Czech J. Anim. Sci., 2016, 61(12):578-585 | DOI: 10.17221/89/2015-CJAS

Factors affecting reproductive efficiency in German Shepherd bitches producing litters for Police of the Czech RepublicOriginal Paper

J. Šichtař1, A. Dokoupilová2, L. Vostrý3, R. Rajmon1, F. Jílek1
1 Department of Veterinary Sciences, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
2 Department of Animal Science and Ethology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
3 Department of Genetics and Breeding, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic

The present study on German Shepherd bitches bred in the same environment of a private kennel and producing offspring for working purposes aimed to ascertain if any of the parameters: litter size, number of live puppies, stillbirth and mortality of puppies is determined by the month of whelping, parity, number of whelpings for one bitch over the course of one year, pregnancy length or bitch age at the time of whelping. Reproductive records of 73 bitches of German Shepherd breed (GSB) documented since 2001 till 2013 were processed. A total of 298 whelpings resulted in 2075 puppies; mortality of puppies was evaluated within the first 3 weeks of life. A significant seasonal influence on litter size and number of live born puppies, but not on stillbirth or mortality, was found. The parity of GSB significantly influenced litter size, live born puppies, and the incidence of stillbirths. The number of whelpings in one bitch over the course of one year significantly influenced litter size, while puppy losses were the same when bitches were bred once or twice a year. Litter size and number of live born puppies had a significant negative effect on pregnancy length. Furthermore, the number of stillbirths significantly increased when pregnancy was prolonged. Bitch age did not influence litter size, number of live born puppies and stillbirths, however it significantly affected mortality.

Keywords: dog; reproduction; whelping; litter size; puppy losses

Published: December 31, 2016  Show citation

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Šichtař J, Dokoupilová A, Vostrý L, Rajmon R, Jílek F. Factors affecting reproductive efficiency in German Shepherd bitches producing litters for Police of the Czech Republic. Czech J. Anim. Sci. 2016;61(12):578-585. doi: 10.17221/89/2015-CJAS.
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    References

    1. Borge K.S., Tonnessen R., Nodtvedt A., Indrebo A. (2011): Litter size at birth in purebred dogs - a retrospective study of 224 breeds. Theriogenology, 75, 911-919. Go to original source... Go to PubMed...
    2. Bouchard G., Youngquist R.S., Vaillancourt D., Krause G.F., Guay P., Paradis M. (1991): Seasonality and variability of the interestrous interval in the bitch. Theriogenology, 36, 41-50. Go to original source... Go to PubMed...
    3. Chatdarong K., Tummaruk P., Sirivaidyapong S., Raksil S. (2007): Seasonal and breed effects on reproductive parameters in bitches in the tropics: a retrospective study. Journal of Small Animal Practice, 48, 444-448. Go to original source... Go to PubMed...
    4. Dohoo I. (2009): Mixed models for continuous data. In: Dohoo I., Martin W., Stryhn H.: Veterinary Epidemiologic Research. VER Inc., Charlottetown, Canada, 553-578.
    5. Eilts B.E., Davidson A.P., Hosgood G., Paccamonti D.L., Baker D.G. (2005): Factors affecting gestation duration in the bitch. Theriogenology, 64, 242-251. Go to original source... Go to PubMed...
    6. Elmaz O., Aksoy O.A., Taskin T. (2008): Effects of seasonal and breed on tie at mating, mating number and estrus in bitches. Journal of Animal and Veterinary Advances, 7, 1016-1020.
    7. Forsberg C.L., Persson G. (2007): A survey of dystocia in the Boxer breed. Acta Veterinaria Scandinavica, 49, 9. Go to original source... Go to PubMed...
    8. Gavrilovic B.B., Andersson K., Forsberg C.L. (2008): Reproductive patterns in the domestic dog - a retrospective study of the Drever breed. Theriogenology, 70, 783-794. Go to original source... Go to PubMed...
    9. Gill M.A. (2001): Perinatal and late neonatal mortality in the dog. Ph.D. Diss. Sydney: The University of Sydney. 190 p. Available from: http://ses.library.usyd.edu.au/bitstream/2123/4137/1/m_gill_thesis_2001.pdf.
    10. Hare E., Leighton E.A. (2006): Estimation of heritability of litter size in labrador retrievers and German Shepherd dogs. Journal of Veterinary Behavior - Clinical Applications and Research, 1, 62-66. Go to original source...
    11. Indrebo A., Trangerud C., Moe L. (2007): Canine neonatal mortality in four large breeds. Acta Veterinaria Scandinavica, 49 (Suppl. 1): 52. Go to original source...
    12. Irons P.C., Nothling J.O., Volkmann D.H. (1997): Failure of luteolysis leads to prolonged gestation in a bitch: a case report. Theriogenology, 48, 353-359. Go to original source... Go to PubMed...
    13. Lawler D.F. (2008): Neonatal and pediatric care of the puppy and kitten. Theriogenology, 70, 384-392. Go to original source... Go to PubMed...
    14. Lindeforsberg C., Wallen A. (1992): Effects of whelping and season of the year on the interestrous intervals in dogs. Journal of Small Animal Practice, 33, 67-70. Go to original source...
    15. Mandigers P.J.J., Ubbink G.J., Vandenbroek J., Bouw J. (1994): Relationship between litter size and other reproductive traits in the Dutch Kooiker dog. Veterinary Quarterly, 16, 229-232. Go to original source... Go to PubMed...
    16. Mir F., Billault C., Fontaine E., Sendra J., Fontbonne A. (2011): Estimated pregnancy length from ovulation to parturition in the bitch and its influencing factors: a retrospective study in 162 pregnancies. Reproduction in Domestic Animals, 46, 994-998. Go to original source... Go to PubMed...
    17. Mutembei H.M., Mutiga E.R., Tsuma V.T. (2002): An epidemiological survey demonstrating decline in reproductive efficiency with age and non-seasonality of reproductive parameters in German shepherd bitches in Kenya. Journal of the South African Veterinary Association, 73, 36-37. Go to original source... Go to PubMed...
    18. Okkens A.C., Kooistra H.S. (2006): Anoestrus in the dog: a fascinating story. Reproduction in Domestic Animals, 41, 291-296. Go to original source... Go to PubMed...
    19. Okkens A.C., Teunissen J.M., Van Osch W., Van Den Brom W.E., Dieleman S.J., Kooistra H.S. (2001): Influence of litter size and breed on the duration of gestation in dogs. Advances in Reproduction in Dogs, Cats and Exotic Carnivores, 193-197.
    20. Ortega-Pacheeo A., Segura-Correa J.C., Jimenez-Coello M., Forsberg C.L. (2007): Reproductive patterns and reproductive pathologies of stray bitches in the tropics. Theriogenology, 67, 382-390. Go to original source... Go to PubMed...
    21. Ozcan S.S., Akin H., Bayram H., Bas M., Yildiz A., Ozdemiroglu A. (2009): Utilization of police dogs: a Turkish perspective. Policing: An International Journal of Police Strategies and Management, 32, 226-237. Go to original source...
    22. Parr J.R., Otto C.M. (2013): Emergency visits and occupational hazards in German Shepherd police dogs (2008- 2010). Journal of Veterinary Emergency and Critical Care, 23, 591-597. Go to original source... Go to PubMed...
    23. Polat B., Colak A., Cengiz M., Cannazik O., Hayirli A. (2015): Breed, parity, and cycle season effects on life-time reproduction in bitches: a retrospective study. Turkish Journal of Veterinary and Animal Sciences, 39, 543-549. Go to original source...
    24. Shimatsu Y., Yuzawa H., Aruga K., Nakura M. (2007): Effect of time for mating and gestation length on reproductive efficiency in dogs. Reproduction in Domestic Animals, 42, 664-665. Go to original source... Go to PubMed...
    25. Sturgess K. (1998): Infectious diseases of young puppies and kittens. In: Simpson G., England M., Harwey M.: Manual of Small Animal Reproduction and Neonatology. British Small Animal Veterinary Association, Gloucester, UK, 159-166.
    26. Tonnessen R., Borge K.S., Nodtvedt A., Indrebo A. (2012): Canine perinatal mortality: a cohort study of 224 breeds. Theriogenology, 77, 1788-1801. Go to original source... Go to PubMed...
    27. Urfer S.R. (2009): Inbreeding and fertility in Irish Wolfhounds in Sweden: 1976 to 2007. Acta Veterinaria Scandinavica, 51: 12. Go to original source... Go to PubMed...
    28. von Heimendahl A., England G.W.C. (2010): Determining breeding status. In: England G.C.W., von Heimendahl A.: BSAVA Manual of Canine and Feline Reproduction and Neonatalogy. BSAVA, London, UK, 44-50. Go to original source...
    29. Wydooghe E., Berghmans E., Rijsselaere T., Van Soom A. (2013): International breeder inquiry into the reproduction of the English bulldog. Vlaams Diergeneeskundig Tijdschrift, 82, 38-43. Go to original source...

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