Twins in the bitch

Joone, Carolynne J. (2017) Twins in the bitch. In: [Presented at the Australian and New Zealand College of Veterinary Scientists Science Week 2018. From: Australian and New Zealand College of Veterinary Scientists Science Week 2018, 6-8 July 2017, Surfers Paradise, QLD, Australia.

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Despite occasional, anecdotal reports of two pups delivered within, or followed by, a single placental sac, few cases of sharing of placental sites have been formally documented in the dog. A case report from 1946 describes the finding of two canine embryos within one placental site. Although the embryos had separate amniotic and allantoic sacs, their sharing of a single chorion and yolk sac led the author to speculate that they may have been of monozygotic origin 1. More recently, Urhausen C, K Wolf 2 detected two foetuses within one placental site during ultrasonographic examination of a German Shepherd bitch. On a follow-up examination, the foetuses were found to be non-viable and were removed by caesarean section. The foetuses were of discordant gender, excluding the possibility of their monozygotic origin. This report describes two recently published case reports of dog foetal pairs within single placental sites, one involving suspected freemartinism of a female foetus paired with a male (Case One; Joonè CJ, KGM De Cramer 3) and the second involving two male foetuses of monozygotic origin (Case Two; Joonè C, K De Cramer 4).

Item ID: 53826
Item Type: Conference Item (Presentation)
Keywords: dog, embryo, shared placenta, monozygotic twins, freemartin
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Date Deposited: 24 Jul 2018 03:46
FoR Codes: 07 AGRICULTURAL AND VETERINARY SCIENCES > 0702 Animal Production > 070206 Animal Reproduction @ 100%
SEO Codes: 83 ANIMAL PRODUCTION AND ANIMAL PRIMARY PRODUCTS > 8399 Other Animal Production and Animal Primary Products > 839999 Animal Production and Animal Primary Products not elsewhere classified @ 100%
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