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. 2000 Jun 1;41(2):105–121. doi: 10.1186/BF03549643

Longevity of Breeding Sows in Relation to Leg Weakness Symptoms at Six Months of Age

Holdbarhed hos søer i relation til bensvaghedssymptomer ved seks måneders alderen.

B Jørgensen 1,✉
PMCID: PMC7996424  PMID: 10965562

Abstract

Jørgensen B: Longevity of breeding sows in relation to leg weakness symptoms at six months of age. Acta vet. scand. 2000, 41, 105–121. – The objective of this study was to evaluate the influence of leg weakness symptoms measured early in life (at 6 months of age) on the longevity of the sows, i.e. the age at culling due to locomotory problems in a Danish pig herd. One hundred and eighty-seven gilts at 6 months of age were selected according to different leg weakness symptoms and were followed until culling and judged for leg weakness once in every gestation using a scale from 1 (normal) to 4 (severe changes). Age at culling, and the main and secondary reasons for culling were recorded. The influence of leg weakness symptoms on longevity was evaluated by survival analysis. Though only 12% of the gilts showed a stiff locomotion half of the sows had suffered from this and nearly one third had been distinctly lame at some time in their life. Buck-kneed forelegs, upright pasterns, legs turned out, standing under position and swaying hindquarters were associated with stiff locomotion or lameness, whereas weak pasterns on hind legs and splayed digits on forelegs were associated with brisk movement (freedom from locomotor problems). The following leg weakness symptoms at the gilt stage were found to have significant negative effects on longevity: buck-kneed forelegs, swaying hindquarters, and standing under position on hind legs.

key word: pigs, gilts, locomotion, selection programme, survival analysis, culling reasons, Weibull regression model

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References

  1. Andersen S, Hansen UG: Selection for conformation and longevity in the Danish breeding system. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 72–76.
  2. Bereskin B. Genetic aspects of feet and legs soundness in swine. J.Anim.Sci. 1979;48:1322–1328. [Google Scholar]
  3. Cederberg ER, Jonsson L: Sow culling in Sweden. Proceedings of NJF-seminar no.265 “Longevity of Sows”. Research Centre Foulum, Denmark, 27.-28. March 1996, 7–8.
  4. Christensen G, Vraa-Andersen L, Mousing J. Causes of mortality among sows in Danish pig herds. Vet.Rec. 1995;137:396–399. doi: 10.1136/vr.137.16.395. [DOI] [PubMed] [Google Scholar]
  5. D’Allaire S, Stein TE, Leman AD. Culling patterns in selected Minnesota swine breeding herds. Can.J.Vet.Res. 1987;51:506–512. [PMC free article] [PubMed] [Google Scholar]
  6. Dagorn J, Aumaitre A. Sow culling: reasons for and effect on productivity. Livest.Prod.Sci. 1979;6:167–177. [Google Scholar]
  7. Dagorn J, Vaudelet MR. Elevage et ses résultats: les résultats de Gestion Technique des Troupeaux de Truies, année 1992. Techni-Porc. 1993;13:9–14. [Google Scholar]
  8. Ducrocq V: An analysis of length of productive life in dairy cattle. PhD thesis, 1987, Cornell Univ. Ithaca, NY.
  9. Ducrocq V, Quaas RL, Pollak EL, Casella G. Length of productive life of dairy cows. 2. Variance component estimation and sire evaluation. J. Dairy Sci. 1988;71:3071–3079. [Google Scholar]
  10. Grindflek E, Sehested E: Conformation and longevity in Norwegian pigs. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 77–84.
  11. Grøndalen T. Leg weakness in pigs. I. Incidence and relationship to skeletal lesions, feeding level, protein and mineral supply, exercise and exterior conformation. Acta vet.scand. 1974;15:555–573. doi: 10.1186/BF03547226. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Hansen UG, Gudmandsen AB, Arnbjerg J, Bittegeko SBPR: Ledforandringers udvikling (Astrupforsøget). (The trend of development of osteochondrosis (The Astrup-investigation). Meddelelse A2/96. Landsudvalget for svin., Copenhagen, 1996.
  13. Jones JET. An investigation of the causes of mortality and morbidity in sows in a commercial herd. Br.vet.J. 1967;123:327–339. doi: 10.1016/s0007-1935(17)39852-4. [DOI] [PubMed] [Google Scholar]
  14. Jørgensen B. Osteochondrosis / osteoarthrosis and claw disorders in sows, associated with leg weakness. Acta vet.scand. 2000;41:123–138. doi: 10.1186/BF03549644. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Jørgensen B, Sørensen MT. Different rearing intensities of gilts. II. Effects on subsequent leg weakness and longevity. Livest.Prod.Sci. 1998;54:167–171. [Google Scholar]
  16. Jørgensen B, Vestergaard T. Genetics of leg weakness in boars at the Danish pig breeding stations. Acta Agric.Scand. 1990;40:59–69. [Google Scholar]
  17. Kangasniemi R: Reasons of culling of sows in the Finish sow recording scheme. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 17–27.
  18. Karlberg K. Utrangeringsårsaker hos avlspurker. (Culling reasons in breeding animals). Norsk Veterinærtidsskrift. 1979;91:423–426. [Google Scholar]
  19. Liddell FDK. The development of cohort studies in epidemiology: A review. J.Clin.Epidemiol. 1988;41:1217–1237. doi: 10.1016/0895-4356(88)90027-3. [DOI] [PubMed] [Google Scholar]
  20. Lodde vKH, Dzapo V, Wassmuth R. Untersuchungen über Exterieurbeanstandungen bei der Körung von Jungebern. II. Beziehungen zwischen Exterieurbeanstandungen und Leistungsmerkmalen sowie genetische Disposition der Exterieurbeanstandungen. Züchtungskunde. 1985;57:47–57. [Google Scholar]
  21. Lundeheim N. Genetic analysis of osteochondrosis and leg weakness in the Swedish pig progeny testing scheme. Acta Agric.Scand. 1987;37:159–173. [Google Scholar]
  22. Lundeheim N: Conformation scoring in the Swedish pig progeny testing scheme. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 70–71.
  23. Nielsen NC. Arthrosis in pigs. Nord.Vet.-Med. 1973;25:17–27. [PubMed] [Google Scholar]
  24. Paterson R, Cargill C, Pointon A: Investigating into deaths and excessive culling of sows in Australian pig herds. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 34–45.
  25. Pedersen PN: Longevity and culling rates in Danish sow production and consequences of different strategies for culling. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 28–33.
  26. Penny RHC: Locomotor dysfunction causing reproductive failure. In: DA Morrow. (Ed.): Current therapy in theriogenology. W.B. Saunders, Philad. Pa., 1980, 1041–1045.
  27. Rothschild MF, Christian LL, Jung Y-C. Genetic control of front-leg weakness in Duroc swine. II Correlated responses in growth rate, backfat and reproduction from five generations of divergent selection. Livest.Prod.Sci. 1988;19:473–485. [Google Scholar]
  28. SAS Institute Inc.: SAS/STAT™ User’s Guide, Version 6, 4th edn. SAS Institute Inc., Cary, N.C. 1989.
  29. Sehested E, Schjerve A: Aspects of sow longevity based on analysis of Norwegian sow recording data. Proceeding of NJF-seminar no. 265: Longevity of Sows. Research Centre Foulum, Denmark. 27.-28. March 1996, 9–16.
  30. Stein TE, Dijkhuizen A D, Allaire S, Morris RS. Sow culling and mortality in commercial swine breeding herds. Prev.Vet.Med. 1990;9:85–94. [Google Scholar]
  31. Svendsen J, Nielsen NC, Bille N, Riising H-S. Causes of culling and death in sows. Nord.Vet.-Med. 1975;27:604–615. [PubMed] [Google Scholar]
  32. Van Steenbergen EJ: Relevance of exterior appraisal in pig breeding. PhD thesis, 1990, Wageningen Agricultural University, The Netherlands.
  33. Webb AJ, Russel WS, Sales DI. Genetics of leg weakness in performance-tested boars. Anim. Prod. 1983;36:117–130. [Google Scholar]

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