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| Acceso al texto completo restringido a Biblioteca INIA Treinta y Tres. Por información adicional contacte bibliott@inia.org.uy. |
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Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
14/09/2017 |
Actualizado : |
13/09/2018 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
VIKRAM, A.; ROVIRA, P.J.; AGGA, G.E.; ARTHUR, T.M.; BOSILEVAC, J.M.; WHEELER, T.L.; MORLEY, P.S.; BELK, K.E.; SCHMIDT, J.W. |
Afiliación : |
AMIT VIKRAM, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE.; PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. Department of Animal Sciences Colorado State University, CO, US.; GETHYM E. AGGA, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE.; TERRANCE M. ARTHUR, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE.; JOSEPH M. BOSILEVAC, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE.; TOMMY L. WHEELER, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE.; PAUL S. MORLEY, Department of Animal Sciences Colorado State University, CO, US. Department of Clinical Sciences, College of Veterinary Medicine, Colorado State University, CO, US.; KEITH E. BELK, Department of Animal Sciences Colorado State University, CO, US.; JOHN W. SCHMIDT, U.S. Department of Agriculture, Agricultural Research Service, U.S. Meat Animal Research Center, NE. Department of Animal Sciences Colorado State University, CO, US. |
Título : |
Impact of "Raised Without Antibiotics" beef cattle production practices on occurrences of antimicrobial resistance. |
Fecha de publicación : |
2017 |
Fuente / Imprenta : |
Applied and Environmental Microbiology, 2017, v. 83, no. 22, e01682-17. |
DOI : |
10.1128/AEM.01682-17 |
Idioma : |
Inglés |
Notas : |
Article history: Accepted manuscript posted online 8 September 2017// published in november 2017. |
Contenido : |
The specific antimicrobial resistance (AMR) decreases that can be expected from reducing antimicrobial (AM) use in United States (US) beef production have not been defined. To address this data gap, feces were recovered from 36 lots of ?raised without antibiotics? (RWA) and 36 lots of ?conventional? (CONV) beef cattle. Samples (N = 719) were collected during harvest and distributed over a year. AMR was assessed by: i) culture of six AM-resistant bacteria (ARB); ii) qPCR for 10 AMR genes (ARGs); iii) an qPCR array of 84 ARGs; and iv) metagenomic sequencing. Generally, AMR levels were similar, but some were higher in CONV. The prevalence of third-generation cephalosporin-resistant (3GCr) Escherichia coli was marginally different between production systems (47.5 % CONV, 34.8% RWA, P = 0.04), but the seasonal effect (92.8% summer, 48.3% winter, P < 0.01) was greater. Erythromycin-resistant (ERYr) Enterococcus spp. concentrations significantly differed between production systems (CONV = 1.91 log10 CFU/g, RWA = 0.73 log10 CFU/g, P < 0.01). Levels of aadA1, ant(6)-I, blaACI, erm(A), erm(B), erm(C), erm(F), erm(Q), tet(A), tet(B), tet(M), and tet(X) ARGs were higher (P < 0.05) in CONV. Aggregate abundances of all 43 ARGs detected by metagenomic sequencing and the aggregate abundances of ARGs in the aminoglycoside, ?-lactam, macrolide-lincosamide-streptogramin B (MLSB), and tetracycline AM classes did not differ (log2 fold change < 1.0) between CONV and RWA. These results suggest that further reductions of AM use in US beef cattle production may not yield significant AMR reductions beyond MLSB and tetracycline resistance. MenosThe specific antimicrobial resistance (AMR) decreases that can be expected from reducing antimicrobial (AM) use in United States (US) beef production have not been defined. To address this data gap, feces were recovered from 36 lots of ?raised without antibiotics? (RWA) and 36 lots of ?conventional? (CONV) beef cattle. Samples (N = 719) were collected during harvest and distributed over a year. AMR was assessed by: i) culture of six AM-resistant bacteria (ARB); ii) qPCR for 10 AMR genes (ARGs); iii) an qPCR array of 84 ARGs; and iv) metagenomic sequencing. Generally, AMR levels were similar, but some were higher in CONV. The prevalence of third-generation cephalosporin-resistant (3GCr) Escherichia coli was marginally different between production systems (47.5 % CONV, 34.8% RWA, P = 0.04), but the seasonal effect (92.8% summer, 48.3% winter, P < 0.01) was greater. Erythromycin-resistant (ERYr) Enterococcus spp. concentrations significantly differed between production systems (CONV = 1.91 log10 CFU/g, RWA = 0.73 log10 CFU/g, P < 0.01). Levels of aadA1, ant(6)-I, blaACI, erm(A), erm(B), erm(C), erm(F), erm(Q), tet(A), tet(B), tet(M), and tet(X) ARGs were higher (P < 0.05) in CONV. Aggregate abundances of all 43 ARGs detected by metagenomic sequencing and the aggregate abundances of ARGs in the aminoglycoside, ?-lactam, macrolide-lincosamide-streptogramin B (MLSB), and tetracycline AM classes did not differ (log2 fold change < 1.0) between CONV and RWA. These results suggest tha... Presentar Todo |
Palabras claves : |
ANTIMICROBIAL RESISTANCE; BACTERIAL CULTURE; BEEF CATTLE PRODUCTION; METAGENOMICS; RAISED WITHOUT ANTIBIOTICS. |
Asunto categoría : |
L73 Enfermedades de los animales |
Marc : |
LEADER 02646naa a2200301 a 4500 001 1057565 005 2018-09-13 008 2017 bl uuuu u00u1 u #d 024 7 $a10.1128/AEM.01682-17$2DOI 100 1 $aVIKRAM, A. 245 $aImpact of "Raised Without Antibiotics" beef cattle production practices on occurrences of antimicrobial resistance.$h[electronic resource] 260 $c2017 500 $aArticle history: Accepted manuscript posted online 8 September 2017// published in november 2017. 520 $aThe specific antimicrobial resistance (AMR) decreases that can be expected from reducing antimicrobial (AM) use in United States (US) beef production have not been defined. To address this data gap, feces were recovered from 36 lots of ?raised without antibiotics? (RWA) and 36 lots of ?conventional? (CONV) beef cattle. Samples (N = 719) were collected during harvest and distributed over a year. AMR was assessed by: i) culture of six AM-resistant bacteria (ARB); ii) qPCR for 10 AMR genes (ARGs); iii) an qPCR array of 84 ARGs; and iv) metagenomic sequencing. Generally, AMR levels were similar, but some were higher in CONV. The prevalence of third-generation cephalosporin-resistant (3GCr) Escherichia coli was marginally different between production systems (47.5 % CONV, 34.8% RWA, P = 0.04), but the seasonal effect (92.8% summer, 48.3% winter, P < 0.01) was greater. Erythromycin-resistant (ERYr) Enterococcus spp. concentrations significantly differed between production systems (CONV = 1.91 log10 CFU/g, RWA = 0.73 log10 CFU/g, P < 0.01). Levels of aadA1, ant(6)-I, blaACI, erm(A), erm(B), erm(C), erm(F), erm(Q), tet(A), tet(B), tet(M), and tet(X) ARGs were higher (P < 0.05) in CONV. Aggregate abundances of all 43 ARGs detected by metagenomic sequencing and the aggregate abundances of ARGs in the aminoglycoside, ?-lactam, macrolide-lincosamide-streptogramin B (MLSB), and tetracycline AM classes did not differ (log2 fold change < 1.0) between CONV and RWA. These results suggest that further reductions of AM use in US beef cattle production may not yield significant AMR reductions beyond MLSB and tetracycline resistance. 653 $aANTIMICROBIAL RESISTANCE 653 $aBACTERIAL CULTURE 653 $aBEEF CATTLE PRODUCTION 653 $aMETAGENOMICS 653 $aRAISED WITHOUT ANTIBIOTICS 700 1 $aROVIRA, P.J. 700 1 $aAGGA, G.E. 700 1 $aARTHUR, T.M. 700 1 $aBOSILEVAC, J.M. 700 1 $aWHEELER, T.L. 700 1 $aMORLEY, P.S. 700 1 $aBELK, K.E. 700 1 $aSCHMIDT, J.W. 773 $tApplied and Environmental Microbiology, 2017$gv. 83, no. 22, e01682-17.
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Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
22/05/2020 |
Actualizado : |
21/05/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
BELLÉ, C.; RAMOS, R.F.; BALARDIN, R.R.; NORA, D.D.; KASPARY, T. E. |
Afiliación : |
CRISTIANO BELLÉ, Phytus Group, Estação experimental de Itaara, Itaara, Rio Grande do Sul 97185-000, Brazil.; RODRIGO FERRAZ RAMOS, Universidade Federal de Santa Maria, Av. Roraima n° 1000, 97105-900 Santa Maria, Rio Grande do Sul, Brazil.; RICARDO RUBIN BALARDIN, Universidade Federal de Santa Maria, Av. Roraima n° 1000, 97105-900 Santa Maria, Rio Grande do Sul, Brazil; DAIANE DALLA NORA, Universidade Federal de Santa Maria, Av. Roraima n° 1000, 97105-900 Santa Maria, Rio Grande do Sul, Brazil.; TIAGO EDU KASPARY, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
Título : |
Multiplication potential of Meloidogyne arenaria in weeds found in Brazil. |
Fecha de publicación : |
2020 |
Fuente / Imprenta : |
European Journal of Plant Pathology, Volume 157, Issue 2, 1 June 2020, Pages 441-447,2020. Doi: https://doi.org/10.1007/s10658-020-02002-z |
DOI : |
10.1007/s10658-020-02002-z |
Idioma : |
Inglés |
Notas : |
Article history: Accepted: 23 April 2020/Published 08 May 2020/Issue Date June 2020. Correspondence: e-mail: crbelle@gmail.com |
Contenido : |
Abstract:
Weeds are host and multipliers of root-knot nematodes (Meloidogyne spp.). The status quo of the knowledge of the ability of Meloidogyne arenaria to reproduce in weeds is a little unknown. The present study aimed to evaluate the ability of M. arenaria to parasitize and reproduce in different weeds found in Brazil. Thirty-eight weed species were individually inoculated with 5000 eggs and second stage juveniles. Inoculated plants were kept in a greenhouse for 60 days. The design was completely randomized with twelve repetitions. The root system of each plant was evaluated for gall index, number of nematodes per root gram and reproduction factor. M. arenaria showed the ability to parasitize the 38 weed species. It was observed that 76.3% of the evaluated species were susceptible (RF???1.0) to M. arenaria. Oxalis corniculata resulted in the highest nematode RF (34.9). The present study identified for the first time the reproduction potential of M. arenaria on different weeds, showing their polyphagous habit, and indicating species of plants with greater ability to multiply this nematode that need more attention during the integrated management of this root-knot nematodes. |
Palabras claves : |
HOST STATUS; INVASIVE PLANTS; NEMATODE REPRODUCTION; ROOT-KNOT NEMATODES. |
Thesagro : |
BRASIL; MALEZAS. |
Asunto categoría : |
-- |
Marc : |
LEADER 02141naa a2200265 a 4500 001 1061072 005 2021-05-21 008 2020 bl uuuu u00u1 u #d 024 7 $a10.1007/s10658-020-02002-z$2DOI 100 1 $aBELLÉ, C. 245 $aMultiplication potential of Meloidogyne arenaria in weeds found in Brazil.$h[electronic resource] 260 $c2020 500 $aArticle history: Accepted: 23 April 2020/Published 08 May 2020/Issue Date June 2020. Correspondence: e-mail: crbelle@gmail.com 520 $aAbstract: Weeds are host and multipliers of root-knot nematodes (Meloidogyne spp.). The status quo of the knowledge of the ability of Meloidogyne arenaria to reproduce in weeds is a little unknown. The present study aimed to evaluate the ability of M. arenaria to parasitize and reproduce in different weeds found in Brazil. Thirty-eight weed species were individually inoculated with 5000 eggs and second stage juveniles. Inoculated plants were kept in a greenhouse for 60 days. The design was completely randomized with twelve repetitions. The root system of each plant was evaluated for gall index, number of nematodes per root gram and reproduction factor. M. arenaria showed the ability to parasitize the 38 weed species. It was observed that 76.3% of the evaluated species were susceptible (RF???1.0) to M. arenaria. Oxalis corniculata resulted in the highest nematode RF (34.9). The present study identified for the first time the reproduction potential of M. arenaria on different weeds, showing their polyphagous habit, and indicating species of plants with greater ability to multiply this nematode that need more attention during the integrated management of this root-knot nematodes. 650 $aBRASIL 650 $aMALEZAS 653 $aHOST STATUS 653 $aINVASIVE PLANTS 653 $aNEMATODE REPRODUCTION 653 $aROOT-KNOT NEMATODES 700 1 $aRAMOS, R.F. 700 1 $aBALARDIN, R.R. 700 1 $aNORA, D.D. 700 1 $aKASPARY, T. E. 773 $tEuropean Journal of Plant Pathology, Volume 157, Issue 2, 1 June 2020, Pages 441-447,2020. Doi: https://doi.org/10.1007/s10658-020-02002-z
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