| |
|
|
|
Registro completo
|
|
Biblioteca (s) : |
INIA Las Brujas; INIA Treinta y Tres. |
|
Fecha : |
22/07/2018 |
|
Actualizado : |
28/11/2018 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Autor : |
WEINROTH, M.D.; SCOTT, H.M.; NORBY, B.; LONERAGAN, G.H.; NOYES, N.R.; ROVIRA, P.J.; DOSTER, E.; YANG, X.; WOERNER, D.R.; MORLEY, P.S.; BELK, K.E. |
|
Afiliación : |
M.D. WEINROTH, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program); H.M. SCOTT, Universidad de Texas A&M; B. NORBY, Universidad de Michigan State (MSU); G.H. LONERAGAN, Texas Tech University; N.R. NOYES, Universidad de Colorado State (CSU); PABLO JUAN ROVIRA SANZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; E. DOSTER, Universidad de Colorado State (CSU); X. YANG, Universidad de California Davis (UCD); D.R. WOERNER, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program); P. S. MORLEY, Universidad de Colorado State (CSU); K. E. BELK, Universidad de Colorado State (CSU)/ Department of Animal Science (Meat Program). |
|
Título : |
Effects of ceftiofur and chlortetracycline on the resistomes of feedlot cattle. |
|
Fecha de publicación : |
2018 |
|
Fuente / Imprenta : |
Applied and Environmental Microbiology, July 2018, vol. 84, no.13, e00610-18. |
|
Descripción física : |
This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license. |
|
ISSN : |
0099-2240 |
|
DOI : |
10.1128/AEM.00610-18 |
|
Idioma : |
Inglés |
|
Notas : |
Article history: Received 15 March 2018. / Accepted 24 April 2018. / Accepted manuscript posted online 4 May 2018. OPEN ACCESS. |
|
Contenido : |
ABSTRACT.
Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, genes that were selectively enriched through culture and qPCR were not identified through shotgun metagenomic sequencing in this study, suggesting that changes previously documented did not reflect changes affecting the majority of bacterial genetic elements found in the predominant fecal resistome.
© 2018 American Society for Microbiology. MenosABSTRACT.
Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, gen... Presentar Todo |
|
Palabras claves : |
ANTIBIOTIC RESISTANCE; ANTIMICROBIAL AGENTS; CATTLE; METAGENOMICS; POSTANTIBIOTIC EFFECT. |
|
Thesagro : |
FEEDLOT. |
|
Asunto categoría : |
--
L02 Alimentación animal |
|
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/12027/1/e00610-18.full.pdf
|
|
Marc : |
LEADER 03064naa a2200361 a 4500
001 1058828
005 2018-11-28
008 2018 bl uuuu u00u1 u #d
022 $a0099-2240
024 7 $a10.1128/AEM.00610-18$2DOI
100 1 $aWEINROTH, M.D.
245 $aEffects of ceftiofur and chlortetracycline on the resistomes of feedlot cattle.$h[electronic resource]
260 $c2018
300 $cThis is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.
500 $aArticle history: Received 15 March 2018. / Accepted 24 April 2018. / Accepted manuscript posted online 4 May 2018. OPEN ACCESS.
520 $aABSTRACT. Treatment of food-producing animals with antimicrobial drugs (AMD) is controversial because of concerns regarding promotion of antimicrobial resistance (AMR). To investigate this concern, resistance genes in metagenomic bovine fecal samples during a clinical trial were analyzed to assess the impacts of treatment on beef feedlot cattle resistomes. Four groups of cattle were exposed, using a 2-by-2 factorial design, to different regimens of antimicrobial treatment. Injections of ceftiofur crystalline- free acid (a third-generation cephalosporin) were used to treat all cattle in treatment pens or only a single animal, and either chlortetracycline was included in the feed of all cattle in a pen or the feed was untreated. On days 0 and 26, respectively, pre- and posttrial fecal samples were collected, and resistance genes were characterized using shotgun metagenomics. Treatment with ceftiofur was not associated with changes to ?-lactam resistance genes. However, cattle fed chlortetracycline had a significant increase in relative abundance of tetracycline resistance genes. There was also an increase of an AMR class not administered during the study, which is a possible indicator of coselection of resistance genes. Samples analyzed in this study had previously been evaluated by culture characterization (Escherichia coli and Salmonella) and quantitative PCR (qPCR) of metagenomic fecal DNA, which allowed comparison of results with this study. In the majority of samples, genes that were selectively enriched through culture and qPCR were not identified through shotgun metagenomic sequencing in this study, suggesting that changes previously documented did not reflect changes affecting the majority of bacterial genetic elements found in the predominant fecal resistome. © 2018 American Society for Microbiology.
650 $aFEEDLOT
653 $aANTIBIOTIC RESISTANCE
653 $aANTIMICROBIAL AGENTS
653 $aCATTLE
653 $aMETAGENOMICS
653 $aPOSTANTIBIOTIC EFFECT
700 1 $aSCOTT, H.M.
700 1 $aNORBY, B.
700 1 $aLONERAGAN, G.H.
700 1 $aNOYES, N.R.
700 1 $aROVIRA, P.J.
700 1 $aDOSTER, E.
700 1 $aYANG, X.
700 1 $aWOERNER, D.R.
700 1 $aMORLEY, P.S.
700 1 $aBELK, K.E.
773 $tApplied and Environmental Microbiology, July 2018, vol. 84, no.13, e00610-18.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA Las Brujas (LB) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
|
|
Registro completo
|
|
Biblioteca (s) : |
INIA La Estanzuela; INIA Tacuarembó. |
|
Fecha actual : |
01/10/2014 |
|
Actualizado : |
23/01/2023 |
|
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
|
Circulación / Nivel : |
B - 4 |
|
Autor : |
TIERI, M.; LA MANNA, A.; BANCHERO, G.; MIERES, J.; FERNANDEZ, E.; INVERNIZZI, G.; BUFFA, I.; MONTOSSI, F. |
|
Afiliación : |
MARIA PAZ TIERI HERRERO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ALEJANDRO FRANCISCO LA MANNA ALONSO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; JUAN MANUEL MIERES VISILLAC, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; ENRIQUE GENARO FERNANDEZ RODRIGUEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; FABIO MARCELO MONTOSSI PORCHILE, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
|
Título : |
Balances de nitrógeno y fósforo en sistemas ganaderos del Uruguay // Nutrient balances of nitrogen and phosphorus in livestock production systems in Uruguay. |
|
Fecha de publicación : |
2012 |
|
Fuente / Imprenta : |
Revista Argentina de Producción Animal, v. 32, suppl. 1, p. 78, 2012. |
|
ISSN : |
0326-0550 |
|
Idioma : |
Español |
|
Notas : |
In: CONGRESO ARGENTINO DE PRODUCCIÓN ANIMAL, 35. 2012. Resúmenes. Córdoba, AR: AAPA, 2012. SP 58. |
|
Contenido : |
El nitrógeno (N) y el fósforo (P) son elementos implicados en la contaminación ambiental. El manejo de nutrientes es un área de reciente interés para la investigación y de creciente preocupación por parte de la sociedad. Una herramienta que se utiliza como indicador de manejo de nutrientes es el balance de nutrientes a escala predial (BP), especialmente de N y P. El objetivo del presente trabajo fue evaluar los balances de N y P y sus eficiencias de aprovechamiento a través de indicadores de predios ganaderos del Uruguay. Se seleccionaron para el período 2010/2011, 24 establecimientos ganaderos pertenecientes a grupos CREA. Los balances N y P se calcularon a escala predial. El cálculo de balances se realizó por diferencia entre ingresos y egresos para N y P, en base anual, expresados en kg/ ha/año. Se consideró en los egresos el N y P exportado en la carne, granos o heno producidos. Los ingresos al predio se estimaron a partir de la cantidad de fertilizantes (F), alimentos externos al establecimiento (A) y forrajes. Además, para el N, se estimó la fijación por leguminosas (FBN). Por medio de correlaciones se evaluaron las relaciones existentes entre las diferentes variables. |
|
Palabras claves : |
BALANCE DE NUTRIENTES; BEEF CATTLE PRODUCTION SYSTEMS; FOSFORO; NITROGEN; NITRÓGENO; NUTRIENT BALANCES; PHOSPHORUS; SISTEMAS DE PRODUCCIÓN; SUSTAINABLILITY; SUSTENTABILIDAD. |
|
Thesagro : |
SISTEMAS DE PRODUCCIÓN; URUGUAY. |
|
Asunto categoría : |
A50 Investigación agraria
L01 Ganadería |
|
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/3407/1/Paginas-desdeTierri.pdf
|
|
Marc : |
LEADER 02395naa a2200373 a 4500
001 1050553
005 2023-01-23
008 2012 bl uuuu u00u1 u #d
022 $a0326-0550
100 1 $aTIERI, M.
245 $aBalances de nitrógeno y fósforo en sistemas ganaderos del Uruguay // Nutrient balances of nitrogen and phosphorus in livestock production systems in Uruguay.
260 $c2012
500 $aIn: CONGRESO ARGENTINO DE PRODUCCIÓN ANIMAL, 35. 2012. Resúmenes. Córdoba, AR: AAPA, 2012. SP 58.
520 $aEl nitrógeno (N) y el fósforo (P) son elementos implicados en la contaminación ambiental. El manejo de nutrientes es un área de reciente interés para la investigación y de creciente preocupación por parte de la sociedad. Una herramienta que se utiliza como indicador de manejo de nutrientes es el balance de nutrientes a escala predial (BP), especialmente de N y P. El objetivo del presente trabajo fue evaluar los balances de N y P y sus eficiencias de aprovechamiento a través de indicadores de predios ganaderos del Uruguay. Se seleccionaron para el período 2010/2011, 24 establecimientos ganaderos pertenecientes a grupos CREA. Los balances N y P se calcularon a escala predial. El cálculo de balances se realizó por diferencia entre ingresos y egresos para N y P, en base anual, expresados en kg/ ha/año. Se consideró en los egresos el N y P exportado en la carne, granos o heno producidos. Los ingresos al predio se estimaron a partir de la cantidad de fertilizantes (F), alimentos externos al establecimiento (A) y forrajes. Además, para el N, se estimó la fijación por leguminosas (FBN). Por medio de correlaciones se evaluaron las relaciones existentes entre las diferentes variables.
650 $aSISTEMAS DE PRODUCCIÓN
650 $aURUGUAY
653 $aBALANCE DE NUTRIENTES
653 $aBEEF CATTLE PRODUCTION SYSTEMS
653 $aFOSFORO
653 $aNITROGEN
653 $aNITRÓGENO
653 $aNUTRIENT BALANCES
653 $aPHOSPHORUS
653 $aSISTEMAS DE PRODUCCIÓN
653 $aSUSTAINABLILITY
653 $aSUSTENTABILIDAD
700 1 $aLA MANNA, A.
700 1 $aBANCHERO, G.
700 1 $aMIERES, J.
700 1 $aFERNANDEZ, E.
700 1 $aINVERNIZZI, G.
700 1 $aBUFFA, I.
700 1 $aMONTOSSI, F.
773 $tRevista Argentina de Producción Animal$gv. 32, suppl. 1, p. 78, 2012.
Descargar
Esconder MarcPresentar Marc Completo |
|
Registro original : |
INIA La Estanzuela (LE) |
|
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
| Expresión de búsqueda válido. Check! |
|
|
