Reproductive disorders affecting 21-month-old bulls assessed by andrological examination
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.5433/1679-0359.2020v41n6Supl2p3199 http://hdl.handle.net/11449/206810 |
Resumo: | The objective of this study was to identify the prevalence of the main pathologies that affect the genital organs of young bulls. We used a database that contained data for 6,408 young Nelore bulls. The data were collected from June to August 2004 and 2005. The bulls were evaluated by andrological examination and semen samples were collected with the aid of an electroejaculation device. The animals were classified in terms of their sexual maturity as animals suitable for reproduction, animals suitable for reproduction in terms of natural service, animals temporarily unfit for reproduction, and animals excluded from reproduction. The reproductive disorders recorded in the excluded animals were classified as penile, testicular, anterior or posterior limb, epididymal, spermatic cord, spermatic, anal sphincter, foreskin, systemic, and seminal vesicle alterations. We used descriptive statistics and analysis of variance to analyze the data. Of the 6,408 bulls evaluated, 309 animals were excluded from reproduction (4.82%). The majority of the excluded bulls (31.7%) suffered from testicular-related pathologies (testicular asymmetry, small scrotal circumference for their age, orchitis, and hydrocele (64.28%, 32.65%, 2.04%, and 1.02%, respectively), seminal vesicle alterations (31.39%), sperm defects (17.15%), and penile alterations (6.79%). Of the 309 animals excluded from reproduction, 21 (6.79% of the excluded and 0.32% of the total animals) suffered from some type of penile alteration, such as persistence of the frenulum (16/21) and total or partial penile adhesion (5/21). Confining the herd for two months and subjecting the animals to their first andrological examination at a younger than usual age, with the objective of selling them, could be why there were high incidences of seminal vesicle pathologies (owing to the homosexual behavior of the males) and of penises with high adhesion rates, which are characteristic of animals that have not yet entered puberty. In general, the low percentage of animals excluded from reproduction in the studied herd indicates the adequacy of the selection program. |
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Reproductive disorders affecting 21-month-old bulls assessed by andrological examinationAfecções reprodutivas que acometem tourinhos (21 meses) avaliados por meio de exame andrológicoBovinesPathologiesReproductionThe objective of this study was to identify the prevalence of the main pathologies that affect the genital organs of young bulls. We used a database that contained data for 6,408 young Nelore bulls. The data were collected from June to August 2004 and 2005. The bulls were evaluated by andrological examination and semen samples were collected with the aid of an electroejaculation device. The animals were classified in terms of their sexual maturity as animals suitable for reproduction, animals suitable for reproduction in terms of natural service, animals temporarily unfit for reproduction, and animals excluded from reproduction. The reproductive disorders recorded in the excluded animals were classified as penile, testicular, anterior or posterior limb, epididymal, spermatic cord, spermatic, anal sphincter, foreskin, systemic, and seminal vesicle alterations. We used descriptive statistics and analysis of variance to analyze the data. Of the 6,408 bulls evaluated, 309 animals were excluded from reproduction (4.82%). The majority of the excluded bulls (31.7%) suffered from testicular-related pathologies (testicular asymmetry, small scrotal circumference for their age, orchitis, and hydrocele (64.28%, 32.65%, 2.04%, and 1.02%, respectively), seminal vesicle alterations (31.39%), sperm defects (17.15%), and penile alterations (6.79%). Of the 309 animals excluded from reproduction, 21 (6.79% of the excluded and 0.32% of the total animals) suffered from some type of penile alteration, such as persistence of the frenulum (16/21) and total or partial penile adhesion (5/21). Confining the herd for two months and subjecting the animals to their first andrological examination at a younger than usual age, with the objective of selling them, could be why there were high incidences of seminal vesicle pathologies (owing to the homosexual behavior of the males) and of penises with high adhesion rates, which are characteristic of animals that have not yet entered puberty. In general, the low percentage of animals excluded from reproduction in the studied herd indicates the adequacy of the selection program.Scientific Systems Company, IncorporatedFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista FCAV/UNESP Câmpus de Jaboticabal Subárea Reprodução Animal e ObstetríciaUniversidade Federal dos Vales do Jequitinhonha e Mucuri UFVJM Instituto de Ciências AgráriasUniversidade Federal Rural da Amazônia UFRA Instituto da Saúde e Produção AnimalUniversidade Federal de Viçosa UFVFaculdade de Ciências Agrárias e Veterinárias Universidade Estadual Paulista FCAV/UNESP Câmpus de Jaboticabal Subárea Reprodução Animal e ObstetríciaUniversidade Estadual Paulista (Unesp)Universidade Federal de Viçosa (UFV)Instituto da Saúde e Produção Animalde Oliveira, Ana Paula Luiz [UNESP]Lobo, Adalfredo Rochade Castilho, Erick FonsecaGuimarães, José DomingosMelo, Thiago VasconcelosMota, Diego AzevedoSiqueira, Jeanne Broch2021-06-25T10:44:14Z2021-06-25T10:44:14Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3199-3209http://dx.doi.org/10.5433/1679-0359.2020v41n6Supl2p3199Semina:Ciencias Agrarias, v. 41, n. 6, p. 3199-3209, 2020.1679-03591676-546Xhttp://hdl.handle.net/11449/20681010.5433/1679-0359.2020v41n6Supl2p31992-s2.0-85095821248Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSemina:Ciencias Agrariasinfo:eu-repo/semantics/openAccess2024-06-06T18:09:06Zoai:repositorio.unesp.br:11449/206810Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:50:12.520016Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination Afecções reprodutivas que acometem tourinhos (21 meses) avaliados por meio de exame andrológico |
title |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
spellingShingle |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination de Oliveira, Ana Paula Luiz [UNESP] Bovines Pathologies Reproduction |
title_short |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
title_full |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
title_fullStr |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
title_full_unstemmed |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
title_sort |
Reproductive disorders affecting 21-month-old bulls assessed by andrological examination |
author |
de Oliveira, Ana Paula Luiz [UNESP] |
author_facet |
de Oliveira, Ana Paula Luiz [UNESP] Lobo, Adalfredo Rocha de Castilho, Erick Fonseca Guimarães, José Domingos Melo, Thiago Vasconcelos Mota, Diego Azevedo Siqueira, Jeanne Broch |
author_role |
author |
author2 |
Lobo, Adalfredo Rocha de Castilho, Erick Fonseca Guimarães, José Domingos Melo, Thiago Vasconcelos Mota, Diego Azevedo Siqueira, Jeanne Broch |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal de Viçosa (UFV) Instituto da Saúde e Produção Animal |
dc.contributor.author.fl_str_mv |
de Oliveira, Ana Paula Luiz [UNESP] Lobo, Adalfredo Rocha de Castilho, Erick Fonseca Guimarães, José Domingos Melo, Thiago Vasconcelos Mota, Diego Azevedo Siqueira, Jeanne Broch |
dc.subject.por.fl_str_mv |
Bovines Pathologies Reproduction |
topic |
Bovines Pathologies Reproduction |
description |
The objective of this study was to identify the prevalence of the main pathologies that affect the genital organs of young bulls. We used a database that contained data for 6,408 young Nelore bulls. The data were collected from June to August 2004 and 2005. The bulls were evaluated by andrological examination and semen samples were collected with the aid of an electroejaculation device. The animals were classified in terms of their sexual maturity as animals suitable for reproduction, animals suitable for reproduction in terms of natural service, animals temporarily unfit for reproduction, and animals excluded from reproduction. The reproductive disorders recorded in the excluded animals were classified as penile, testicular, anterior or posterior limb, epididymal, spermatic cord, spermatic, anal sphincter, foreskin, systemic, and seminal vesicle alterations. We used descriptive statistics and analysis of variance to analyze the data. Of the 6,408 bulls evaluated, 309 animals were excluded from reproduction (4.82%). The majority of the excluded bulls (31.7%) suffered from testicular-related pathologies (testicular asymmetry, small scrotal circumference for their age, orchitis, and hydrocele (64.28%, 32.65%, 2.04%, and 1.02%, respectively), seminal vesicle alterations (31.39%), sperm defects (17.15%), and penile alterations (6.79%). Of the 309 animals excluded from reproduction, 21 (6.79% of the excluded and 0.32% of the total animals) suffered from some type of penile alteration, such as persistence of the frenulum (16/21) and total or partial penile adhesion (5/21). Confining the herd for two months and subjecting the animals to their first andrological examination at a younger than usual age, with the objective of selling them, could be why there were high incidences of seminal vesicle pathologies (owing to the homosexual behavior of the males) and of penises with high adhesion rates, which are characteristic of animals that have not yet entered puberty. In general, the low percentage of animals excluded from reproduction in the studied herd indicates the adequacy of the selection program. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 2021-06-25T10:44:14Z 2021-06-25T10:44:14Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.5433/1679-0359.2020v41n6Supl2p3199 Semina:Ciencias Agrarias, v. 41, n. 6, p. 3199-3209, 2020. 1679-0359 1676-546X http://hdl.handle.net/11449/206810 10.5433/1679-0359.2020v41n6Supl2p3199 2-s2.0-85095821248 |
url |
http://dx.doi.org/10.5433/1679-0359.2020v41n6Supl2p3199 http://hdl.handle.net/11449/206810 |
identifier_str_mv |
Semina:Ciencias Agrarias, v. 41, n. 6, p. 3199-3209, 2020. 1679-0359 1676-546X 10.5433/1679-0359.2020v41n6Supl2p3199 2-s2.0-85095821248 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Semina:Ciencias Agrarias |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
3199-3209 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128423000801280 |