Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae).
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/47271 https://doi.org/10.1590/S1415-47572005000200011 |
Resumo: | The objective of this study was to evaluate environmental factors that affect infestation of Caracu cattle breed by horn fly (Haematobia irritans) and to estimate genetic parameters for level of infestation. Infestation was evaluated on females from two herds in two consecutive years. Total number of flies on animals (FC) was counted, an infestation score (FS: 1 to 5) was recorded according to the estimated number of flies on animals, and number of parasites in photographs (FF) taken when the animals were evaluated was also counted. On each animal from one to eight observations were taken. A total of 3,836, 2,751 and 3,754 records from 718 animals were obtained for FC, FF and FS, respectively. The incidence of flies was lower during winter and higher during summer, and the thicker the hair coat of the animal the greater the infestation. Heritabilities and repeatabilities were equal to 0.10 and 0.10, 0.08 and 0.12, and 0.06 and 0.08, for FC, FF and FS, respectively. Findings indicate that selection for FC will result in low genetic progress and that animals should be evaluated more than once for selection purposes. |
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Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae).Horn fly countsGenéticaGenetic correlationHeritabilityRepeatabilityThe objective of this study was to evaluate environmental factors that affect infestation of Caracu cattle breed by horn fly (Haematobia irritans) and to estimate genetic parameters for level of infestation. Infestation was evaluated on females from two herds in two consecutive years. Total number of flies on animals (FC) was counted, an infestation score (FS: 1 to 5) was recorded according to the estimated number of flies on animals, and number of parasites in photographs (FF) taken when the animals were evaluated was also counted. On each animal from one to eight observations were taken. A total of 3,836, 2,751 and 3,754 records from 718 animals were obtained for FC, FF and FS, respectively. The incidence of flies was lower during winter and higher during summer, and the thicker the hair coat of the animal the greater the infestation. Heritabilities and repeatabilities were equal to 0.10 and 0.10, 0.08 and 0.12, and 0.06 and 0.08, for FC, FF and FS, respectively. Findings indicate that selection for FC will result in low genetic progress and that animals should be evaluated more than once for selection purposes.ANGELINA BOSSI FRAGA, Universidade Federal de Alagoas; MAURICIO MELLO DE ALENCAR, CPPSE; LEOPOLDO ANDRADE DE FIGUEIREDO, Instituto de Zootecnia do Estado de São Paulo; ALEXANDER GEORGE RAZOOK, Instituto de Zootecnia do Estado de São Paulo; JOSLAINE NOELY DOS SANTOS GONÇALVES CYRILLO, Instituto de Zootecnia do Estado de São Paulo.FRAGA, A. B.ALENCAR, M. M. deFIGUEIREDO, L. A. deRAZOOK, A. G.CYRILLO, J. N. DOS S. G.2023-05-08T13:51:06Z2023-05-08T13:51:06Z2006-01-232005info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleGenetics and Molecular Biology, Ribeirão Preto, SP, v. 28, n. 2, p. 242-247, 2005.http://www.alice.cnptia.embrapa.br/alice/handle/doc/47271https://doi.org/10.1590/S1415-47572005000200011enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2023-05-08T13:51:06Zoai:www.alice.cnptia.embrapa.br:doc/47271Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542023-05-08T13:51:06falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542023-05-08T13:51:06Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
title |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
spellingShingle |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). FRAGA, A. B. Horn fly counts Genética Genetic correlation Heritability Repeatability |
title_short |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
title_full |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
title_fullStr |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
title_full_unstemmed |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
title_sort |
Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae). |
author |
FRAGA, A. B. |
author_facet |
FRAGA, A. B. ALENCAR, M. M. de FIGUEIREDO, L. A. de RAZOOK, A. G. CYRILLO, J. N. DOS S. G. |
author_role |
author |
author2 |
ALENCAR, M. M. de FIGUEIREDO, L. A. de RAZOOK, A. G. CYRILLO, J. N. DOS S. G. |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
ANGELINA BOSSI FRAGA, Universidade Federal de Alagoas; MAURICIO MELLO DE ALENCAR, CPPSE; LEOPOLDO ANDRADE DE FIGUEIREDO, Instituto de Zootecnia do Estado de São Paulo; ALEXANDER GEORGE RAZOOK, Instituto de Zootecnia do Estado de São Paulo; JOSLAINE NOELY DOS SANTOS GONÇALVES CYRILLO, Instituto de Zootecnia do Estado de São Paulo. |
dc.contributor.author.fl_str_mv |
FRAGA, A. B. ALENCAR, M. M. de FIGUEIREDO, L. A. de RAZOOK, A. G. CYRILLO, J. N. DOS S. G. |
dc.subject.por.fl_str_mv |
Horn fly counts Genética Genetic correlation Heritability Repeatability |
topic |
Horn fly counts Genética Genetic correlation Heritability Repeatability |
description |
The objective of this study was to evaluate environmental factors that affect infestation of Caracu cattle breed by horn fly (Haematobia irritans) and to estimate genetic parameters for level of infestation. Infestation was evaluated on females from two herds in two consecutive years. Total number of flies on animals (FC) was counted, an infestation score (FS: 1 to 5) was recorded according to the estimated number of flies on animals, and number of parasites in photographs (FF) taken when the animals were evaluated was also counted. On each animal from one to eight observations were taken. A total of 3,836, 2,751 and 3,754 records from 718 animals were obtained for FC, FF and FS, respectively. The incidence of flies was lower during winter and higher during summer, and the thicker the hair coat of the animal the greater the infestation. Heritabilities and repeatabilities were equal to 0.10 and 0.10, 0.08 and 0.12, and 0.06 and 0.08, for FC, FF and FS, respectively. Findings indicate that selection for FC will result in low genetic progress and that animals should be evaluated more than once for selection purposes. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005 2006-01-23 2023-05-08T13:51:06Z 2023-05-08T13:51:06Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Genetics and Molecular Biology, Ribeirão Preto, SP, v. 28, n. 2, p. 242-247, 2005. http://www.alice.cnptia.embrapa.br/alice/handle/doc/47271 https://doi.org/10.1590/S1415-47572005000200011 |
identifier_str_mv |
Genetics and Molecular Biology, Ribeirão Preto, SP, v. 28, n. 2, p. 242-247, 2005. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/47271 https://doi.org/10.1590/S1415-47572005000200011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503544562253824 |