Case of Pregnancy in Two Cows with Unicorn Horn of the Uterus either by Artificial Insemination at Ipsilateral or Embryo Transfer at Contralateral Corpus Luteum in the Ovary

Moriyama, C; Kobayashi, Ichiro; Tani, Mineto; Oishi, Takao; Kikuchi, Makoto; Horii, Yoichiro; Kamimura, Shunichi

doi:10.1111/j.1439-0531.2007.00933.x

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…According to Moriyama et al (2008), white heifer disease was diagnosed by ultrasonography in 3 animals, case 1 was a 14-month-old heifer with aplasia on both sides of the uterine horn, case 2 was a primiparous cow and case 3 was an 18-month-old heifer with segmental aplasia of the right uterine horn. Despite causing subfertility in the herd, the reproduction was possible in case 2 by artificial insemination in the right ovulatory follicle and corpus luteum in the left ovary, while in case 3 reproduction occurred by embryo transfer.…”

Section: Resultsmentioning

confidence: 99%

Uterine segmental aplasia in sheep

Silva

Macêdo

Pedroso

2021

AVB

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The complete absence of one of the uterine horns, named segmental uterine aplasia or unicorn uterus, occurs due to deficiency in the development of segments of the paramesonephric or Mullerian ducts. It is a congenital or hereditary anomaly of the female reproductive tract caused by recessive genes, which occurrence is unusual. In cows, this malformation was initially called “white heifer disease”, comprising an alteration in the Mullerian ducts in association with the white skin gene that causes aplasia of the uterus, cervix and vagina. Two pieces of sheep reproductive system from a slaughterhouse under federal inspection in the state of Bahia, Brazil, were received for pathological diagnosis. The collection, dissection and macroscopic analysis were carried out. In the macroscopic evaluation, uterine segmental aplasia was identified in both cases, with complete absence of the left uterine horns. Both had agenesis of the uterine tubes associated with the absence of internal bifurcation of the uterine horns. Animals that have a unicorn uterus often have reduced fertility which consequently leads to losses to sheep farming.

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Section: Resultsmentioning

confidence: 99%

Uterine segmental aplasia in sheep

Silva

Macêdo

Pedroso

2021

AVB

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“…The endometrial gland anomalies would be causing the impediment of gestation by alteration of uterine receptivity, blastocyst/ conceptus survival and implantation, and stromal cell decidualization (Filant and Spencer, 2014;Gray et al, 2001b). The uterine aplasia in some mammal species as cat (Brookshire et al, 2017), cow (Moriyama et al, 2008), and mare (Gallacher and Gilbert, 2018) does not prevent pregnancy. In camelids, missing left uterine horn could lead to infertility as long as nearly all pregnancies occur in the left side (Ali et al, 2015;Gherissi et al, 2017;Tibary and Anouassi, 1997).…”

Section: Discussionmentioning

confidence: 99%

Genital abnormalities associated to lack of uterine adenogenesis or endometrial gland dysgenesis of female dromedary camels (<i>Camelus dromedarius</i>)

et al. 2020

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Background: The developmental disruption of the müllerian duct and the endometrial dynamic can generate genital lesions that could contribute to infertility.Aim: This paper discusses two cases of genital conditions associated to endometrial gland pathologies in nulliparous female camels.Methods: Macroscopic examinations and histopathological description were performed on congenital and acquired genital abnormalities with endometrial gland anomalies.Results: The first case is endometrial gland agenesis associated to unilateral uterine aplasia, and the second case is endometrial gland dysgenesis associated to metritis. The prevalence of each case is estimated to be 0.6%. The most specific microscopic features associated to the endometrial gland agenesis were the presence of endometrial stromal proliferation and homogenous hyalinization of the myometrium. The acute metritis was associated to endometrial-activated stroma with focal infiltration with inflammatory cells on the endometrium and myometrium and the spontaneous endometrial gland dysgenesis.Conclusion: This study reveals the importance of congenital abnormalities during the routine reproductive examination of peripubertal animals, as well as the association of histopathological complementary examination for the research functional and inflammatory anomalies of the uterus. Genetic screening of breeders would be very important in the search for genetic risk factors associated with these congenital pathologies, which can be disseminated by reproductive biotechnologies. Keywords: Adenogenesis, Camel, Metritis, Uterine aplasia, Uterine glands.

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Case of Pregnancy in Two Cows with Unicorn Horn of the Uterus either by Artificial Insemination at Ipsilateral or Embryo Transfer at Contralateral Corpus Luteum in the Ovary

Cited by 2 publications

References 7 publications

Uterine segmental aplasia in sheep

Uterine segmental aplasia in sheep

Genital abnormalities associated to lack of uterine adenogenesis or endometrial gland dysgenesis of female dromedary camels (<i>Camelus dromedarius</i>)

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