Avaliação uterina e diagnóstico de gestação em macaco-da-noite (Aotus azarai infulatus) por ultra-som em modo B

Abstract

The objectives of this study were to evaluate the uterus and diagnose the gestation of owl monkeys using ultrasound. Twelve couples were selected, where five were primiparous and seven multiparous females from the National Primate Center reproductive colony, Ananindeua-PA. The procedures were carried out using the GE® Logiq 100 MP, equipped with a 7.5 MHz linear probe. The females showed a simple uterus, of elongated shape, regular outline and homogeneous echogenic texture. The evaluation was similar to the uterus of other primate species. The uterine measurements of primiparous and multiparous females were: craniocaudal diameter (18.5 ± 1.36; 19.09 ± 1.42 mm), ventrodorsal (5.4 ± 0.59; 5.73 ± 0.7 mm), transversal (9.1 ± 0.59; 9.32 ± 0.58 mm) and uterine volume (0.476 ± 0.08; 0.540 ± 0.1 cm3) (medium ± stand derivation), respectively. The uterine volume showed a positive correlation with the number of births. The gestational sac and the embryonic echo were visible between 28 and 38 days after mating, and these findings were preponderant to confirm the animals pregnancy state. Between 48 and 68 days after the beginning of the ultrasound monitoring, embryonic death was identified in 100% of the gestations. The maximum uterine volume observed was 6.12 cm3. The chemical (use of tranquilizers) and husbandry factors (capture stress) may be related to the prenatal death.