Computed Tomography Evaluation of Frozen or Glycerinated Bradypus variegatus Cadavers: A Comprehensive View with Emphasis on Anatomical Aspects.

Bradypus variegatus has unique anatomical characteristics, and many of its vascular and digestive tract aspects have yet to be clearly understood. This lack of information makes clinical diagnoses and surgical procedures difficult. The aim of this study was to evaluate the anatomical aspects of frozen and glycerinated corpses of B. variegatus using computed tomography (CT), emphasizing vascular and digestive contrast studies. Nine corpses that died during routine hospital were examined via CT in the supine position with scanning in the craniocaudal direction. In frozen cadavers, the contrast was injected into a cephalic vein after thawing and, subsequently, was administered orally. In addition to bone structures, CT allowed the identification of organs, soft tissues, and vascular structures in specimens. Visualization of soft tissues was better after contrast been administered intravenously and orally, even without active vascularization. Furthermore, the surfaces of the organs were highlighted by the glycerination method. With this technique, it was possible to describe part of the vascularization of the brachial, cervical, thoracic, and abdominal regions, in addition to highlighting the esophagus and part of the stomach. CT can be another tool for the evaluation of B. variegatus cadavers by anatomists or pathologists, contributing to the identification of anatomical structures.

Testicular alterations and semen quality in a selected group of breeding buffaloes.

Testicular ultrasound enables the evaluation of changes in the testicular parenchyma. This study aimed to report the occurrence of hypoechogenic testicular alterations and their relationship with semen quality in five breeding buffaloes. Two buffaloes presented with hyperechoic points characteristic of fibrosis and anechoic density content between the parietal and visceral tunica. The two bulls without ultrasonographic changes showed higher average trajectory speed, linear velocity, curvilinear velocity, amplitude of lateral displacement of the spermatic head, total motility, progressive motility, fast speed, and acrosomal membrane values within the normal range. The number of spermatozoa with major and total defects was higher in the group of animals without alterations. The three buffaloes that presented with testicular alterations produced semen within established freezing standards.

Avaliação ultrassonográfica, andrológica e histopatológica de novilhos confinados em dieta hiperenergética / Ultrasonographic, soundness and histopathologic evaluation of feedlot steers high-energy diet

The aim of this study was to andrologicaly evaluate confined young bulls submitted to a diet rich instarch, correlating andrological traditional data with ultrasonography and testicular histology. 40 bullsconfined for 94 days were submitted to 4 assessments to obtain testicular biometry, ultrasound images andsemen collection and evaluation of the testes after slaughter. There was a progressive increase in weight 341.7 ±15 kg at baseline to 453.6 ± 30 kg at the end of feedlot in 94 days, and testis, with CE of 28.44 ± 3:36 cm to34.68 ± 8.21 cm, VT 677.5 ± 234.7 mm3 to 2663.5 ± 1004 mm3. Ultrasound images showed changes from the56th day. Histological analysis presented alterations from inflammatory findings and testicular degeneration.The study showed that feedlot bulls submitted to high-energy diet rich in starch presented progressive testiculardevelopment and weight, however, it resulted in sonographic, histopathologic and andrological alterations.(AU)

Avaliação ultrassonográfica, andrológica e histopatológica de novilhos confinados em dieta hiperenergética / Ultrasonographic, soundness and histopathologic evaluation of feedlot steers high-energy diet

The aim of this study was to andrologicaly evaluate confined young bulls submitted to a diet rich instarch, correlating andrological traditional data with ultrasonography and testicular histology. 40 bullsconfined for 94 days were submitted to 4 assessments to obtain testicular biometry, ultrasound images andsemen collection and evaluation of the testes after slaughter. There was a progressive increase in weight 341.7 ±15 kg at baseline to 453.6 ± 30 kg at the end of feedlot in 94 days, and testis, with CE of 28.44 ± 3:36 cm to34.68 ± 8.21 cm, VT 677.5 ± 234.7 mm3 to 2663.5 ± 1004 mm3. Ultrasound images showed changes from the56th day. Histological analysis presented alterations from inflammatory findings and testicular degeneration.The study showed that feedlot bulls submitted to high-energy diet rich in starch presented progressive testiculardevelopment and weight, however, it resulted in sonographic, histopathologic and andrological alterations.