Canine perinatal mortality: A cohort study of 224 breeds

Tønnessen, Ragnhild; Borge, Kaja Sverdrup; Nødtvedt, Ane; Indrebø, Astrid

doi:10.1016/j.theriogenology.2011.12.023

Cited by 111 publications

(142 citation statements)

References 11 publications

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“…In a two-year retrospective study by Tonnessen et al (2012), no seasonal influence on perinatal mortality was found, which is in line with our results. Conversely, a seven-year Australian study reports on the seasonal influence (Gill 2001).…”

Section: Resultssupporting

confidence: 92%

“…It is known that mortality of puppies is breedspecific (Tonnessen et al 2012), highly variable (Sturgess 1998;Lawler 2008), and can be quite high (16%) in large breeds (Indrebo et al 2007). In a two-year retrospective study by Tonnessen et al (2012), no seasonal influence on perinatal mortality was found, which is in line with our results.…”

Section: Resultsmentioning

confidence: 99%

“…The number of puppies surviving until weaning is greatly influenced by puppy losses (Indrebo et al 2007), which are relatively high and breed-specific, and information on this phenomenon is still lacking for the majority of dog breeds (Tonnessen et al 2012). Indrebo et al (2007) studied prevalence rates and risk factors concerning stillbirth and mortality during the first three weeks of life in four large breeds.…”

Section: Introductionmentioning

confidence: 99%

“…Gill (2001) described the incidence of neonatal mortality (the first six weeks after birth) for toy breeds. These studies used records from Norwegian Kennel Club (Tonnessen et al 2012) and from a survey among breeders (Gill 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Information on the incidence of puppy losses in postpartum period in particular breeds would be highly valuable for breeders and especially veterinarians (Tonnessen et al 2012) and might contribute to reducing the rate of stillbirths and deaths of puppies (Indrebo et al 2007). …”

Section: Introductionmentioning

confidence: 99%

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

Šichtař¹,

Dokoupilová²,

Vostrý³

et al. 2016

CZECH J ANIM SCI

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ABSTRACT: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.

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Section: Resultssupporting

confidence: 92%