The diagnosis of short penis as a cause of impotentia coeundi in bulls.

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The diagnosis of short penis as a cause of impotentia coeundi in bulls. Abstract Text:

R O Gilbert,

Short penis condition was diagnosed as the cause of impotentia coeundi in 10 bulls, aged 2.5 to 5 yr. The diagnosis was based on observation of service attempts, measurement of the extended penis, and elimination of other causes of impotence. Measurements of the penis were made under general inhalation anesthesia or pudendal nerve block. These measurements were then compared with those of 10 control bulls, matched for age and breed and having no history of impotence; the latter measurements were likewise obtained under general anesthesia, pudendal nerve block or sedation. with propionyl promazine. Similar measurements were obtained from 10 yearling bulls under propionyl promazine sedation. Measurements obtained under general anesthesia or pudendal nerve block in the same bull were usually similar and repeatable, while phenothiazine tranquillization produced incomplete and variable relaxation of the retractor penis muscles. The dimension best correlated with impotence due to short penis was the distance from the tip of the extended penis to the preputial orifice in its resting position. In 10 bulls in which short penis was diagnosed, this distance was 10 to 22 cm, while in 10 control bulls with no history of impotence it was 25 to 42 cm. The distances from the tip of the extended penis to the preputial reflection (fornix) and to the neck of the scrotum were also shorter in affected than in control bulls. Although observation of service ability remains the cornerstone of diagnosis of short penis, a presumptive diagnosis can be made if penile protrusion of less than 25 cm can be obtained in an adult bull under general anesthesia or pudendal nerve block. Phenothiazine tranquillization is suitable for screening examinations but not for definitive diagnosis.

The diagnosis of short penis as a cause of impotentia coeundi in bulls. Publishing Authors By Initials

RO Gilbert,

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The diagnosis of short penis as a cause of impotentia coeundi in bulls. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Theriogenology

VOLUME: 32

Page Numbers: 805-15

Journal Abbreviation: Theriogenology

ISSN: 0093-691X

DAY: 26

MONTH: Nov

YEAR: 1989

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LANGUAGE: eng

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AFFILIATION: Department of Theriogenology, Faculty of Veterinary Science University of Pretoria, Private Bag X04 Onderstepoort, 0110 South Africa.

Country: United States

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MEDLINETA: Theriogenology

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