A complex intersex condition in a Holstein calf.

A complex intersex condition in a Holstein calf. Research Abstract Details 

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A complex intersex condition in a Holstein calf. Abstract Text:

R Payan-Carreira,M A Pires,M Quaresma,R Chaves,F Adega,H Guedes Pinto,B ,V Villar,R Payan-Carreira,M A Pires,M Quaresma,R Chaves,F Adega,H Guedes Pinto,B ,V Villar,

A case of disrupted embryonic development of the genital tract in a newborn Holstein calf is described. The physical examination of the calf evidenced several abnormalities, like atresia ani, rudimentary external genitalia and caudal vertebral agenesis. On necropsy, the excised genitalia consisted of bilateral streak gonads, apparently normal uterine tubes, a fluid-filled uterus, a long vagina and a very narrow clitoris-like structure covered with a discrete skin-fold. The urinary tract seemed normal and the urethra's opening was at the vestibule-vaginal junction. A cytogenetic analysis was requested. Karyotype revealed the existence of Y chromosome material in the two X chromosomes. However, the search for the sex-determining region Y (SRY) showed that this was an apparently absent gene. The histological examination of the gonads revealed the existence of ovarian dysplasia. Uterine sections evidenced the absence of the uterine epithelium, with only sporadic caruncles. Under microscopic examination, the uterine tubes and vagina structure was normal. The external genitalia sections revealed the existence of a skin-fold covering an erectile structure surrounding the urethra, a structure more similar to a penis than to a clitoris. This is an unusual situation of gonadal dysplasia combined with genital tract anomalies in cattle, probably associated to a genetic defect.

A complex intersex condition in a Holstein calf. Publishing Authors By Initials

R Payan-Carreira,MA Pires,M Quaresma,R Chaves,F Adega,H Guedes Pinto,B ,V Villar,R Payan-Carreira,MA Pires,M Quaresma,R Chaves,F Adega,H Guedes Pinto,B ,V Villar,

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A complex intersex condition in a Holstein calf. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Animal reproduction science

VOLUME: 103

Page Numbers: 154-63

Journal Abbreviation: Anim. Reprod. Sci.

ISSN: 0378-4320

DAY: 22

MONTH: 04

YEAR: 2007

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LANGUAGE: eng

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AFFILIATION: CECAV, UTAD, Vila Real, Portugal.

Country: Netherlands

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MEDLINETA: Anim Reprod Sci

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