Utilização de ultrassonografia testicular em modo B como exame complementar na avaliação andrológica de reprodutores caprinos criados em clima tropical

Abstract

The objective of this study was to evaluate the use of ultrasound as a complementary test in the evaluation of testicular parenchyma in andrologicexamination of goats chosen as procreator, comparing the images taken with the physical and sperm andrological examination. The data were obtained after evaluation of 30 animals, from the municipalities of São José de Ribamar, Raposa, São Luís and Itapecuru-Mirim, Maranhão State, divided into three groups separated by age, group 1 (G1) comprised 10 animals aged 18 months and body condition score (CS) averaged 2.70 ± 0.42, group 2 (G2) comprised of 10 animals from 19 to 30 months and average EC of 2.95 ± 0.28 , group 3 (G3) comprised of 10 animals over 31 months and average EC of 2.85 ± 0.58. The testicular evaluation was performed in all animals being analyzed the means of the scrotal circumference (25.92 cm ± 2.16 G1, G2 27.04 ± 3.51 cm; G3 28.33 ± 3.75 cm), testicular length (G1 7.77 ± 1.13 cm, 8.85 cm ± 2.11 G2, G3 8.92 cm ± 1.71), testicular width (G1 4.46 ± 0.52 cm, 5.30 cm ± 0.78 G2, G3 5.14 ± 0.98 cm), testicular fulness (cm3 G1 249.60 ± 84.20; 390.00 ± 109.00 cm3; G3 401.00 ± 205.00 cm3). Semen was analyzed according to the rules of CBRA (1998), being analyzed the means of ejaculate bulk (G1 1.27 ± 0.37 ml, 0.50 ± 1.37 ml G2, G3 1.65 ± 0.53 ml ), motility (20.00 ± 70.00% G1, G2 58.50 ± 10.60%; G3 66.00 ± 14.50 ml) of the vortex (2.80 ± 0.75 G1, G2 2, 90 ± 0.70, G3 3.20 ± 0.54), vigor (G1 2.90 ± 0.39, G2 2.80 ± 0.63, G3 2.80 ± 0.68), concentration ( 1795 ± 806 x106sptz/ml G1, G2 x106sptz/ml 2011 ± 1962; x106sptz/ml G3 2886 ± 1352) and total defects (G1 33.80% ± 9.05, 25.90% ± 8.80 G2, G3 40.40% ± 11.20). There was a significant difference (p <0.05) between groups in the parameter testicular fulness and sperm concentration parameter between the G1 and G3. Testicular fulness showed up as significant parameter for selection of procreators. The images showed a hypoechoic parenchyma in relation to the testicular mediastinum already established as standard in other species, was also observed that the ultrasound evaluation of testicular parenchyma could be more effective than testicular palpation for the diagnosis of various diseases. After analysis of the images by ImageJ software ®, there was not significant difference (p <0.05) in the echogenic pattern between the groups.