacterial pathogens in udders of non-dairy breed ewes from New Zealand. New Zealand Journal of Agricultural Research. 65(2-3):163–171. doi:10.1080/00288233.2021.1905005.
  • Robertson SM, Friend MA. 2023. Longitudinal assessment of the impact of aging on wastage, productivity and welfare of ewes. Australian Veterinary Journal. 101:248–253. doi:10.1111/avj.13240.
  • West DM, Bruere AN, Ridler AL. 2017. The sheep: health, disease and production. Auckland, New Zealand: Massey University Press; p. 238.