Pathologic evaluation of testis and epididymis of hairy rams in the semi-arid region of Piaui State

Costa, F.L.A.; Silva, S.M.M.S.; Nascimento, Evaldo

doi:10.1590/s0102-09352007000500004

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…In conclusion, this report describes the characteristics and prevalence of ultrasonographic lesions and histopathologic testicular degeneration in a group of yearling rams on the island of St. Kitt's. Previous reports in sheep demonstrated testicular degeneration ranging from 13% to 37.5% based on histopathology without examination by ultrasound . To the authors’ knowledge, this is the first report correlating testicular degeneration with associated ultrasound abnormalities in a group of rams.…”

Section: Discussionmentioning

confidence: 52%

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The prevalence of ultrasonographic abnormalities and histopathologic lesions is high in testes of yearling tropical hair rams

Dascanio

Roberson

Pfent

et al. 2019

Vet Radiology Ultrasound

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Ultrasonography is commonly used to examine testes as part of a breeding soundness examination in sheep, especially, in cases of infertility or when gross testicular abnormalities are present.A descriptive, prospective, prevalence study was conducted to characterize the ultrasonographic, histopathologic, and spermatozoal morphology abnormalities present in a group of yearling tropic hair rams on the island of St. Kitts. Hyperechoic and shadowing abnormalities increased over a 6 month study period. Hyperechoic abnormalities were present in one or both testes in 89% (25/28) of yearling rams and 71% (40/56) of testes at castration. Shadowing abnormalities were present in one or both testes in 46% (13/28) of rams and 34% (19/56) of testes at castration. Shadowing was present more with moderate and severe hyperechoic abnormalities, with few testes in the mild category having any shadowing. As hyperechoic and shadowing abnormalities increased in severity, so did the severity of microscopic lesions including increased interstitial cellularity/fibrosis, interstitial mineralization, seminiferous tubules mineralization (hyperechoic only), and chronic lymphoplasmacytic orchitis. There were no spermatozoal morphologic abnormalities other than an increase in distal cytoplasmic droplets. The study findings detail a pathologic event in this group of yearling rams that has an unknown etiology. Potential causes may include scrotal insulation, trauma, infectious causes, immunity alterations, nutritional imbalances, and ingestion of a toxin.Further studies are required to elucidate the causative agent. K E Y W O R D Sdegeneration, histology, ovine, testicular ultrasound 338

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Section: Discussionmentioning

confidence: 52%

“…In bulls, elevated scrotal temperature has led to detached heads, acrosomal defects, nuclear vacuoles, pyriform heads, microcephalic sperm, coiled tails, and protoplasmic droplets . Pathologic changes of the testis have been reported in hair rams in Brazil . In that study, 53 rams ranging from 15 to 36 months were examined.…”

Section: Introductionmentioning

confidence: 99%

The prevalence of ultrasonographic abnormalities and histopathologic lesions is high in testes of yearling tropical hair rams

Dascanio

Roberson

Pfent

et al. 2019

Vet Radiology Ultrasound

View full text Add to dashboard Cite

show abstract

“…The Male animal is considered a source of male gamete (1) which can be used for natural or artificial insemination purposes. Male reproductive system is exposed to many serious infections or disorders during the animal lifespan which consider a pathological conditions like trauma, injuries, toxicities, lack of libido and inflammations (2,3). In Northern Iraq, breeding season start at begging of June (4), short time before breeding season, owner and clinician involved with male breeding soundness to prepare rams to be ready and healthy for ewes mating (5).…”

Section: Introductionmentioning

confidence: 99%