Genetic analysis of the infestation of females of the Caracu cattle breed by Horn Fly (Haematobia irritans irritans) (L.) (Diptera:Muscidae).

Detalhes bibliográficos
Autor(a) principal: FRAGA, A. B.
Data de Publicação: 2005
Outros Autores: ALENCAR, M. M. de, FIGUEIREDO, L. A. de, RAZOOK, A. G., CYRILLO, J. N. DOS S. G.
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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spelling 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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