Aspectos macroscópicos e morfométricos dos testículos em catetos e queixadas

Abstract

Macroscopic and morphometric features of testicles in collared peccary and white-lipped peccary. This work aims to describe the morphometrical aspects on the testicles of the collared peccary and white-lipped peccary. The material derived from the Devaneio Pro-Fauna Farm, Iguape, SP (Reg.1/3593/08480). From 33 white-lipped peccary and 20 collared peccary after the slaughter, the testicles were removed and morphometric information was taken like: length, width and thickness (with the help of a pachymeter). Testicles are oval shaped, located into the pelvic region, laying dorsocaudally and they have intermediary position. The mediastinun testis is in the center of the testis and ends on the capitata extremity. The adult white-lipped peccary has 30.92 ± 3.82 kg in average and 78.89 ± 4.77 cm of length and the young has 22.93 ± 2.07 kg and 71.57 ± 3.95 cm of length. Results obtained show that in the adult white-lipped peccary group, the right testicle measured, in average, length, width and thickness of 5.36 ± 0.64cm, 3.64 ± 0.64cm and 3.30 ± 0.52cm respectively while the left testicles measured, in average, 5.45 ± 0.77cm, 3.68 ± 0.59cm and 3.32 ± 0.54cm. In the young group the testis measured in average 3.20 ± 0.44cm, 2.12 ± 0.26cm and 2.11 ± 0.40cm, to right testis and 3.23 ± 0.47cm, 2.21 ± 0.39cm and 1.99 ± 0.36cm, to left testis, to length, width and thickness, respectively. As per the collared peccary, the right testicles measured, in average, 4.36 ± 0.38cm; 2.74 ± 0.27cm and 2.33 ± 0.46cm respectively for length, width and thickness, when for the left ones measures were 4.19 ± 0.36cm, 2.68 ± 0.31cm and 2.34 ± 0.28cm. The data does not have significative difference (p<0.05) between right and left testicular measurements using the Qui-square test.Key words: collared peccary, white-lipped peccary, testicles, genitals, Tayassu. ResumoAspectos macroscópicos e morfométricos dos testículos em catetos e queixadas. Este trabalho objetiva fornecer dados macroscópicos e morfométricos dos testículos dos catetos e queixadas. O material utilizado consistiu de catetos e queixadas oriundos da Fazenda Devaneio Pró-Fauna, Iguape, SP (Reg.1/3593/08480). Em 33 queixadas e 20 catetos, após o abate, os testículos foram colhidos e tomados dados morfométricos como: comprimento, largura e espessura (com o auxílio de um paquímetro). Os testículos são ovalados, localizados na região pélvica, inclinados dorso-caudalmente e possuem posição intermediária. O mediastino testicular esta no centro do testículo, ligeiramente desviado para a margem epididimária deste, e termina na extremidade capitata. Os queixadas adultos possuem em média 30,92 ± 3,82 kg de peso corporal e 78,89 ± 4,77 cm de comprimento corporal, enquanto os jovens apresentam 22,93 ± 2,07 kg e 71,57 ± 3,95 cm de comprimento. Os resultados demonstram que no grupo de queixadas adultos estudado o testículo direito teve comprimento, largura e espessura médios de 5,36 ± 0,64cm; 3,64 ± 0,64cm e 3,30 ± 0,52cm respectivamente, enquanto que o esquerdo teve 5,45 ± 0,77cm; 3,68 ± ...

Puberty in male collared peccary (Pecari tajacu) determined by quantitative analysis of spermatogenic cells

“…A positive correlation was observed between the testis weight and the length, width, tubule diameter, and the number of spermatogenic cells, which corroborates findings for other mammals like Sus scrofa domesticus (França 1987;França et al 2000), Bubalis bubalis (Melo 1991;Ohashi 1993;Ohashi et al 2007), Capra hircus (Becker-Silva 2000), and the Tayassu pecari (Sonner et al 2004).…”

Morphological development of the testicles and spermatogenesis in guinea pigs (Cavia porcellus Linnaeus, 1758)

“…After puberty, testicular development in guinea pigs was similar to that in other mammal and rodent species (COUROT, HOCHEREAUA- DE REVIERS and ORTAVANT, 1970;ASSIS NETO, CARVALHO, MELO et al, 2003a). Highly significant correlation (p < 0.01) between body mass, age and other testicular parameters agreed with Murrah buffalo bulls (LUZ, SANTOS, ANDRIGHETTO et al, 2013) and contrasted to the correlation described only between the testis mass and the length, width and tubule diameter in collared peccary (GUIMARÃES, CARDOSO, FERREIRA et al, 2013) and between testicular mass and length and between testicular mass and width (FRANÇA, SILVA-JUNIOR, CHIARINI-GARCIA et al, 2000;FERREIRA, GUIMARÃES, LUZ-RAMOS et al, 2004;SONNER, MIGLINO, SANTOS et al, 2004;OHASHI, MIRANDA, CORDEIRO et al, 2007). Thus, highly significant correlation (p < 0.01) between age, body mass and testicular biometric data indicated that, in guinea pigs, testicular development depended both on age and body development, as in other rodent species (ASSIS NETO, CARVALHO, MELO et al, 2003a;FERREIRA, GUIMARÃES, LUZ-RAMOS et al, 2004), in opposition to other mammal species, in which testicular development rather depends on body development (COUROT, HOCHEREAUA-DE REVIERS and ORTAVANT, 1970) or those with gradual loss in the correlations between testicular measurements and body mass in the adult phase (SOUZA, ARAÚJO, OLIVEIRA et al, 2010).…”

Epididymal morphophysiology of adult collared peccaries (Pecari tajacu)

“…Regarding the reproductive physiology of male collared peccaries, Hellgren et al (1995); Carvalhal et al (2000); Sonner et al (2004); Kahwage et al (2010) and Garcia et al (2012), among other authors, observed some andrological aspects, such as: levels of testosterone, testicular biometrics and semen analysis.…”