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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
17/12/2018 |
Data da última atualização: |
22/01/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MIRABALLESA, C.; SANCHEZ, J.; BARROS, A. T. M. de; HITATEGUYB, S.; MARENOB, P.; SAPORITIA, T.; RIET-CORREA, F. |
Afiliação: |
Cecilia Miraballesa, National Institute of Agriculture Research - INIA; Javier Sanchez, University of Prince Edwards Island; ANTONIO THADEU MEDEIROS DE BARROS, CNPGC; Sebastian Hitateguyb, Veterinary Faculty, Republic University - UDELAR; Pablo Morenob, Veterinary Faculty, Republic University - UDELAR; Tatiana Saporitia, National Institute of Agriculture Research - INIA; Franklin Riet-Correa, National Institute of Agriculture Research - INIA. |
Título: |
Influence of selective treatment of bulls on the infestation of Haematobia irritans on untreated cows. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Veterinary Parasitology, v. 260, p. 58-62, 2018 |
Idioma: |
Inglês |
Conteúdo: |
The distribution of Hematobia irritans is not homogeneous in cattle populations. Generally, between 15% and 30% of bovines carry more than 50% of the flies, and higher infestations occur in bulls. In this study, the effect of treating the bulls with ear tags containing 40% diazinon on the infestation of flies on the herd during the breeding season was evaluated. Four groups of cattle were made, each containing one bull and 35 Braford cows. Groups 1 and 2 were on pastures in highlands. Groups 3 and 4 were on pastures in lowlands. At the beginning of the trial, each bull from Groups 1 and 3 was treated with an ear tag. Bulls from Groups 2 and 4 remained untreated. Weekly, for 10 weeks, horn flies were counted from each bull and 15 cows from each group. A repeated measures linear mixed model was used with cows as random effects. The number of horn flies in the treated groups was lower than that in the untreated group, suggesting that selective treatment of bulls could be an effective strategy to control horn flies on the herd. The number of flies was higher in the lowland than that in the highland groups, suggesting an effect of the environment on horn fly infestations. In addition, we estimated the cow level predictions from the model to estimate the cow effect on fly counts, and we compared those values with the observed weekly quartiles for each group. Fly-susceptible cows were defined as those for which the infestation of flies appeared in the upper quartile more than 50% of the weeks and in the lower quartile less than 20% of the weeks. In contrast, a fly-resistant cow was defined as one for which the fly counts appeared in the lower quartile more than 50% of the weeks and in the upper quartile less than 20% of the weeks. In all, 8.3% of the cows were susceptible and 15% were resistant. These results may be used to selectively treat bulls or to treat the bulls and the most susceptible cows during the breeding season. MenosThe distribution of Hematobia irritans is not homogeneous in cattle populations. Generally, between 15% and 30% of bovines carry more than 50% of the flies, and higher infestations occur in bulls. In this study, the effect of treating the bulls with ear tags containing 40% diazinon on the infestation of flies on the herd during the breeding season was evaluated. Four groups of cattle were made, each containing one bull and 35 Braford cows. Groups 1 and 2 were on pastures in highlands. Groups 3 and 4 were on pastures in lowlands. At the beginning of the trial, each bull from Groups 1 and 3 was treated with an ear tag. Bulls from Groups 2 and 4 remained untreated. Weekly, for 10 weeks, horn flies were counted from each bull and 15 cows from each group. A repeated measures linear mixed model was used with cows as random effects. The number of horn flies in the treated groups was lower than that in the untreated group, suggesting that selective treatment of bulls could be an effective strategy to control horn flies on the herd. The number of flies was higher in the lowland than that in the highland groups, suggesting an effect of the environment on horn fly infestations. In addition, we estimated the cow level predictions from the model to estimate the cow effect on fly counts, and we compared those values with the observed weekly quartiles for each group. Fly-susceptible cows were defined as those for which the infestation of flies appeared in the upper quartile more than 50% o... Mostrar Tudo |
Palavras-Chave: |
BLUPs Control; Resistant cows; Susceptible cows. |
Categoria do assunto: |
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Marc: |
LEADER 02629naa a2200229 a 4500 001 2101720 005 2019-01-22 008 2018 bl uuuu u00u1 u #d 100 1 $aMIRABALLESA, C. 245 $aInfluence of selective treatment of bulls on the infestation of Haematobia irritans on untreated cows.$h[electronic resource] 260 $c2018 520 $aThe distribution of Hematobia irritans is not homogeneous in cattle populations. Generally, between 15% and 30% of bovines carry more than 50% of the flies, and higher infestations occur in bulls. In this study, the effect of treating the bulls with ear tags containing 40% diazinon on the infestation of flies on the herd during the breeding season was evaluated. Four groups of cattle were made, each containing one bull and 35 Braford cows. Groups 1 and 2 were on pastures in highlands. Groups 3 and 4 were on pastures in lowlands. At the beginning of the trial, each bull from Groups 1 and 3 was treated with an ear tag. Bulls from Groups 2 and 4 remained untreated. Weekly, for 10 weeks, horn flies were counted from each bull and 15 cows from each group. A repeated measures linear mixed model was used with cows as random effects. The number of horn flies in the treated groups was lower than that in the untreated group, suggesting that selective treatment of bulls could be an effective strategy to control horn flies on the herd. The number of flies was higher in the lowland than that in the highland groups, suggesting an effect of the environment on horn fly infestations. In addition, we estimated the cow level predictions from the model to estimate the cow effect on fly counts, and we compared those values with the observed weekly quartiles for each group. Fly-susceptible cows were defined as those for which the infestation of flies appeared in the upper quartile more than 50% of the weeks and in the lower quartile less than 20% of the weeks. In contrast, a fly-resistant cow was defined as one for which the fly counts appeared in the lower quartile more than 50% of the weeks and in the upper quartile less than 20% of the weeks. In all, 8.3% of the cows were susceptible and 15% were resistant. These results may be used to selectively treat bulls or to treat the bulls and the most susceptible cows during the breeding season. 653 $aBLUPs Control 653 $aResistant cows 653 $aSusceptible cows 700 1 $aSANCHEZ, J. 700 1 $aBARROS, A. T. M. de 700 1 $aHITATEGUYB, S. 700 1 $aMARENOB, P. 700 1 $aSAPORITIA, T. 700 1 $aRIET-CORREA, F. 773 $tVeterinary Parasitology$gv. 260, p. 58-62, 2018
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
12/09/2003 |
Data da última atualização: |
28/04/2006 |
Autoria: |
SOUZA, P. I. M.; MOREIRA, C. T.; FARIAS NETO, A. L.; ABUD, S.; KIIHL, R. S. de S.; ALMEIDA, L. A. de; SILVA, J. F. V.; YORINORI, J. T.; ASSUNÇÃO, M. S.; MONTEIRO, P. M. F. O.; NUNES JUNIOR, J.; GUERZONI, R. A.; ARANTES, N. E. |
Título: |
Comportamento e descrição da cultivar de soja BRS Marina em Goiás e no Distrito Federal. |
Ano de publicação: |
2003 |
Fonte/Imprenta: |
In: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 25., 2003, Uberaba. Resumos... Londrina: Embrapa Soja: EPAMIG: Fundação Triângulo, 2003. |
Páginas: |
p. 108-109. |
Série: |
(Embrapa Soja. Documentos, 209). |
Idioma: |
Português |
Notas: |
Organizado por Odilon Ferreira Saraiva, Regina Maria Villas Boas de Campos Leite. |
Conteúdo: |
A cultivar 'BRS Marina' originou-se do cruzamento de VERNAL X HARTWIG pelo método genealógico modificado e está sendo indicada para o plantio em Goiás e Distrito Federal. Foi testada sob a sigla BRA 95-30080. Apresenta hábito de crescimento determinado e ciclo tardio, em torno de 142 dias. Tem boa resistência ao acamamento e à deiscência de vagem. A cor das flores é branca e a pubescência marrom. As sementes são de cor amarelo-brilhante e hilo de cor preto. O peso de 100 grãos é de 18 gramas. É resistente ao cancro-da-haste e tolerante ao oídio. Em vários testes de VCU (Valor de Cultivo e Uso), durante dois anos (1999/2000 e 2000/2001), em pelo menos 16 locais em Goiás e no Distrito Federal, a cultivar 'Marina' alcançou produtividade média de 3315 kg/ha, igualando-se estatisticamente, à testemunha M-SOY 8800 e sendo superior às testemunhas ´DM 339´ e ´Uirapuru´ em 10% e 12%, respectivamente. As melhores produtividades foram obtidas com semeaduras no mês de novembro e população em torno de 350 mil plantas/ha. Essa cultivar destaca-se pela estabilidade e produtividade, bem como pela resistência aos nematóides-de-galha Meloidogyne javanica e Meloidogyne incognita.
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Categoria do assunto: |
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Marc: |
LEADER 02247naa a2200301 a 4500 001 1465013 005 2006-04-28 008 2003 bl uuuu u00u1 u #d 100 1 $aSOUZA, P. I. M. 245 $aComportamento e descrição da cultivar de soja BRS Marina em Goiás e no Distrito Federal. 260 $c2003 300 $ap. 108-109. 490 $a(Embrapa Soja. Documentos, 209). 500 $aOrganizado por Odilon Ferreira Saraiva, Regina Maria Villas Boas de Campos Leite. 520 $aA cultivar 'BRS Marina' originou-se do cruzamento de VERNAL X HARTWIG pelo método genealógico modificado e está sendo indicada para o plantio em Goiás e Distrito Federal. Foi testada sob a sigla BRA 95-30080. Apresenta hábito de crescimento determinado e ciclo tardio, em torno de 142 dias. Tem boa resistência ao acamamento e à deiscência de vagem. A cor das flores é branca e a pubescência marrom. As sementes são de cor amarelo-brilhante e hilo de cor preto. O peso de 100 grãos é de 18 gramas. É resistente ao cancro-da-haste e tolerante ao oídio. Em vários testes de VCU (Valor de Cultivo e Uso), durante dois anos (1999/2000 e 2000/2001), em pelo menos 16 locais em Goiás e no Distrito Federal, a cultivar 'Marina' alcançou produtividade média de 3315 kg/ha, igualando-se estatisticamente, à testemunha M-SOY 8800 e sendo superior às testemunhas ´DM 339´ e ´Uirapuru´ em 10% e 12%, respectivamente. As melhores produtividades foram obtidas com semeaduras no mês de novembro e população em torno de 350 mil plantas/ha. Essa cultivar destaca-se pela estabilidade e produtividade, bem como pela resistência aos nematóides-de-galha Meloidogyne javanica e Meloidogyne incognita. 700 1 $aMOREIRA, C. T. 700 1 $aFARIAS NETO, A. L. 700 1 $aABUD, S. 700 1 $aKIIHL, R. S. de S. 700 1 $aALMEIDA, L. A. de 700 1 $aSILVA, J. F. V. 700 1 $aYORINORI, J. T. 700 1 $aASSUNÇÃO, M. S. 700 1 $aMONTEIRO, P. M. F. O. 700 1 $aNUNES JUNIOR, J. 700 1 $aGUERZONI, R. A. 700 1 $aARANTES, N. E. 773 $tIn: REUNIÃO DE PESQUISA DE SOJA DA REGIÃO CENTRAL DO BRASIL, 25., 2003, Uberaba. Resumos... Londrina: Embrapa Soja: EPAMIG: Fundação Triângulo, 2003.
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