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| Acesso ao texto completo restrito à biblioteca da Embrapa Rondônia. Para informações adicionais entre em contato com cpafro.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
11/12/2020 |
Data da última atualização: |
16/12/2020 |
Tipo da produção científica: |
Nota Técnica/Nota Científica |
Autoria: |
CARVALHO, G. A. de; SALMAN, A. K. D.; CRUZ, P. G. da; SOUZA, E. C. de; SILVA, F. R. F. da; SCHMIDT, E. |
Afiliação: |
Giovanna Araújo de Carvalho, Universidade Federal de Rondônia; ANA KARINA DIAS SALMAN, CPAF-RO; PEDRO GOMES DA CRUZ, CPAF-RO; Elaine Coimbra de Souza, Universidade Federal de Rondônia; Francyelle Ruana Faria da Silva, Universidade Federal de Rondônia; Eduardo Schmitt, Universidade Federal de Pelotas. |
Título: |
Technical note: an acoustic method for assessing the respiration rate of free-grazing dairy cattle. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Livestock Science, v. 241, 104270, Nov. 2020. |
ISSN: |
1871-1413 |
DOI: |
https://doi.org/10.1016/j.livsci.2020.104270 |
Idioma: |
Inglês |
Conteúdo: |
The aim of this study was to validate whether acoustic data analysis can be used to assess respiration rate (RR) in dairy cattle under grazing systems. Two validation trials, one with heifers and other with lactating cows, were conducted. The RR derived from acoustic data acquired with an MP3 recorder fitted on the halter was compared to the RR derived from a visual method, counting flank movements. Data were analyzed using correlation test and Willmott's index of agreement (d). There was no significant difference (P>0.05) between RR assessed using the acoustic or visual method, in both heifers and lactating cows. The coefficients of determination (R2) indicated that 92.31% (heifers) and 62.09% (lactating cows) of the variability in the RR derived using the visual assessment method was explained by the RR derived using the acoustic method. The d values were 0.99 (heifers) and 0.98 (lactating cows), which denoted good agreement between the RR derived using the two methods. The acoustic method is non-invasive, allows for the assessment of RR in free-grazing dairy cattle and may replace the current standard of visual counting. |
Palavras-Chave: |
Acoustic data; Amazônia Ocidental; Dados acústicos; Embrapa Rondônia; Porto Velho (RO); Rondônia; Western Amazon. |
Thesagro: |
Campo Experimental; Gado Leiteiro; Medição; Respiração; Sistema de Pastejo. |
Thesaurus Nal: |
Dairy cattle; Demonstration farms; Respiratory rate. |
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
Marc: |
LEADER 02266naa a2200385 a 4500 001 2127997 005 2020-12-16 008 2020 bl uuuu u00u1 u #d 022 $a1871-1413 024 7 $ahttps://doi.org/10.1016/j.livsci.2020.104270$2DOI 100 1 $aCARVALHO, G. A. de 245 $aTechnical note$ban acoustic method for assessing the respiration rate of free-grazing dairy cattle.$h[electronic resource] 260 $c2020 520 $aThe aim of this study was to validate whether acoustic data analysis can be used to assess respiration rate (RR) in dairy cattle under grazing systems. Two validation trials, one with heifers and other with lactating cows, were conducted. The RR derived from acoustic data acquired with an MP3 recorder fitted on the halter was compared to the RR derived from a visual method, counting flank movements. Data were analyzed using correlation test and Willmott's index of agreement (d). There was no significant difference (P>0.05) between RR assessed using the acoustic or visual method, in both heifers and lactating cows. The coefficients of determination (R2) indicated that 92.31% (heifers) and 62.09% (lactating cows) of the variability in the RR derived using the visual assessment method was explained by the RR derived using the acoustic method. The d values were 0.99 (heifers) and 0.98 (lactating cows), which denoted good agreement between the RR derived using the two methods. The acoustic method is non-invasive, allows for the assessment of RR in free-grazing dairy cattle and may replace the current standard of visual counting. 650 $aDairy cattle 650 $aDemonstration farms 650 $aRespiratory rate 650 $aCampo Experimental 650 $aGado Leiteiro 650 $aMedição 650 $aRespiração 650 $aSistema de Pastejo 653 $aAcoustic data 653 $aAmazônia Ocidental 653 $aDados acústicos 653 $aEmbrapa Rondônia 653 $aPorto Velho (RO) 653 $aRondônia 653 $aWestern Amazon 700 1 $aSALMAN, A. K. D. 700 1 $aCRUZ, P. G. da 700 1 $aSOUZA, E. C. de 700 1 $aSILVA, F. R. F. da 700 1 $aSCHMIDT, E. 773 $tLivestock Science$gv. 241, 104270, Nov. 2020.
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Embrapa Rondônia (CPAF-RO) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
11/12/2013 |
Data da última atualização: |
18/03/2015 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SANTOS, J. M. L. dos; MONTEIRO, J. P.; RIBEIRO, W. L. C.; MACEDO, I. T. F.; CAMURÇA-VASCONCELOS, A. L. F.; VIEIRA, L. da S.; BEVILÁQUA, C. M. L. |
Afiliação: |
Jessica Maria Leite dos Santos, Pós-graduação - Universidade Estadual do Ceará (UECe) - Fortaleza, CE, Brazil; JOMAR PATRICIO MONTEIRO, CNPC; Wesley Lyeverton Correia Ribeiro, Pós-graduação - UECe - Fortaleza, CE, Brazil; Iara Tersia Freitas Macedo, UECe - Fortaleza, CE, Brazil; Ana Lourdes Fernandes Camurça-Vasconcelos, Pós-graduação - UECe - Fortaleza, CE, Brazil; LUIZ DA SILVA VIEIRA, CNPC; Claudia Maria Leal Bevilaqua, Pós-graduação - UECe - Fortaleza, CE, Brazil. |
Título: |
Identification and quantification of benzimidazole resistance polymorphisms in Haemonchus contortus isolated in Northeastern Brazil. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Veterinary Parasitology, v. 199, n. 3/4, p. 160-164, Jan. 2014. |
DOI: |
http://dx.doi.org/10.1016/j.vetpar.2013.11.006 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Haemonchus contortus is the most prevalent nematode in Brazil. The objective of this study was to select 6 populations of H. contortus of known or suspected benzimidazole resistance status and characterize these using quantitative real-time polymerase chain reaction (qPCR) for single nucleotide polymorphisms (SNPs) F200Y, F167Y and E198A in the ?-tubulin isotype 1 gene. qPCR was performed using DNA from a pool of 10 adult male H. contortus from a single animal per farm. Faecal egg count reduction test (FECRT) and egg hatch test (EHT) were used to determine the resistance status. Samples were obtained from 6 farms located in 5 counties in the Ceará State: Tauá, Boa Viagem, Quixadá, Santa Quitéria and Solonópole. The inbred-susceptible-Edinburgh (ISE) isolate was used as reference for comparative purposes in the qPCR. Benzimidazole resistance was detected by FECRT on all farms with efficacy values ranging from 0 to 51%. EC50 values as determined by EHT were all above 1.49 ug/ml. High frequencies of the resistant SNPs F200Y and F167Y alleles were detected but no resistance was detected at SNP E198A. Our results suggest that the SNPs F167Y and F200Y are both important for benzimidazole resistance in the studied populations. |
Palavras-Chave: |
Gastrointestinal diseases; Helmintose; Nematóide gastrintestinal; PCR; QPCR; Quantitative real-time PCR; Resistance to anthelmintics; Resistência anti-helmíntica. |
Thesagro: |
Anti-helmíntico; Haemonchus contortus; Nematóide; Ovino. |
Thesaurus NAL: |
benzimidazole; Sheep. |
Categoria do assunto: |
H Saúde e Patologia |
Marc: |
LEADER 02444naa a2200373 a 4500 001 1973510 005 2015-03-18 008 2014 bl uuuu u00u1 u #d 024 7 $ahttp://dx.doi.org/10.1016/j.vetpar.2013.11.006$2DOI 100 1 $aSANTOS, J. M. L. dos 245 $aIdentification and quantification of benzimidazole resistance polymorphisms in Haemonchus contortus isolated in Northeastern Brazil.$h[electronic resource] 260 $c2014 520 $aAbstract: Haemonchus contortus is the most prevalent nematode in Brazil. The objective of this study was to select 6 populations of H. contortus of known or suspected benzimidazole resistance status and characterize these using quantitative real-time polymerase chain reaction (qPCR) for single nucleotide polymorphisms (SNPs) F200Y, F167Y and E198A in the ?-tubulin isotype 1 gene. qPCR was performed using DNA from a pool of 10 adult male H. contortus from a single animal per farm. Faecal egg count reduction test (FECRT) and egg hatch test (EHT) were used to determine the resistance status. Samples were obtained from 6 farms located in 5 counties in the Ceará State: Tauá, Boa Viagem, Quixadá, Santa Quitéria and Solonópole. The inbred-susceptible-Edinburgh (ISE) isolate was used as reference for comparative purposes in the qPCR. Benzimidazole resistance was detected by FECRT on all farms with efficacy values ranging from 0 to 51%. EC50 values as determined by EHT were all above 1.49 ug/ml. High frequencies of the resistant SNPs F200Y and F167Y alleles were detected but no resistance was detected at SNP E198A. Our results suggest that the SNPs F167Y and F200Y are both important for benzimidazole resistance in the studied populations. 650 $abenzimidazole 650 $aSheep 650 $aAnti-helmíntico 650 $aHaemonchus contortus 650 $aNematóide 650 $aOvino 653 $aGastrointestinal diseases 653 $aHelmintose 653 $aNematóide gastrintestinal 653 $aPCR 653 $aQPCR 653 $aQuantitative real-time PCR 653 $aResistance to anthelmintics 653 $aResistência anti-helmíntica 700 1 $aMONTEIRO, J. P. 700 1 $aRIBEIRO, W. L. C. 700 1 $aMACEDO, I. T. F. 700 1 $aCAMURÇA-VASCONCELOS, A. L. F. 700 1 $aVIEIRA, L. da S. 700 1 $aBEVILÁQUA, C. M. L. 773 $tVeterinary Parasitology$gv. 199, n. 3/4, p. 160-164, Jan. 2014.
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