Coleta e avaliação do sêmen de catetos (Tayassu tajacu)

Abstract

The aim of this research was to test two electroejaculation protocols and to study the motility, vigor, concentration and morphologic alterations in captive collared peccaries semen. Six males with age between 10 and 18 years had used. The animals were anesthetized with zolazepan cloridrate and tiletamine cloridrate and the semen collected by electroejaculation. Average semen volume was 3,11 + 0,9mL, motility was 48.7 ± 31.5%, vigor, 2.1 + 1.4 and concentration, 87.0 + 53.1 x 10 6 sptz/ mL. It was concluded with this research that three sessions of 15 stimulations/12 volts was considered efficient for collared peccaries semen collection and that morphological spermatic results were compatible with testicular degeneration.Key words: Tayassu tajacu, semen, electroejaculation. ResumoObjetivou-se com esta pesquisa testar dois protocolos de eletroejaculação e estudar a motilidade espermática progressiva, vigor, concentração e alterações morfológicas dos espermatozóides de catetos adultos criados em cativeiro. Utilizaram-se seis machos com idade entre 10 e 18 anos. Os animais foram anestesiados com cloridrato de zolazepan e cloridrato de tiletamina e em seguida coletou-se o sêmen com auxílio de um eletroejaculador. O volume médio do ejaculado foi 3,11 + 0,9mL, a motilidade espermática progressiva foi 48,7 ± 31,5%, o vigor, 2,1 + 1,4 e a concentração espermática média, 87,0 + 53,1 x 10 6 sptz/mL. Concluiu-se com esta pesquisa que a utilização de três sessões de 15 estímulos de 12 volts foi suficiente para coleta de sêmen de catetos anestesiados e que os resultados da morfologia espermática da maioria dos catetos trabalhados foram compatíveis com o quadro de degeneração testicular. Palavras-chave: Tayassu tajacu, sêmen, eletroejaculação.Biota Neotropica v5 (n2) -http://www.biotaneotropica.org.br/v5n2/pt/abstract?article+BN00705022005

Collared Pecary (tayassu tajacu) as a new model of renal ischemic injury induced by clamping the renal artery

“…The food items most commonly ingested by peccaries are maize, cassava , pumpkin , sugar cane , balanced feed for pigs or horses (14% crude protein) and banana pasture (cane, elephant grass, brachiaria and cornstalk ) in specific quantities [15][16][17] .…”

Effects of atipamezole and medetomidine administration on seminal variables and functions of erection and ejaculation of the collared peccary (Tayassu tajacu) after electroejaculation

“…Since 1989, studies have been conducted on the collared peccary, and their spermatogenesis has been described [ 17 ]. Subsequently, the seminal evaluation of this species was performed with tiletamine/zolazepam administration as the anesthetic protocol [ 18 ], and later, propofol was compared with a treatment of acepromazine/tiletamine/zolazepam [ 19 ]. Most recently, protocols including acepromazine/ketamine [ 20 ] and propofol alone [ 3 ] have been used for the collection of semen in this species.…”

“…In a few studies conducted on electroejaculation in collared peccaries, the semen was tested after electroejaculation to see whether the pre-anesthetic or anesthetic drugs used for sedation, restraint, or anesthesia correlated with differences in sperm quality [ 3 ],[ 5 ],[ 18 ],[ 20 ]. The aim of this study was to compare the effects of medetomidine and atipamezole administration on the seminal variables of collared peccaries undergoing electroejaculation estimulation and to determine whether these drugs affected the erectile or ejaculatory function in this species.…”