Histopathological and ultrasonographic testicular evaluation of young bulls fed a hyperenergetic diet

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

“…Hyperechoic spots observed in the testicular parenchyma were classified as fibrotic spots. Cardilli et al [ 12 ] classified these points as microlithiasis; however, the ultrasound images in this study were similar to those observed in a study conducted by Cunha et al [ 14 ], who confirmed the diagnosis of fibrosis through histopathology.…”

Pathophysiology, diagnosis, and management of testicular degeneration in the bull

“…A suggested cause of the testicular insult was the release of bacterial toxins after ruminal acidosis that could have caused a local inflammatory reaction within the gonadal tissue. 15 Rare, congenital conditions such as congenitally short scrotum and incomplete testes descent into the 3 scrotum, and acquired lesions limiting free movement of these testes may impair thermoregulatory mechanisms enough to cause degeneration. 5 Higher than normal testicular temperatures in one testis may impede thermoregulatory mechanisms in the contralateral testis causing a disruption in spermatogenesis or in severe cases, degeneration of both testes.…”

“…A starch rich diet was fed to Angus x Charolais bulls (n = 40) for 94 days with a mean age of 14 ± 1.7 months at the beginning of the trial. 15 After a 10-day period of adaptation, body weight, an assessment of testes size, and ultrasonography of the testes were performed every 28 days from the beginning of the measurement period until day 84. At the end of the experiment each bull underwent electroejaculation and semen analysis.…”

“…However, evidence of an insult to spermatogenesis was present on 100% of the histograms. 15 Although examination of testes histopathology is not practical in most settings the occurrence of degenerative changes, including permanent lesions, varied between individuals and areas within the testic. 15…”