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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
04/01/2012 |
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Data da última atualização: |
12/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CAMPOS, M. M.; BORGES, A. L. C. C.; LOPES, F. C. F.; PANCOTI, C. G.; SILVA, R. R. e. |
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Afiliação: |
MARIANA MAGALHAES CAMPOS, CNPGL; A. L. C. C. BORGES, UFMG; FERNANDO CESAR FERRAZ LOPES, CNPGL; C. G. PANCOTI, UFMG; R. REIS E SILVA, UFMG. |
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Título: |
Degradabilidade in situ da cana-de-açúcar tratada ou não com óxido de cálcio, em novilhas leiteiras Holandês x Gir. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, v. 63, n. 6, p. 1487-1492, 2011. |
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DOI: |
https://doi.org/10.1590/S0102-09352011000600028 |
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Idioma: |
Português |
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Conteúdo: |
RESUMO - Avaliou-se a degradabilidade in situ da cana-de-açúcar in natura ou tratada por 24h com óxido de cálcio em diferentes porcentagens de inclusão na matéria natural da dieta, 0,0; 0,5; 1,0 e 2,0%, no rúmen de cinco novilhas Holandês x Gir. Os parâmetros de degradação ruminal da matéria seca (MS), matéria orgânica (MO), fibra em detergente neutro (FDN) e fibra em detergente ácido (FDA) foram estimados ajustando modelo não linear aos dados de degradabilidade, sendo os parâmetros obtidos utilizados em análises de regressão linear e quadrática realizadas em função da inclusão do óxido de cálcio nas dietas. As degradabilidades potencial e efetiva e as taxas de degradação da MS e da MO aumentaram linearmente com o aumento de inclusão de CaO. O aumento da porcentagem de inclusão de CaO em dietas à base de cana-de-açúcar aumentou linearmente a degradabilidade in situ da MS e da MO e não alterou a degradabilidade in situ das frações fibrosas. ABSTRACT - In situ degradability of sugarcane in natura or added to different levels of calcium oxide (CaO) in fed diet, 0.0; 0.5; 1.0 and 2.0% for 24 h in five Holstein x Gyr heifers, fitted with a rumen cannula.The parameters of rumen degradation of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were estimated by adjusting non-linear model to data degradation, and used the parameters obtained in regression analysis, linear and quadratic performed according to the level of inclusion of calcium oxide in diets.The potential and effective degradability, as well as the degradation rates of DM and OM were lineraly enhanced with the increasing of the CaO levels in diet. The increasing levels of CaO in sugarcane diets offered to Holstein x Gyr dairy heifers lead to a linear enhancement of in situ degradability of DM and OM, but does not affect the in situ degradability of fiber fractions. MenosRESUMO - Avaliou-se a degradabilidade in situ da cana-de-açúcar in natura ou tratada por 24h com óxido de cálcio em diferentes porcentagens de inclusão na matéria natural da dieta, 0,0; 0,5; 1,0 e 2,0%, no rúmen de cinco novilhas Holandês x Gir. Os parâmetros de degradação ruminal da matéria seca (MS), matéria orgânica (MO), fibra em detergente neutro (FDN) e fibra em detergente ácido (FDA) foram estimados ajustando modelo não linear aos dados de degradabilidade, sendo os parâmetros obtidos utilizados em análises de regressão linear e quadrática realizadas em função da inclusão do óxido de cálcio nas dietas. As degradabilidades potencial e efetiva e as taxas de degradação da MS e da MO aumentaram linearmente com o aumento de inclusão de CaO. O aumento da porcentagem de inclusão de CaO em dietas à base de cana-de-açúcar aumentou linearmente a degradabilidade in situ da MS e da MO e não alterou a degradabilidade in situ das frações fibrosas. ABSTRACT - In situ degradability of sugarcane in natura or added to different levels of calcium oxide (CaO) in fed diet, 0.0; 0.5; 1.0 and 2.0% for 24 h in five Holstein x Gyr heifers, fitted with a rumen cannula.The parameters of rumen degradation of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were estimated by adjusting non-linear model to data degradation, and used the parameters obtained in regression analysis, linear and quadratic performed according to the level of inclusion of c... Mostrar Tudo |
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Palavras-Chave: |
Bovinos. |
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Thesagro: |
Álcali; Hidrolise. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/51680/1/Artigo-meta-2011-ArqBrasMVZ-Mariana.pdf
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Marc: |
LEADER 02666naa a2200217 a 4500
001 1911613
005 2022-08-12
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0102-09352011000600028$2DOI
100 1 $aCAMPOS, M. M.
245 $aDegradabilidade in situ da cana-de-açúcar tratada ou não com óxido de cálcio, em novilhas leiteiras Holandês x Gir.$h[electronic resource]
260 $c2011
520 $aRESUMO - Avaliou-se a degradabilidade in situ da cana-de-açúcar in natura ou tratada por 24h com óxido de cálcio em diferentes porcentagens de inclusão na matéria natural da dieta, 0,0; 0,5; 1,0 e 2,0%, no rúmen de cinco novilhas Holandês x Gir. Os parâmetros de degradação ruminal da matéria seca (MS), matéria orgânica (MO), fibra em detergente neutro (FDN) e fibra em detergente ácido (FDA) foram estimados ajustando modelo não linear aos dados de degradabilidade, sendo os parâmetros obtidos utilizados em análises de regressão linear e quadrática realizadas em função da inclusão do óxido de cálcio nas dietas. As degradabilidades potencial e efetiva e as taxas de degradação da MS e da MO aumentaram linearmente com o aumento de inclusão de CaO. O aumento da porcentagem de inclusão de CaO em dietas à base de cana-de-açúcar aumentou linearmente a degradabilidade in situ da MS e da MO e não alterou a degradabilidade in situ das frações fibrosas. ABSTRACT - In situ degradability of sugarcane in natura or added to different levels of calcium oxide (CaO) in fed diet, 0.0; 0.5; 1.0 and 2.0% for 24 h in five Holstein x Gyr heifers, fitted with a rumen cannula.The parameters of rumen degradation of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were estimated by adjusting non-linear model to data degradation, and used the parameters obtained in regression analysis, linear and quadratic performed according to the level of inclusion of calcium oxide in diets.The potential and effective degradability, as well as the degradation rates of DM and OM were lineraly enhanced with the increasing of the CaO levels in diet. The increasing levels of CaO in sugarcane diets offered to Holstein x Gyr dairy heifers lead to a linear enhancement of in situ degradability of DM and OM, but does not affect the in situ degradability of fiber fractions.
650 $aÁlcali
650 $aHidrolise
653 $aBovinos
700 1 $aBORGES, A. L. C. C.
700 1 $aLOPES, F. C. F.
700 1 $aPANCOTI, C. G.
700 1 $aSILVA, R. R. e
773 $tArquivo Brasileiro de Medicina Veterinária e Zootecnia$gv. 63, n. 6, p. 1487-1492, 2011.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
08/11/2022 |
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Data da última atualização: |
30/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
NOVATO, T. P.; MILHOMEM, M. N.; MARCHESINI, P. B. C.; COUTINHO, A. L.; SILVA, I. S.; PERINOTTO, W. M. de S.; PRATA, M. C. de A.; FERREIRA, L. L.; LOPES, W. D. Z.; COSTA-JÚNIOR, L. M.; MONTEIRO, C. M. de O. |
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Afiliação: |
TATIANE PINHEIRO NOVATO, Universidade Federal Rural do Rio de Janeiro; MARLISE NEVES MILHOMEM, Universidade Federal do Maranhão; PAULA BARROSO CRUZ MARCHESINI, Universidade Federal de Goiás; ANA LÚCIA COUTINHO, Universidade Federal de Goiás; ISABELA SANTOS SILVA, Universidade Federal de Goiás; WENDELL MARCELO DE SOUZA PERINOTTO, Universidade Federal do Recôncavo da Bahia; MARCIA CRISTINA DE AZEVEDO PRATA, CNPGL; LORENA LOPES FERREIRA, Universidade Federal de Minas Gerais; WELBER DANIEL ZANETTI LOPES, Universidade Federal de Goiás; LÍVIO MARTINS COSTA-JÚNIOR, Universidade Federal do Maranhão; CAIO MARCIO DE OLIVEIRA MONTEIRO, Universidade Federal de Goiás. |
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Título: |
Acaricidal activity of carvacrol and thymol on acaricide-resistant Rhipicephalus microplus (Acari: Ixodidae) populations and combination with cypermethrin: is there cross-resistance and synergism? |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Veterinary Parasitology, v. 310, 109787, 2022. |
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DOI: |
https://doi.org/10.1016/j.vetpar.2022.109787 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated the acaricidal activity of thymol and carvacrol on Rhipicephalus microplus populations with different resistance profiles and investigated the synergistic effect of combinations of these monoterpenes with cypermethrin. The adult immersion test (AIT) was used to characterize the susceptibility of tick populations (45 field populations) to synthetic acaricides: deltamethrin, amitraz and chlorfenvinphos. The larval packet test (LPT) was used to determine the LC50 values for thymol (25 tick populations) and carvacrol (20 tick populations). The susceptible strain Porto Alegre (POA) was used as a reference for calculating the resistance ratio (RR). Subsequently, larval immersion tests (LIT) were performed with combinations of cypermethrin with thymol or carvacrol to assess a synergistic effect. In the AIT, deltamethrin showed efficacy > 90% in one (2.2%) population tested (mean: 12.1 and 11.1 for populations 1?25 and 26?40, respectively), whereas amitraz and chlorfenvinphos showed efficacy > 90% for two (4.4%) populations (mean: 61.3 and 47.3 for populations 1-25 and 26-40, respectively) and eight (17.7%) populations (mean: 69.7 and 59.7 for populations 1?25 and 26?40, respectively). In the LPT, the LC50 values for thymol and carvacrol varied from 0.67 to 2.12 mg/mL and 0.55?3.21 mg/mL, with an average LC50 for populations of 1.49 and 1.75 mg/mL, respectively. For thymol, no resistance was observed in any of the populations, values of RR50 > 1.5. There was no correlation between the LC50 values for thymol and the efficacy of the chemical acaricides tested. Regarding carvacrol, for only one tick population had the value of RR50 > 1.5, indicating an incipient resistance. No correlation was observed between the LC50 values for carvacrol and the efficacy of tested acaricides. The combination of thymol and carvacrol with cypermethrin showed a synergistic effect in the resistant population (Jaguar- thymol 4.19 and carvacrol 3.67), and no synergistic interaction were showed in the susceptible population. Answering the questions we conclude that: 1 - The comparison between the LC50 values for thymol and carvacrol in field populations and the susceptible strain POA suggests the absence of cross-resistance (ticks and terpenes), and the differences between the LC50 values for thymol and carvacrol in the different R. microplus populations are inherent to the characteristics of each population tested; 2 - the combination of thymol or carvacrol with cypermethrin showed a synergistic effect with different activity according to the population of ticks. MenosThis study evaluated the acaricidal activity of thymol and carvacrol on Rhipicephalus microplus populations with different resistance profiles and investigated the synergistic effect of combinations of these monoterpenes with cypermethrin. The adult immersion test (AIT) was used to characterize the susceptibility of tick populations (45 field populations) to synthetic acaricides: deltamethrin, amitraz and chlorfenvinphos. The larval packet test (LPT) was used to determine the LC50 values for thymol (25 tick populations) and carvacrol (20 tick populations). The susceptible strain Porto Alegre (POA) was used as a reference for calculating the resistance ratio (RR). Subsequently, larval immersion tests (LIT) were performed with combinations of cypermethrin with thymol or carvacrol to assess a synergistic effect. In the AIT, deltamethrin showed efficacy > 90% in one (2.2%) population tested (mean: 12.1 and 11.1 for populations 1?25 and 26?40, respectively), whereas amitraz and chlorfenvinphos showed efficacy > 90% for two (4.4%) populations (mean: 61.3 and 47.3 for populations 1-25 and 26-40, respectively) and eight (17.7%) populations (mean: 69.7 and 59.7 for populations 1?25 and 26?40, respectively). In the LPT, the LC50 values for thymol and carvacrol varied from 0.67 to 2.12 mg/mL and 0.55?3.21 mg/mL, with an average LC50 for populations of 1.49 and 1.75 mg/mL, respectively. For thymol, no resistance was observed in any of the populations, values of RR50 > 1.5. There was no ... Mostrar Tudo |
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Palavras-Chave: |
Cipermetrina; Clorfenvinfos. |
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Thesagro: |
Acaricida; Bovino; Carrapato. |
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Thesaurus NAL: |
Amitraz. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 03661naa a2200325 a 4500
001 2148100
005 2022-11-30
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.vetpar.2022.109787$2DOI
100 1 $aNOVATO, T. P.
245 $aAcaricidal activity of carvacrol and thymol on acaricide-resistant Rhipicephalus microplus (Acari$bIxodidae) populations and combination with cypermethrin: is there cross-resistance and synergism?$h[electronic resource]
260 $c2022
520 $aThis study evaluated the acaricidal activity of thymol and carvacrol on Rhipicephalus microplus populations with different resistance profiles and investigated the synergistic effect of combinations of these monoterpenes with cypermethrin. The adult immersion test (AIT) was used to characterize the susceptibility of tick populations (45 field populations) to synthetic acaricides: deltamethrin, amitraz and chlorfenvinphos. The larval packet test (LPT) was used to determine the LC50 values for thymol (25 tick populations) and carvacrol (20 tick populations). The susceptible strain Porto Alegre (POA) was used as a reference for calculating the resistance ratio (RR). Subsequently, larval immersion tests (LIT) were performed with combinations of cypermethrin with thymol or carvacrol to assess a synergistic effect. In the AIT, deltamethrin showed efficacy > 90% in one (2.2%) population tested (mean: 12.1 and 11.1 for populations 1?25 and 26?40, respectively), whereas amitraz and chlorfenvinphos showed efficacy > 90% for two (4.4%) populations (mean: 61.3 and 47.3 for populations 1-25 and 26-40, respectively) and eight (17.7%) populations (mean: 69.7 and 59.7 for populations 1?25 and 26?40, respectively). In the LPT, the LC50 values for thymol and carvacrol varied from 0.67 to 2.12 mg/mL and 0.55?3.21 mg/mL, with an average LC50 for populations of 1.49 and 1.75 mg/mL, respectively. For thymol, no resistance was observed in any of the populations, values of RR50 > 1.5. There was no correlation between the LC50 values for thymol and the efficacy of the chemical acaricides tested. Regarding carvacrol, for only one tick population had the value of RR50 > 1.5, indicating an incipient resistance. No correlation was observed between the LC50 values for carvacrol and the efficacy of tested acaricides. The combination of thymol and carvacrol with cypermethrin showed a synergistic effect in the resistant population (Jaguar- thymol 4.19 and carvacrol 3.67), and no synergistic interaction were showed in the susceptible population. Answering the questions we conclude that: 1 - The comparison between the LC50 values for thymol and carvacrol in field populations and the susceptible strain POA suggests the absence of cross-resistance (ticks and terpenes), and the differences between the LC50 values for thymol and carvacrol in the different R. microplus populations are inherent to the characteristics of each population tested; 2 - the combination of thymol or carvacrol with cypermethrin showed a synergistic effect with different activity according to the population of ticks.
650 $aAmitraz
650 $aAcaricida
650 $aBovino
650 $aCarrapato
653 $aCipermetrina
653 $aClorfenvinfos
700 1 $aMILHOMEM, M. N.
700 1 $aMARCHESINI, P. B. C.
700 1 $aCOUTINHO, A. L.
700 1 $aSILVA, I. S.
700 1 $aPERINOTTO, W. M. de S.
700 1 $aPRATA, M. C. de A.
700 1 $aFERREIRA, L. L.
700 1 $aLOPES, W. D. Z.
700 1 $aCOSTA-JÚNIOR, L. M.
700 1 $aMONTEIRO, C. M. de O.
773 $tVeterinary Parasitology$gv. 310, 109787, 2022.
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