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Home / Equine Research Bank / Acta Vet Scand / Effects of inbreeding and other systematic effects on fertil...
Acta veterinaria Scandinavica2017; 59(1); 70; doi: 10.1186/s13028-017-0338-4

Effects of inbreeding and other systematic effects on fertility of Black Forest Draught horses in Germany.

Abstract: The Black Forest Draught horse (BFDH) is an endangered German coldblood breed with its origin in the area of the Black Forest in South Germany. In this retrospective study, the influence of the inbreeding coefficient on foaling rates was investigated using records from ten breeding seasons. Due to the small population size of BFDH, the level of inbreeding is increasing and may have an effect on foaling rates.The data of the present study included all coverings reported for 1024 BFDH mares in the years 2001-2009. These mares were covered by 32 BFDH stallions from the State Stud Marbach. Data from 4534 estrus cycles was used to calculate per cycle foaling rate (CFR). Pedigree data contained all studbook data up to the foundation of the breed as early as 1836. The level of inbreeding of the mare, stallion and expected foal along with other systematic effects on CFR were analysed using a generalized linear mixed model approach. Stallion was employed as a random effect. Systematic fixed effects were month of mating, mating type, age of the mare and stallion, reproductive status of the mare and stallion line of the mare. Inbreeding coefficients of the stallion, mare and expected foal were modelled as linear covariates. Results: The average CFR was 40.9%. The mean inbreeding coefficients of the mares, stallions and expected foals were 7.46, 7.70 and 9.66%. Mating type, age of the mare, reproductive status of the mare and stallion line of the mare had a significant effect. Conclusions: The results showed that the mating type, stallion line of the mare, sire, age and reproductive status of the mare exerted the largest influences on CFR in BFDH. Inbreeding coefficients of the stallion, mare and expected foal were not significantly related with CFR.
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Publication Date: 2017-10-18 PubMed ID: 29047357PubMed Central: PMC5648486DOI: 10.1186/s13028-017-0338-4Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article studies how inbreeding and certain other factors impact the foaling rates (number of horses born) of an endangered German horse breed, the Black Forest Draught horse (BFDH). Despite the growing level of inbreathing in this small population breed, the study found no significant impact of inbreeding on the foaling rates.

Research Overview

  • The research was a retrospective study which utilized data from ten breeding seasons and took into account factors like inbreeding level, age, reproductive status and lineage of the horses.
  • The study considered all coverings reported for 1024 BFDH mares from the years 2001 to 2009. These mares were covered by 32 BFDH stallions from the State Stud Marbach.
  • The researchers made use of data from 4534 estrus cycles to calculate the per cycle foaling rate (CFR).
  • The inbreeding coefficient of the mare, stallion, and expected foal was calculated and analysed using a generalized linear mixed model approach.

Results

  • The results showed that the average CFR was 40.9%. The mean inbreeding coefficients of the mares, stallions and expected foals were found to be 7.46, 7.70 and 9.66% respectively.
  • The study also analysed other systematic effects like the month of mating, type of mating, age of horses, reproductive status, and lineage of the mares. It was found that these factors had a significant effect on the CFR.

Conclusion

  • The study concluded that although the level of inbreeding is increasing among the BFDH breed, it did not significantly affect the CFR.
  • It was other factors such as the type of mating, lineage of the mare, age, and reproductive status of the mare that had the largest influence on the CFR.

Cite This Article

APA
Müller-Unterberg M, Wallmann S, Distl O. (2017). Effects of inbreeding and other systematic effects on fertility of Black Forest Draught horses in Germany. Acta Vet Scand, 59(1), 70. https://doi.org/10.1186/s13028-017-0338-4

Publication

Acta veterinaria Scandinavica
ISSN: 1751-0147
NlmUniqueID: 0370400
Country: England
Language: English
Volume: 59
Issue: 1
Pages: 70

Researcher Affiliations

Müller-Unterberg, Maarit
  • Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover (Foundation), Bünteweg 17p, 30559, Hannover, Germany.
Wallmann, Sandra
  • Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover (Foundation), Bünteweg 17p, 30559, Hannover, Germany.
Distl, Ottmar
  • Institute for Animal Breeding and Genetics, University of Veterinary Medicine Hannover (Foundation), Bünteweg 17p, 30559, Hannover, Germany. Ottmar.Distl@tiho-hannover.de.

MeSH Terms

  • Animals
  • Breeding
  • Female
  • Fertility / genetics
  • Germany
  • Horses / genetics
  • Inbreeding
  • Male
  • Pregnancy
  • Reproduction / genetics
  • Retrospective Studies

References

This article includes 35 references
  1. Weber M. Stand und Weiterentwicklung der Schwarzwälder Kaltblutzucht in Baden-Württemberg zur Jahrhundertwende 2000, 2001: entwicklung der Kaltblutzucht seit,1947bis heute.. Festschrift zum 2001;23:34–64.
  2. Aberle K, Wrede J, Distl O. Analyse der Populationsstruktur des Schwarzwälder Kaltblutpferdes.. Berl Münch Tierärztl Wochenschr 2003;116:333–339.
    pubmed: 12894690
  3. Domestic Animal Diversity Information System (DAD-IS, global system for domestic animal diversity), Food and Agriculture Organization of the United Nations (FAO), Rome. http://www.fao.org/dad-is. Accessed June 2017.
  4. Müller-Unterberg M, Wallmann S, Distl O. Schätzung der genetischen Diversität der Schwarzwälder Kaltblutpopulation anhand von Pedigreedaten.. Züchtungskunde 2013;85:289–304.
  5. Cothran EG, MacCluer JW, Weitkamp LR, Pfennig DW, Boyce AJ. Inbreeding and reproductive performance in Standardbred horses.. J Hered 1984;75:220–224.
    doi: 10.1093/oxfordjournals.jhered.a109916pubmed: 6736603google scholar: lookup
  6. Klemetsdal G, Johnson M. Effect of inbreeding on fertility in Norwegian trotter.. Livest Prod Sci 1989;21:263–272.
    doi: 10.1016/0301-6226(89)90055-9google scholar: lookup
  7. Langlois B, Blouin C. Statistical analysis of some factors affecting the number of horse births in France.. Reprod Nutr Dev 2004;44:583–595.
    doi: 10.1051/rnd:2004055pubmed: 15762302google scholar: lookup
  8. Mahon GAT, Cunningham EP. Inbreeding and the inheritance of fertility in the Thoroughbred mare.. Livest Prod Sci 1982;9:949–953.
    doi: 10.1016/0301-6226(82)90021-5google scholar: lookup
  9. Sairanen J, Nivola K, Katila T, Virtala AM, Ojala M. Effects of inbreeding and other genetic components on equine fertility.. Animal 2009;3:1662–1672.
    doi: 10.1017/S1751731109990553pubmed: 22443550google scholar: lookup
  10. van Eldik P, van der Waaij EH, Ducro B, Kooper AW, Stout TAE, Colenbrander B. Possible negative effects of inbreeding on semen quality in Shetland pony stallions.. Theriogenology 2006;65:1159–1170.
    doi: 10.1016/j.theriogenology.2005.08.001pubmed: 16165199google scholar: lookup
  11. Baker CB, Little TV, McDowell KJ. The live foaling rate per cycle in mares.. Equine Vet J 1993;25(Suppl. 15):28–30.
  12. Bosh S, Powell D, Shelton B, Zent W. Reproductive performance measures among Thoroughbred mares in central Kentucky, during the 2004 mating season.. Equine Vet J 2009;41:883–888.
    doi: 10.2746/042516409X456068pubmed: 20383986google scholar: lookup
  13. Brück I, Anderson GA, Hyland JH. Reproductive performance of Thoroughbred mares on six commercial stud farms.. Aust Vet J 1993;70:299–303.
    doi: 10.1111/j.1751-0813.1993.tb07979.xpubmed: 8216096google scholar: lookup
  14. Davies Morel MCG, Gunnarsson V. A survey of the fertility of Icelandic stallions.. Anim Reprod Sci 2000;64:49–64.
    doi: 10.1016/S0378-4320(00)00192-5pubmed: 11078966google scholar: lookup
  15. Dyrmundsson OR. Reproduction of Icelandic horses with special reference to seasonal sexual activity.. Icelandic Agric Sci 1994;8:51–57.
  16. Ewert M, Böröcz J, Uphaus H, Oldenhof H, Distl H, Sieme H. Einflussfaktoren auf die Trächtigkeitsrate in der deutschen Vollblutzucht.. Tierärztliche Praxis Großtiere 2013;41:147–152.
    pubmed: 23765316
  17. Hamann H, Mertens U, Sieme H, Klug E, Distl O. Einfluss des Besamungsmanagements auf Fruchtbarkeitsmerkmale in der Population des Hannoverschen Warmbluts.. Züchtungskunde 2005;77:194–205.
  18. Hemberg E, Lundeheim N, Einarsson S. Reproductive performance of Thoroughbred mares in Sweden.. Reprod Dom Anim 2004;39:81–85.
    doi: 10.1111/j.1439-0531.2004.00482.xpubmed: 15065988google scholar: lookup
  19. Hevia ML, Quiles AJ, Fuentes F, Gonzalo C. Reproductive performance of Thoroughbred horses in Spain.. J Equine Vet Sci 1994;14:89–92.
    doi: 10.1016/S0737-0806(06)81883-6google scholar: lookup
  20. Hugason KM, Arnason Th, Jonmundsson JV. A note on the fertility and some demographical parameters of Icelandic toelter horses.. Livest Prod Sci 1985;12:161–167.
    doi: 10.1016/0301-6226(85)90088-0google scholar: lookup
  21. Katila T, Nivola K, Reilas T, Sairanen J, Peltonen T, Virtala A-M. Factors affecting reproductive performance of horses.. Pferdeheilkunde 2010;26:6–9.
    doi: 10.21836/PEM20100101google scholar: lookup
  22. Katila T, Reilas T, Nivola K, Peltonen T, Virtala A-M. 15-year survey of reproductive efficiency of Standardbred and Finnhorse trotters in Finland—descriptive results.. Acta Vet Scand 2010;52:40.
    doi: 10.1186/1751-0147-52-40pmc: PMC2907380pubmed: 20546559google scholar: lookup
  23. McDowell K. Reproductive success in broodmares – Part 1.. Equine Disease Quarterly 2002;10:2.
  24. McDowell K, Powell DG, Baker CB. Effect of booksize and age of mare and stallion on foaling rates in Thoroughbred horses.. J Equine Vet Sci 1992;12:364–367.
    doi: 10.1016/S0737-0806(06)81363-8google scholar: lookup
  25. Merkt H, Jacobs K-O, Klug E, Aukes E. An analysis of stallion fertility rates (foals born alive) from the breeding documents of the Landgestüt Celle over a 158-year period.. J Reprod Fertil 1979;Suppl. 27:73–77.
    pubmed: 383990
  26. Merkt H, Klug E, Jochle W. Reproduction management in the German Thoroughbred breeding industry.. J. Equine Vet Sci 2000;20:822–868.
    doi: 10.1016/S0737-0806(00)80087-8google scholar: lookup
  27. Morris LHA, Allen WR. Reproductive efficiency of intensively managed Thoroughbred mares in Newmarket.. Equine Vet J 2002;34:51–60.
    doi: 10.2746/042516402776181222pubmed: 11822372google scholar: lookup
  28. Schulman ML, Marlow CHB, Nurton JP. A survey of reproductive success in South African Thoroughbred horse breeding from 1975 to 1999.. J S Afr Vet Ass 2003;74:17–19.
    pubmed: 12836741
  29. Gutierrez JP, Goyache F. A note on ENDOG: a computer program for analysing pedigree information.. J Anim Breed Genet 2005;122:172–176.
    doi: 10.1111/j.1439-0388.2005.00512.xpubmed: 16130468google scholar: lookup
  30. Katila T. Sperm-uterine interactions: a review.. Anim Reprod Sci 2001;68:267–272.
    doi: 10.1016/S0378-4320(01)00162-2pubmed: 11744270google scholar: lookup
  31. Troedsson MHT, Loset K, Alghamdi D, Dahms B, Crabo BG. Interaction between equine semen and the endometrium: the inflammatory response to semen.. Anim Reprod Sci 2001;68:273–278.
    doi: 10.1016/S0378-4320(01)00164-6pubmed: 11744271google scholar: lookup
  32. Töpfer-Petersen E, Waberski D, Hess O, Bellair S, Schamboy A, Ekhlasihundrieser M. Bedeutung des Seminalplasmas für die Befruchtung - ein kurzer Überblick.. Tierärtzl Umschau 1998;53:1–6.
  33. Bracher V, Gerstenberg C, Allen WR. Der Einfluss von Endometrose (degenerativer Endometriumserkrankungen) auf Fruchtbarkeit, Plazentation und fotale Entwicklung beim Pferd.. Pferdeheilkunde 1997;13:465–473.
    doi: 10.21836/PEM19970507google scholar: lookup
  34. Carnevale EM, Ginther OJ. Relationships of age to uterine function and reproductive efficiency in mares.. Theriogenology 1992;37:1101–1115.
    doi: 10.1016/0093-691X(92)90108-4pubmed: 16727108google scholar: lookup
  35. Wolc A, Torzynski G, Szwaczkowski T. Genetic effects on reproductive traits in Warmblood horses.. Can J Anim Sci 2009;89:215–218.
    doi: 10.4141/CJAS08067google scholar: lookup
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