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 | Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
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Registro completo
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Biblioteca (s) : |
INIA La Estanzuela. |
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Fecha : |
03/09/2019 |
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Actualizado : |
28/04/2021 |
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Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
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Autor : |
RABAZA, A.; BANCHERO, G.; CAJARVILLE,C.; ZUNINO, P.; BRITO, A.; REPETTO, J.; FRAGA, M. |
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Afiliación : |
ANA VIRGINIA RABAZA MARTINEZ, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; GEORGGET ELIZABETH BANCHERO HUNZIKER, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; CECILIA CAJARVILLE, Departamento de Nutrición Animal, Facultad de Veterinaria, Universidad de la República, San José, Uruguay; PABLO ZUNINO, MEC/ IIBCE (Instituto de Investigaciones de Ciencias Biológicas "Clemente Estable"), Montevideo, Uruguay.; Departamento de Nutriciion Animal, Instituto de Produccion Animal, Facultad de Veterinaria, Universidad de la República, Ruta 1 km 42.5, San José 80100, Uruguay.; JOSE LUIS REPETTO CAPELLO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.//Departamento de Bovinos, Instituto de Producción Animal, Facultad de Veterinaria, Universidad de la República, Ruta 1 km 42, CP 80100 San José, Uruguay.; MARTIN FRAGA COTELO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay. |
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Título : |
Effects of feed withdrawal duration on animal behaviour, rumen microbiota and blood chemistry in feedlot cattle: implications for rumen acidosis. |
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Fecha de publicación : |
2019 |
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Fuente / Imprenta : |
Animal, Volume 14 , Issue 1 , January 2020 , pp. 66 - 77. DOI: https://doi.org/10.1017/S1751731119001538 |
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DOI : |
10.1017/S1751731119001538 |
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Idioma : |
Inglés |
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Notas : |
Article history: Received 22 October 2018 // Accepted 13 June 2019. |
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Contenido : |
Abstracts: Feed withdrawal ( FW ) is a frequent issue in open outdoor feedlot systems, where unexpected circumstances can limit the animals? access to food. The relationship among fasting period, animal behaviour during feed reintroduction ( FR ) and acidosis occurrence has not been completely elucidated. Twenty steers fitted with rumen catheters were fed a high-concentrate diet (concentrate : forage ratio 85 : 15) and were challenged by a protocol of FW followed by FR. The animals were randomly assigned to one of the four treatments: FW for 12 h ( T12 ), 24 h ( T24 ), 36 h ( T36 ) or no FW (control group) followed by FR. The steers? behaviour, ruminal chemistry, structure of the ruminal microbial community, blood enzymes and metabolites and ruminal acidosis status were assessed. Animal behaviour was affected by the FW?FR challenge (P<0.05). Steers from the T12, T24 and T36 treatments showed a higher ingestion rate and a lower frequency of rumination. Although all animals were suspected to have sub-acute ruminal acidosis ( SARA ) prior to treatment, a severe case of transient SARA arose after FR in the T12, T24 and T36 groups. The ruminal pH remained below the threshold adopted for SARA diagnosis (pH value=5.6) for more than three consecutive hours (24, 7 and 19 h in the T12, T24 and T36 treatments, respectively). The FW?FR challenge did not induce clinical acute ruminal acidosis even though steers from the T36 treatment presented ruminal pH values that were consistent with this metabolic disorder (pH threshold for acute acidosis=5.2). Total mixed ration reintroduction after the withdrawal period reactivated ruminal fermentation as reflected by changes in the fermentation end-products. Ruminal lactic acid accumulation in steers from the T24 and T36 treatments probably led to the reduction of pH in these groups. Both the FW and the FR phases may have altered the structure of the ruminal microbiota community. Whereas fibrolytic bacterial groups decreased relative abundance in the restricted animals, both lactic acid producer and utiliser bacterial groups increased (P<0.05). The results demonstrated a synchronisation between Streptococcus (lactate producer) and Megasphaera (lactate utiliser), as the relative abundance of both groups increased, suggesting that bacterial resilience may be central for preventing the onset of metabolic disturbances such as ruminal acidosis. A long-FW period (36 h) produced rumen pH reductions well below and lactic acid concentration increased well above the accepted thresholds for acute acidosis without any perceptible clinical signs. MenosAbstracts: Feed withdrawal ( FW ) is a frequent issue in open outdoor feedlot systems, where unexpected circumstances can limit the animals? access to food. The relationship among fasting period, animal behaviour during feed reintroduction ( FR ) and acidosis occurrence has not been completely elucidated. Twenty steers fitted with rumen catheters were fed a high-concentrate diet (concentrate : forage ratio 85 : 15) and were challenged by a protocol of FW followed by FR. The animals were randomly assigned to one of the four treatments: FW for 12 h ( T12 ), 24 h ( T24 ), 36 h ( T36 ) or no FW (control group) followed by FR. The steers? behaviour, ruminal chemistry, structure of the ruminal microbial community, blood enzymes and metabolites and ruminal acidosis status were assessed. Animal behaviour was affected by the FW?FR challenge (P<0.05). Steers from the T12, T24 and T36 treatments showed a higher ingestion rate and a lower frequency of rumination. Although all animals were suspected to have sub-acute ruminal acidosis ( SARA ) prior to treatment, a severe case of transient SARA arose after FR in the T12, T24 and T36 groups. The ruminal pH remained below the threshold adopted for SARA diagnosis (pH value=5.6) for more than three consecutive hours (24, 7 and 19 h in the T12, T24 and T36 treatments, respectively). The FW?FR challenge did not induce clinical acute ruminal acidosis even though steers from the T36 treatment presented ruminal pH values that were consistent with ... Presentar Todo |
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Palabras claves : |
ACIDOSIS RUMINAL; ENGORDE DE BOVINOS; FATTENING; FOOD RESTRICTION; LIVESTOCK; PLATAFORMA DE SALUD ANIMAL; RESTRICCIÓN NUTRICIONAL; RUMINAL ENVIRONMENT; SUB-ACUTE RUMINAL ACIDOSIS. |
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Thesagro : |
COMPORTAMIENTO ANIMAL; GANADO BOVINO. |
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Asunto categoría : |
L02 Alimentación animal |
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Marc : |
LEADER 03782naa a2200349 a 4500
001 1060132
005 2021-04-28
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1017/S1751731119001538$2DOI
100 1 $aRABAZA, A.
245 $aEffects of feed withdrawal duration on animal behaviour, rumen microbiota and blood chemistry in feedlot cattle$bimplications for rumen acidosis.$h[electronic resource]
260 $c2019
500 $aArticle history: Received 22 October 2018 // Accepted 13 June 2019.
520 $aAbstracts: Feed withdrawal ( FW ) is a frequent issue in open outdoor feedlot systems, where unexpected circumstances can limit the animals? access to food. The relationship among fasting period, animal behaviour during feed reintroduction ( FR ) and acidosis occurrence has not been completely elucidated. Twenty steers fitted with rumen catheters were fed a high-concentrate diet (concentrate : forage ratio 85 : 15) and were challenged by a protocol of FW followed by FR. The animals were randomly assigned to one of the four treatments: FW for 12 h ( T12 ), 24 h ( T24 ), 36 h ( T36 ) or no FW (control group) followed by FR. The steers? behaviour, ruminal chemistry, structure of the ruminal microbial community, blood enzymes and metabolites and ruminal acidosis status were assessed. Animal behaviour was affected by the FW?FR challenge (P<0.05). Steers from the T12, T24 and T36 treatments showed a higher ingestion rate and a lower frequency of rumination. Although all animals were suspected to have sub-acute ruminal acidosis ( SARA ) prior to treatment, a severe case of transient SARA arose after FR in the T12, T24 and T36 groups. The ruminal pH remained below the threshold adopted for SARA diagnosis (pH value=5.6) for more than three consecutive hours (24, 7 and 19 h in the T12, T24 and T36 treatments, respectively). The FW?FR challenge did not induce clinical acute ruminal acidosis even though steers from the T36 treatment presented ruminal pH values that were consistent with this metabolic disorder (pH threshold for acute acidosis=5.2). Total mixed ration reintroduction after the withdrawal period reactivated ruminal fermentation as reflected by changes in the fermentation end-products. Ruminal lactic acid accumulation in steers from the T24 and T36 treatments probably led to the reduction of pH in these groups. Both the FW and the FR phases may have altered the structure of the ruminal microbiota community. Whereas fibrolytic bacterial groups decreased relative abundance in the restricted animals, both lactic acid producer and utiliser bacterial groups increased (P<0.05). The results demonstrated a synchronisation between Streptococcus (lactate producer) and Megasphaera (lactate utiliser), as the relative abundance of both groups increased, suggesting that bacterial resilience may be central for preventing the onset of metabolic disturbances such as ruminal acidosis. A long-FW period (36 h) produced rumen pH reductions well below and lactic acid concentration increased well above the accepted thresholds for acute acidosis without any perceptible clinical signs.
650 $aCOMPORTAMIENTO ANIMAL
650 $aGANADO BOVINO
653 $aACIDOSIS RUMINAL
653 $aENGORDE DE BOVINOS
653 $aFATTENING
653 $aFOOD RESTRICTION
653 $aLIVESTOCK
653 $aPLATAFORMA DE SALUD ANIMAL
653 $aRESTRICCIÓN NUTRICIONAL
653 $aRUMINAL ENVIRONMENT
653 $aSUB-ACUTE RUMINAL ACIDOSIS
700 1 $aBANCHERO, G.
700 1 $aCAJARVILLE,C.
700 1 $aZUNINO, P.
700 1 $aBRITO, A.
700 1 $aREPETTO, J.
700 1 $aFRAGA, M.
773 $tAnimal, Volume 14 , Issue 1 , January 2020 , pp. 66 - 77. DOI: https://doi.org/10.1017/S1751731119001538
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Registro original : |
INIA La Estanzuela (LE) |
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Registro completo
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Biblioteca (s) : |
INIA Treinta y Tres. |
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Fecha actual : |
17/02/2015 |
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Actualizado : |
18/05/2018 |
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Tipo de producción científica : |
Actividades de Difusión |
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Autor : |
INIA TREINTA Y TRES.; PROGRAMA NACIONAL DE PRODUCCIÓN DE ARROZ. |
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Título : |
Arroz: resultados experimentales 2007-2008. |
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Complemento del título : |
Jornada anual de arroz, 2008, INIA Treinta y Tres. |
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Fecha de publicación : |
2008 |
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Fuente / Imprenta : |
Treinta y Tres, (Uruguay): INIA, 2008. |
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Páginas : |
202 p. |
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Serie : |
(INIA Serie Actividades de Difusión; 545). |
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Idioma : |
Español |
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Palabras claves : |
ENFERMEDADES DEL TALLO; MOMENTO DE INUNDACIÓN; PRODUCCION DE SEMILLAS; TECNOLOGIA CLEARFIELD. |
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Thesagro : |
AGROCLIMATOLOGIA; ARROZ; CAPIN ANNONI; COLEOPTERA; DENSIDAD DE SIEMBRA; ECOFISIOLOGIA DEL CULTIVO; EL PASO 144; ESCARDA; EUETHEOLA HUMILIS; EVALUACION DE CULTIVARES; FERTILIZACION NITROGENADA; FITOMEJORAMIENTO; FUNGICIDAS; INIA OLIMAR; MALEZAS; MANEJO DE SUELOS; MANEJO INTEGRADO DE PLAGAS; ORYZOPHAGUS ORYZAE; PYRICULARIA GRISEA; RIEGO; SCARABAEIDAE. |
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Asunto categoría : |
F01 Cultivo |
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URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/4107/1/Ad-545.pdf
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Marc : |
LEADER 01237nam a2200433 a 4500
001 1052232
005 2018-05-18
008 2008 bl uuuu u00u1 u #d
100 1 $aINIA TREINTA Y TRES.
245 $aArroz$bresultados experimentales 2007-2008.
260 $aTreinta y Tres, (Uruguay): INIA$c2008
300 $a202 p.
490 $a(INIA Serie Actividades de Difusión; 545).
650 $aAGROCLIMATOLOGIA
650 $aARROZ
650 $aCAPIN ANNONI
650 $aCOLEOPTERA
650 $aDENSIDAD DE SIEMBRA
650 $aECOFISIOLOGIA DEL CULTIVO
650 $aEL PASO 144
650 $aESCARDA
650 $aEUETHEOLA HUMILIS
650 $aEVALUACION DE CULTIVARES
650 $aFERTILIZACION NITROGENADA
650 $aFITOMEJORAMIENTO
650 $aFUNGICIDAS
650 $aINIA OLIMAR
650 $aMALEZAS
650 $aMANEJO DE SUELOS
650 $aMANEJO INTEGRADO DE PLAGAS
650 $aORYZOPHAGUS ORYZAE
650 $aPYRICULARIA GRISEA
650 $aRIEGO
650 $aSCARABAEIDAE
653 $aENFERMEDADES DEL TALLO
653 $aMOMENTO DE INUNDACIÓN
653 $aPRODUCCION DE SEMILLAS
653 $aTECNOLOGIA CLEARFIELD
700 1 $aPROGRAMA NACIONAL DE PRODUCCIÓN DE ARROZ.
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INIA Treinta y Tres (TT) |
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