Surgical Techniques for Preparation of Teaser Bulls

Gill, Marjorie S.

doi:10.1016/s0749-0720(15)30511-9

Cited by 9 publications

(7 citation statements)

References 6 publications

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“…On caprine farms, the use of teaser males is necessary to improve the reproductive technology. There are two basic objectives in the preparation of a teaser male: the animal must be rendered completely sterile, so that no fertilization can occur, and the libido should be maintained for a long time (Gill 1995).…”

Section: Introductionmentioning

confidence: 99%

“…Numerous surgical and non‐surgical techniques for preparing teaser males have been described in veterinary literature. Bilateral vasectomy is the main surgical technique performed for preparing teaser males in bulls, rams and bucks (Gill 1995; Boundy 1996). There are different reports regarding the short and long term effects of vasectomy on the structure of the testes and the testicular function in rams (Osman 1980; Ahmad and Noakes 1995; Janett et al.…”

Section: Introductionmentioning

confidence: 99%

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Semen Characteristics and Plasma Levels of Testosterone after Bilateral Vasectomy in Bucks

Batista

Prats

Calero

et al. 2002

Reprod Domestic Animals

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The effects of bilateral vasectomy on the seminal characteristics were assessed in six bucks of the Canarian breed. In addition, we tried to establish the effects of vasectomy on the plasmatic concentrations of testosterone and the libido of the bucks. Semen samples were collected once a week from 8 weeks before to 16 weeks after vasectomy; blood samples were collected prior to vasectomy, and then at once and 1 week after vasectomy and every 2 weeks from the week 4 to the end of the experiment. One week after the vasectomy, ejaculated spermatozoa were non-motile and the percentage of live spermatozoa was below 5% in all vasectomized males; in addition, the total number of cells/ejaculate was 3100 x 106 and 30 x 106 spermatozoa in the control and vasectomized males, respectively. Our results suggest that the vasectomized males may be used as oestrus detectors, without risks of accidental fecundating, only 1 week after vasectomy. Before vasectomy, no significant differences were observed in plasma levels of testosterone between the vasectomized and control males (5.4 +/- 1.2 and 3.9 +/- 1.4 ng/ml, respectively); from 4 to 12 weeks after vasectomy, a marked decrease in the testosterone concentration in all males (vasectomized and control bucks) was observed. From 12 weeks after vasectomy until the end of the experiment, four of the vasectomized males and the control males recovered their normal libido. The results suggest that vasectomy did not exert a remarkable effect on the steroidogenic functionality of the testicle.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Semen Characteristics and Plasma Levels of Testosterone after Bilateral Vasectomy in Bucks

Batista

Prats

Calero

et al. 2002

Reprod Domestic Animals

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“…3 Feed should be withheld for 48 hours, and water removed 12 hours prior to the procedure. 4 Pre-operative antimicrobials are highly encouraged if the procedure is not performed in a sterile environment but may also be useful with more invasive procedures. The author prefers to utilize beta-lactam antibiotics because of the spectrum of activity and common pathogens discovered in the urogenital tract of the bull.…”

Section: Pre-anesthetic Preparationmentioning

confidence: 99%

Review of surgical procedures for creating bovine estrus detector males

Armstrong

2023

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“…Teaser rams are used for the purpose of identifying ewes in estrus or reducing the length of the anestrus period and controlling return to estrus activity (ram effect) 1,2 . There are 2 basic objectives in preparation of a teaser male: the animal must be rendered completely sterile, so that no fertilization can occur, and libido should be maintained for a long time 3 . Numerous surgical and nonsurgical techniques for preparing teaser males have been described including vasectomy, epididymectomy, translocation of the penis, ventral deviation of the penis, and pexy of the prepuce to the abdominal tunic 1,3–5 .…”

Section: Introductionmentioning

confidence: 99%

“…There are 2 basic objectives in preparation of a teaser male: the animal must be rendered completely sterile, so that no fertilization can occur, and libido should be maintained for a long time 3 . Numerous surgical and nonsurgical techniques for preparing teaser males have been described including vasectomy, epididymectomy, translocation of the penis, ventral deviation of the penis, and pexy of the prepuce to the abdominal tunic 1,3–5 . These techniques mostly require aggressive surgical intervention, which may result in postoperative complications and follow‐up care, which increase expense and delay use of the treated ram.…”

Section: Introductionmentioning

confidence: 99%