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

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dc.contributor.authorSantos e Cunha, Michel
dc.contributor.authorBonato, Denis Vinicius
dc.contributor.authorVrisman, Dayane Priscila [UNESP]
dc.contributor.authorTaira, Augusto Ryonosuke [UNESP]
dc.contributor.authorBueno Borges, Luisa Pucci
dc.contributor.authorAlbuquerque, Rodrigo dos Santos
dc.contributor.authorCoutinho, Leandro Nassar
dc.contributor.authorHilario da Silva, Marlon Richard
dc.contributor.authorNeumann, Mikael
dc.contributor.authorMaia Teixeira, Pedro Paulo
dc.contributor.institutionUniv Franca
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAmazonia Rural Fed Univ
dc.contributor.institutionMidwest State Univ
dc.contributor.institutionPara Fed Univ
dc.date.accessioned2019-10-04T12:14:32Z
dc.date.available2019-10-04T12:14:32Z
dc.date.issued2019-07-01
dc.description.abstractThe objective of the present study was to carry out the andrological evaluation of young bulls fed a hyper-energetic diet by correlating traditional andrological data with the results of ultrasonographic and histological tests. The animals were kept in confinement for 94 days with an adaptation period of ten days. Three evaluations were performed with 28 day intervals between each. The animals were weighed and testicular morphometry, semen analysis, ultrasonographic testicular evaluation with a visual scale using the histogram method and histopathological evaluation were performed. Ponderal data, testicular biometry, sperm parameters and ultrasound data were not closely correlated after 94 days (r(2) < 0.3). Body weight (BW), scrotal circumference (SC) and testicular volume (TV) varied significantly across all the time periods (D28, D56 and D84). Visual ultrasound analysis revealed that the testicular stroma were homogenous until the 28th day, with minimal changes in echogenicity. By day 56, although the images remained homogeneous, hypoechoic areas had appeared. From the 84th day heterogenicity of the testicular stroma was observed in some animals. These included hypoechoic and hyperechoic areas, sometimes with both patterns in the same testis. Significant differences were observed between the visual and histological ultrasonographic analysis at the beginning of the experiment and on the 56th and 84th days (P < 0.05). The histological evaluation revealed several alterations which indicated inflammatory processes, such as the presence of fibrous connective tissue, as well as the atrophy and vacuolization of the cytoplasm, resulting in cellular degeneration. While nutritional management employing a hyperenergetic diet encouraged testicular and ponderal growth, it also resulted in the appearance of pathologies and visible changes to the echogenicity of the testicular stroma, confirmed by histological evaluation, which led to spermatogenesis disorders.en
dc.description.affiliationUniv Franca, BR-14404600 Franca, SP, Brazil
dc.description.affiliationSao Paulo State Univ, Coll Agr Sci & Vet Med, BR-14884900 Jaboticabal, SP, Brazil
dc.description.affiliationAmazonia Rural Fed Univ, Anim Hlth & Prod Inst, Belem, Para, Brazil
dc.description.affiliationMidwest State Univ, Dept Vet, BR-85040080 Guarapuava, Parana, Brazil
dc.description.affiliationPara Fed Univ, Vet Med Inst, BR-68740970 Castanhal, Para, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Agr Sci & Vet Med, BR-14884900 Jaboticabal, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.format.extent85-90
dc.identifierhttp://dx.doi.org/10.1016/j.livsci.2019.04.006
dc.identifier.citationLivestock Science. Amsterdam: Elsevier Science Bv, v. 225, p. 85-90, 2019.
dc.identifier.doi10.1016/j.livsci.2019.04.006
dc.identifier.issn1871-1413
dc.identifier.urihttp://hdl.handle.net/11449/184542
dc.identifier.wosWOS:000472698000012
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofLivestock Science
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectUltrasound
dc.subjectTesticular stroma
dc.subjectHistology
dc.subjectDegeneration
dc.subjectCattle
dc.titleHistopathological and ultrasonographic testicular evaluation of young bulls fed a hyperenergetic dieten
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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