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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
07/12/2004 |
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Data da última atualização: |
27/03/2017 |
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Autoria: |
JENSEN, K. M. V.; JESPERSEN, J. B.; BIRKETT, M. A.; PICKETT, J. A; THOMAS, G.; WADHAMS, L. J.; WOODCOCK, C. M. |
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Afiliação: |
Institute of Agricultural Sciences (Denmark); Biological Chemistry Division (Harpenden, U.K); Laboratory for Behavioural Physiology, Institute for Animal Health (Netherlands). |
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Título: |
Variation in the load of the horn fly, Haematobia irritans, in cattle herds is determined by the presence or absence of individual heifers. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Medical and Veterinary Entomology, v.18, n.3, p.275-280, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
The distribution of horn flies, Haematobia irritans (L.) (Diptera: Muscidae), in herds of Danish Holstein-Friesian cattle was investigated in two studies conducted during two field seasons. In the first study, highly significant differences in fly distribution between the most and the least fly-susceptible heifers were observed. In one herd, the mean difference between the most fly-susceptible and the most fly-resistant heifers was 268 Ha. irritans speciments. The highest ratio between upper and lower mean fly number was 64.1:1, whereas the lowest was 3.1:1. In the second year, it was demonstrated that the heifers kept their rank in fly attraction over time. The trial clearly demonstrated that some heifers were attracting flies, whereas others, even in the same herd, only carried a few. In the second study, heifers were moved in and out of herds in an attempt to manipulate fly loads in the herds. In year I, one herd (herd A) received four fly-resistant heifers from another herd (herd B), resulting in a drop in the mean number of flies, whereas herd B received four fly-susceptible heifers from herd A, resulting in an elevation of the mean number of flies. In year 2, a similar pattern emerged usingherds C and D, and when the cattle were later returned to their original herds, the fly loads returned to their original distribution. The data presented here show unequivocally that, for horn flies, there can be considerable differences in fly loads for individual heifers within the Holstein-Friesian breed. Furthermore, the overall fly load within herds can be manipulated, and can be reversed. Thus, the distribution in the number of flies within a herd appears to depend on the number of fly resistant or fly-susceptible heifers. The possible role of chemical factors emitted by heifers, i. e. volatile semiochemicals, in determining differences in fly loads is discussed, whereby attractants are emitted by fly-susceptible heifers and enable fies to locate their host, and repellents are emitted by fly-resistant heifers such that the flies are actively repelled from the herd. MenosThe distribution of horn flies, Haematobia irritans (L.) (Diptera: Muscidae), in herds of Danish Holstein-Friesian cattle was investigated in two studies conducted during two field seasons. In the first study, highly significant differences in fly distribution between the most and the least fly-susceptible heifers were observed. In one herd, the mean difference between the most fly-susceptible and the most fly-resistant heifers was 268 Ha. irritans speciments. The highest ratio between upper and lower mean fly number was 64.1:1, whereas the lowest was 3.1:1. In the second year, it was demonstrated that the heifers kept their rank in fly attraction over time. The trial clearly demonstrated that some heifers were attracting flies, whereas others, even in the same herd, only carried a few. In the second study, heifers were moved in and out of herds in an attempt to manipulate fly loads in the herds. In year I, one herd (herd A) received four fly-resistant heifers from another herd (herd B), resulting in a drop in the mean number of flies, whereas herd B received four fly-susceptible heifers from herd A, resulting in an elevation of the mean number of flies. In year 2, a similar pattern emerged usingherds C and D, and when the cattle were later returned to their original herds, the fly loads returned to their original distribution. The data presented here show unequivocally that, for horn flies, there can be considerable differences in fly loads for individual heifers within the... Mostrar Tudo |
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Palavras-Chave: |
Dinamarca; Distribuição; Distribution; Horn fly; Mosca de chifre; Ranking; Semiochemical; Substância química. |
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Thesagro: |
Gado; Haematobia Irritans. |
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Thesaurus Nal: |
cattle; Denmark. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03048naa a2200337 a 4500
001 1811390
005 2017-03-27
008 2004 bl --- 0-- u #d
100 1 $aJENSEN, K. M. V.
245 $aVariation in the load of the horn fly, Haematobia irritans, in cattle herds is determined by the presence or absence of individual heifers.
260 $c2004
520 $aThe distribution of horn flies, Haematobia irritans (L.) (Diptera: Muscidae), in herds of Danish Holstein-Friesian cattle was investigated in two studies conducted during two field seasons. In the first study, highly significant differences in fly distribution between the most and the least fly-susceptible heifers were observed. In one herd, the mean difference between the most fly-susceptible and the most fly-resistant heifers was 268 Ha. irritans speciments. The highest ratio between upper and lower mean fly number was 64.1:1, whereas the lowest was 3.1:1. In the second year, it was demonstrated that the heifers kept their rank in fly attraction over time. The trial clearly demonstrated that some heifers were attracting flies, whereas others, even in the same herd, only carried a few. In the second study, heifers were moved in and out of herds in an attempt to manipulate fly loads in the herds. In year I, one herd (herd A) received four fly-resistant heifers from another herd (herd B), resulting in a drop in the mean number of flies, whereas herd B received four fly-susceptible heifers from herd A, resulting in an elevation of the mean number of flies. In year 2, a similar pattern emerged usingherds C and D, and when the cattle were later returned to their original herds, the fly loads returned to their original distribution. The data presented here show unequivocally that, for horn flies, there can be considerable differences in fly loads for individual heifers within the Holstein-Friesian breed. Furthermore, the overall fly load within herds can be manipulated, and can be reversed. Thus, the distribution in the number of flies within a herd appears to depend on the number of fly resistant or fly-susceptible heifers. The possible role of chemical factors emitted by heifers, i. e. volatile semiochemicals, in determining differences in fly loads is discussed, whereby attractants are emitted by fly-susceptible heifers and enable fies to locate their host, and repellents are emitted by fly-resistant heifers such that the flies are actively repelled from the herd.
650 $acattle
650 $aDenmark
650 $aGado
650 $aHaematobia Irritans
653 $aDinamarca
653 $aDistribuição
653 $aDistribution
653 $aHorn fly
653 $aMosca de chifre
653 $aRanking
653 $aSemiochemical
653 $aSubstância química
700 1 $aJESPERSEN, J. B.
700 1 $aBIRKETT, M. A.
700 1 $aPICKETT, J. A
700 1 $aTHOMAS, G.
700 1 $aWADHAMS, L. J.
700 1 $aWOODCOCK, C. M.
773 $tMedical and Veterinary Entomology$gv.18, n.3, p.275-280, 2004.
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Registro original: |
Embrapa Pantanal (CPAP) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Meio-Norte; Embrapa Pesca e Aquicultura; Embrapa Rondônia; Embrapa Roraima. |
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Data corrente: |
07/01/2022 |
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Data da última atualização: |
03/02/2022 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
COLOMBARI FILHO, J. M.; LACERDA, M. C.; CORDEIRO, A. C. C.; MAGALHÃES JÚNIOR, A. M. de; FRAGOSO, D. de B.; BRESEGHELLO, F.; ABREU, G. B.; PEREIRA, J. A.; TORGA, P. P.; RANGEL, P. H. N.; FAGUNDES, P. R. R.; NEVES, P. de C. F.; MOURA NETO, F. P.; CASTRO, A. P. de; ANDRES, A.; NUNES, C. D. M.; FURTINI, I. V.; PETRINI, J. A.; BARRIGOSSI, J. A. F.; MARTINS, J. F. da S.; UTUMI, M. M.; FILIPPI, M. C. C. de; BASSINELLO, P. Z.; BORBA, T. C. de O.; SILVA-LOBO, V. L. |
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Afiliação: |
JOSE MANOEL COLOMBARI FILHO, CNPAF; MABIO CHRISLEY LACERDA, CNPAF; ANTONIO CARLOS CENTENO CORDEIRO, CPAF-RR; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; DANIEL DE BRITO FRAGOSO, CNPASA; FLAVIO BRESEGHELLO, CNPAF; GUILHERME BARBOSA ABREU, CPACP; JOSE ALMEIDA PEREIRA, CPAMN; PAULA PEREIRA TORGA, CNPAF; PAULO HIDEO NAKANO RANGEL, CNPAF; PAULO RICARDO REIS FAGUNDES, CPACT; PERICLES DE CARVALHO FERREIRA NEVES, CNPAF; FRANCISCO PEREIRA MOURA NETO, CNPAF; ADRIANO PEREIRA DE CASTRO, CNPAF; ANDRE ANDRES, CPACT; CLEY DONIZETI MARTINS NUNES, CPACT; ISABELA VOLPI FURTINI, CNPAF; JOSE ALBERTO PETRINI, CPACT; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; JOSE FRANCISCO DA SILVA MARTINS, CPACT; MARLEY MARICO UTUMI, CPAF-RO; MARTA CRISTINA CORSI DE FILIPPI, CNPAF; PRISCILA ZACZUK BASSINELLO, CNPAF; TEREZA CRISTINA DE OLIVEIRA BORBA, CNPAF; VALACIA LEMES DA SILVA LOBO, CNPAF. |
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Título: |
BRS A704: características e desempenho agronômico da nova cultivar de arroz irrigado de ciclo médio. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Santo Antônio de Goiás: Embrapa Arroz e Feijão, 2021. |
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Páginas: |
17 p. |
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Série: |
(Embrapa Arroz e Feijão. Comunicado técnico, 262). |
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ISSN: |
1678-961X |
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Idioma: |
Português |
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Conteúdo: |
A ampliação da base genética é uma das premissas do MelhorArroz, tanto para evitar platôs de ganhos genéticos, quanto para reduzir a vulnerabilidade genética da cultura do arroz a estresses bióticos e abióticos. A BRS A704 foi desenvolvida a partir do cruzamento entre as linhagens CNA 5/3/1-29-B-B-4-B, genitor feminino, e BRA041049, genitor masculino, com objetivo de reunir combinações gênicas favoráveis para resistência genética à brusone, elevado potencial produtivo, tolerância ao acamamento e qualidade de grãos superior, a partir da escolha de genitores de base genética ampla, desenvolvidos de populações de seleção recorrente com múltiplos genitores recombinados via macho esterilidade genética. |
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Palavras-Chave: |
BRS A704. |
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Thesagro: |
Arroz Irrigado; Características Agronômicas; Melhoramento Genético Vegetal; Oryza Sativa. |
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Thesaurus NAL: |
Agronomic traits; New variety; Plant breeding; Rice. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/230096/1/cot-262.pdf
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Marc: |
LEADER 02332nam a2200541 a 4500
001 2138900
005 2022-02-03
008 2021 bl uuuu u0uu1 u #d
022 $a1678-961X
100 1 $aCOLOMBARI FILHO, J. M.
245 $aBRS A704$bcaracterísticas e desempenho agronômico da nova cultivar de arroz irrigado de ciclo médio.$h[electronic resource]
260 $aSanto Antônio de Goiás: Embrapa Arroz e Feijão$c2021
300 $a17 p.
490 $a(Embrapa Arroz e Feijão. Comunicado técnico, 262).
520 $aA ampliação da base genética é uma das premissas do MelhorArroz, tanto para evitar platôs de ganhos genéticos, quanto para reduzir a vulnerabilidade genética da cultura do arroz a estresses bióticos e abióticos. A BRS A704 foi desenvolvida a partir do cruzamento entre as linhagens CNA 5/3/1-29-B-B-4-B, genitor feminino, e BRA041049, genitor masculino, com objetivo de reunir combinações gênicas favoráveis para resistência genética à brusone, elevado potencial produtivo, tolerância ao acamamento e qualidade de grãos superior, a partir da escolha de genitores de base genética ampla, desenvolvidos de populações de seleção recorrente com múltiplos genitores recombinados via macho esterilidade genética.
650 $aAgronomic traits
650 $aNew variety
650 $aPlant breeding
650 $aRice
650 $aArroz Irrigado
650 $aCaracterísticas Agronômicas
650 $aMelhoramento Genético Vegetal
650 $aOryza Sativa
653 $aBRS A704
700 1 $aLACERDA, M. C.
700 1 $aCORDEIRO, A. C. C.
700 1 $aMAGALHÃES JÚNIOR, A. M. de
700 1 $aFRAGOSO, D. de B.
700 1 $aBRESEGHELLO, F.
700 1 $aABREU, G. B.
700 1 $aPEREIRA, J. A.
700 1 $aTORGA, P. P.
700 1 $aRANGEL, P. H. N.
700 1 $aFAGUNDES, P. R. R.
700 1 $aNEVES, P. de C. F.
700 1 $aMOURA NETO, F. P.
700 1 $aCASTRO, A. P. de
700 1 $aANDRES, A.
700 1 $aNUNES, C. D. M.
700 1 $aFURTINI, I. V.
700 1 $aPETRINI, J. A.
700 1 $aBARRIGOSSI, J. A. F.
700 1 $aMARTINS, J. F. da S.
700 1 $aUTUMI, M. M.
700 1 $aFILIPPI, M. C. C. de
700 1 $aBASSINELLO, P. Z.
700 1 $aBORBA, T. C. de O.
700 1 $aSILVA-LOBO, V. L.
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Embrapa Arroz e Feijão (CNPAF) |
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