Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2487 |
Resumo: | The aim of this study was the evaluation of some reproductive rates of a beef cattle herd that were naturally infected by the bovine herpesvirus 1 (BoHV-1), bovine viral diarrhea virus (BVDV) and Leptospira hardjo. In a herd with 1331 females, we randomly selected 208 animals that were distributed in three groups: i) 60 virgin heifers; ii) 60 first suckling cows; iii) 88 cows with two or more sucklings. All groups were evaluated for infectious bovine rinothracheitis (IBR), bovine viral diarrhea (BVD), and leptospirosis serological profile, and the reproductive performance in a breeding station that had artificial insemination (AI) followed by bull repass. The IBR, BVD and leptospirosis seropositive rates in the three groups were 68.3%, 98.0% and 78.8%, respectively. The highest seropositives rates for the three infections simultaneously were obtained in the cows with two or more sucklings. The three groups presented low reproductive performance with 35.6% of repeat breeding; 18.6% of abortions, 2.3 semen doses by born calf, and 35.6% of born calves by AI. The lowest reproductive performance was observed in the virgin heifers group. The serological profile analysis before the breeding time with association with the results of some reproductive efficiency rates suggest the BoHV-1 and L. hardjo participation in the low reproductive performance observed in the beef cattle herd studied. |
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Semina. Ciências Agrárias (Online) |
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Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjoAvaliação do desempenho reprodutivo de um rebanho bovino de corte naturalmente infectado com o BoHV-1, BVDV e Leptospira hardjoCattleBovine herpesvirus 1Bovine viral diarrhea virusLeptospira hardjoSerology.BovinoHerpesvírus bovino 1Vírus da diarréia viral bovinaLeptospira hardjoSorologia.The aim of this study was the evaluation of some reproductive rates of a beef cattle herd that were naturally infected by the bovine herpesvirus 1 (BoHV-1), bovine viral diarrhea virus (BVDV) and Leptospira hardjo. In a herd with 1331 females, we randomly selected 208 animals that were distributed in three groups: i) 60 virgin heifers; ii) 60 first suckling cows; iii) 88 cows with two or more sucklings. All groups were evaluated for infectious bovine rinothracheitis (IBR), bovine viral diarrhea (BVD), and leptospirosis serological profile, and the reproductive performance in a breeding station that had artificial insemination (AI) followed by bull repass. The IBR, BVD and leptospirosis seropositive rates in the three groups were 68.3%, 98.0% and 78.8%, respectively. The highest seropositives rates for the three infections simultaneously were obtained in the cows with two or more sucklings. The three groups presented low reproductive performance with 35.6% of repeat breeding; 18.6% of abortions, 2.3 semen doses by born calf, and 35.6% of born calves by AI. The lowest reproductive performance was observed in the virgin heifers group. The serological profile analysis before the breeding time with association with the results of some reproductive efficiency rates suggest the BoHV-1 and L. hardjo participation in the low reproductive performance observed in the beef cattle herd studied.O objetivo desse trabalho foi avaliar a performance reprodutiva de um rebanho bovino de corte, criado extensivamente, naturalmente infectado pelo herpesvírus bovino 1 (BoHV-1), pelo vírus da diarréia viral bovina (BVDV) e pela Leptospira hardjo. No rebanho, constituído por 1.331 fêmeas, foram selecionados aleatoriamente 208 animais que foram subdivididos em três grupos: i) 60 novilhas virgens; ii) 60 vacas de primeira cria; iii) 88 vacas com duas ou mais crias. No período correspondente a uma estação de reprodução, obtida por inseminação artificial (IA) seguida por repasse com touro, foram avaliados o desempenho reprodutivo e os perfis sorológicos para a rinotraqueíte infecciosa bovina (IBR), a diarréia viral bovina (BVD) e a leptospirose. As taxas de animais soropositivos para IBR, BVD e leptospirose nos grupos avaliados foram de 68,3%, 98,0% e 78,8%, respectivamente. O grupo de animais com duas ou mais crias apresentou as maiores taxas de animais soropositivos para as três infecções simultaneamente. Os três grupos presentaram baixo desempenho reprodutivo com 35,6% de repetições de cio; 18,6% de abortamentos; 2,3 doses de sêmen por bezerro nascido e 35,6% de animais nascidos de IA. A mais baixa performance reprodutiva foi observada no grupo de novilhas. A análise do perfil sorológico anterior à estação de monta, em associação com os resultados de alguns parâmetros de eficiência reprodutiva sugere a provável participação do BoHV-1 e da L. hardjo no baixo desempenho reprodutivo do rebanho avaliado.UEL2006-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/248710.5433/1679-0359.2006v27n3p471Semina: Ciências Agrárias; Vol. 27 No. 3 (2006); 471-480Semina: Ciências Agrárias; v. 27 n. 3 (2006); 471-4801679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2487/2112Junqueira, José Ricardo C.Freitas, Júlio C. deAlfieri, Alice F.Alfieri, Amauri A.info:eu-repo/semantics/openAccess2009-10-09T14:41:52Zoai:ojs.pkp.sfu.ca:article/2487Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2009-10-09T14:41:52Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo Avaliação do desempenho reprodutivo de um rebanho bovino de corte naturalmente infectado com o BoHV-1, BVDV e Leptospira hardjo |
title |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
spellingShingle |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo Junqueira, José Ricardo C. Cattle Bovine herpesvirus 1 Bovine viral diarrhea virus Leptospira hardjo Serology. Bovino Herpesvírus bovino 1 Vírus da diarréia viral bovina Leptospira hardjo Sorologia. |
title_short |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
title_full |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
title_fullStr |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
title_full_unstemmed |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
title_sort |
Reproductive performance evaluation of a beef cattle herd naturally infected with the BoHV-1, BVDV and Leptospira hardjo |
author |
Junqueira, José Ricardo C. |
author_facet |
Junqueira, José Ricardo C. Freitas, Júlio C. de Alfieri, Alice F. Alfieri, Amauri A. |
author_role |
author |
author2 |
Freitas, Júlio C. de Alfieri, Alice F. Alfieri, Amauri A. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Junqueira, José Ricardo C. Freitas, Júlio C. de Alfieri, Alice F. Alfieri, Amauri A. |
dc.subject.por.fl_str_mv |
Cattle Bovine herpesvirus 1 Bovine viral diarrhea virus Leptospira hardjo Serology. Bovino Herpesvírus bovino 1 Vírus da diarréia viral bovina Leptospira hardjo Sorologia. |
topic |
Cattle Bovine herpesvirus 1 Bovine viral diarrhea virus Leptospira hardjo Serology. Bovino Herpesvírus bovino 1 Vírus da diarréia viral bovina Leptospira hardjo Sorologia. |
description |
The aim of this study was the evaluation of some reproductive rates of a beef cattle herd that were naturally infected by the bovine herpesvirus 1 (BoHV-1), bovine viral diarrhea virus (BVDV) and Leptospira hardjo. In a herd with 1331 females, we randomly selected 208 animals that were distributed in three groups: i) 60 virgin heifers; ii) 60 first suckling cows; iii) 88 cows with two or more sucklings. All groups were evaluated for infectious bovine rinothracheitis (IBR), bovine viral diarrhea (BVD), and leptospirosis serological profile, and the reproductive performance in a breeding station that had artificial insemination (AI) followed by bull repass. The IBR, BVD and leptospirosis seropositive rates in the three groups were 68.3%, 98.0% and 78.8%, respectively. The highest seropositives rates for the three infections simultaneously were obtained in the cows with two or more sucklings. The three groups presented low reproductive performance with 35.6% of repeat breeding; 18.6% of abortions, 2.3 semen doses by born calf, and 35.6% of born calves by AI. The lowest reproductive performance was observed in the virgin heifers group. The serological profile analysis before the breeding time with association with the results of some reproductive efficiency rates suggest the BoHV-1 and L. hardjo participation in the low reproductive performance observed in the beef cattle herd studied. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2487 10.5433/1679-0359.2006v27n3p471 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2487 |
identifier_str_mv |
10.5433/1679-0359.2006v27n3p471 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2487/2112 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 27 No. 3 (2006); 471-480 Semina: Ciências Agrárias; v. 27 n. 3 (2006); 471-480 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306058135502848 |