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Open/close-ended vasectomy technique by single incision on vervet monkeys (Chlorocebus pygerythrus)

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Vervet monkeys (Chlorocebus pygerythrus), considered a species of "least concern” by the International Union for Conservation of Nature (IUCN), are widely maintained at primate sanctuaries in South Africa. Permanent surgical contraception is a necessary method for the management of this species in captivity. In this study, a new vasectomy technique was evaluated and involves a prescrotal approach with only one surgical incision, aiming to excise a piece of vas deferens, leaving open the testicular side, and creating a loop on the prostatic side to avoid future recanalization. The birth rate was studied to assess the success of the technique. This technique significantly reduced breeding in the study population from 33 births in the first year to four births during the last year of the study. These results show that this type of vasectomy is a fast, simple, and safe technique for controlling monkey populations in sanctuaries.

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Correspondence to Ana Navarro-Serra.

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Navarro-Serra, A., Sanz-Cabañes, H. Open/close-ended vasectomy technique by single incision on vervet monkeys (Chlorocebus pygerythrus). Primates 61, 465–471 (2020).

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