|
|
Registro completo
|
Biblioteca (s) : |
INIA Treinta y Tres. |
Fecha : |
26/06/2018 |
Actualizado : |
10/10/2019 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Autor : |
BAO, L.; GINELLA, J.; CADENAZZI, M.; CASTIGLIONI, E.A.; MARTÍNEZ, S.; CASALES, L.; CARABALLO, M.P.; LABORDA, A.; SIMO, M. |
Afiliación : |
LETICIA BAO, Unidad de Entomología, Facultad de la República, UDELAR.; JUAQUÍN GINELLA, Sección Entomología. Facultad de Ciencias, UDELAR.; MÓNICA CADENAZZI, Departamento de Biometría Estadística y Computación, EEMAC, Facultad de Agronomía, UDELAR.; ENRIQUE A. CASTIGLIONI, Centro Universitario Regional Este (CURE). UDELAR.; SEBASTIÁN MARTÍNEZ KOPP, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; LUIS ALBERTO CASALES SOSA, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay; MARÍA P. CARABALLO, Unidad de Entomología. Facultad de Ciencias, UDELAR.; ÁLVARO LABORDA, Sección Entomología. Facultad de Ciencias. UDELAR.; MIGUEL SIMO, Sección Entomología. Facultad de Ciencias. UDELAR. |
Título : |
Spider assemblages associated with different crop stages of irrigated rice agroecosystems form eastern Uruguay. |
Fecha de publicación : |
2018 |
Fuente / Imprenta : |
Biodiversity Data Journal, 6: e24974 |
DOI : |
10.3897/BDJ.6.e24974 |
Idioma : |
Inglés |
Notas : |
Article history: Received: 12 Mar 2018. Accepted: 24 Apr 2018. Published: 3 May 2018. |
Contenido : |
The rice crop and associated ecosystems constitute a rich mosaic of habitats that preserve a rich biological diversity. Spiders are an abundant and successful group of natural predators that are considered efficient in the biocontrol of the major insect pests in agroecosystems. Spider diversity in different stages of the rice crop growth from eastern Uruguay was analysed. Field study was developed on six rice farms with rotation system with pasture, installed during intercropping stage as cover crop. Six rice crops distributed in three locations were sampled with pitfall and entomological vaccum suction machine. Sixteen families, representing six guilds, were collected. Lycosidae, Linyphiidae, Anyphaenidae and Tetragnathidae were the most abundant families (26%, 25%, 20% and 12%, respectively) and comprised more than 80% of total abundance. Other hunters (29%), sheet web weavers (25%) and ground hunters (24%) were the most abundant guilds. Species composition along different crop stages was significantly different according to the ANOSIM test. The results showed higher spider abundance and diversity along the crop and intercrop stages. This study represents the first contribution to the knowledge of spider diversity associated with rice agroecosystem in the country. |
Palabras claves : |
AGROECOLOGY; DIVERSITY; GUILDS COMPOSITION; RICE CROP. |
Thesagro : |
AGROECOLOGÍA; ARANEAE; ARROZ; CULTIVO; DIVERSIDAD. |
Asunto categoría : |
H10 Plagas de las plantas |
URL : |
http://www.ainfo.inia.uy/digital/bitstream/item/10482/1/Martinez-arb-2018.pdf
|
Marc : |
LEADER 02296naa a2200349 a 4500 001 1058735 005 2019-10-10 008 2018 bl uuuu u00u1 u #d 024 7 $a10.3897/BDJ.6.e24974$2DOI 100 1 $aBAO, L. 245 $aSpider assemblages associated with different crop stages of irrigated rice agroecosystems form eastern Uruguay.$h[electronic resource] 260 $c2018 500 $aArticle history: Received: 12 Mar 2018. Accepted: 24 Apr 2018. Published: 3 May 2018. 520 $aThe rice crop and associated ecosystems constitute a rich mosaic of habitats that preserve a rich biological diversity. Spiders are an abundant and successful group of natural predators that are considered efficient in the biocontrol of the major insect pests in agroecosystems. Spider diversity in different stages of the rice crop growth from eastern Uruguay was analysed. Field study was developed on six rice farms with rotation system with pasture, installed during intercropping stage as cover crop. Six rice crops distributed in three locations were sampled with pitfall and entomological vaccum suction machine. Sixteen families, representing six guilds, were collected. Lycosidae, Linyphiidae, Anyphaenidae and Tetragnathidae were the most abundant families (26%, 25%, 20% and 12%, respectively) and comprised more than 80% of total abundance. Other hunters (29%), sheet web weavers (25%) and ground hunters (24%) were the most abundant guilds. Species composition along different crop stages was significantly different according to the ANOSIM test. The results showed higher spider abundance and diversity along the crop and intercrop stages. This study represents the first contribution to the knowledge of spider diversity associated with rice agroecosystem in the country. 650 $aAGROECOLOGÍA 650 $aARANEAE 650 $aARROZ 650 $aCULTIVO 650 $aDIVERSIDAD 653 $aAGROECOLOGY 653 $aDIVERSITY 653 $aGUILDS COMPOSITION 653 $aRICE CROP 700 1 $aGINELLA, J. 700 1 $aCADENAZZI, M. 700 1 $aCASTIGLIONI, E.A. 700 1 $aMARTÍNEZ, S. 700 1 $aCASALES, L. 700 1 $aCARABALLO, M.P. 700 1 $aLABORDA, A. 700 1 $aSIMO, M. 773 $tBiodiversity Data Journal, 6: e24974
Descargar
Esconder MarcPresentar Marc Completo |
Registro original : |
INIA Treinta y Tres (TT) |
|
Biblioteca
|
Identificación
|
Origen
|
Tipo / Formato
|
Clasificación
|
Cutter
|
Registro
|
Volumen
|
Estado
|
Volver
|
|
| Acceso al texto completo restringido a Biblioteca INIA La Estanzuela. Por información adicional contacte bib_le@inia.org.uy. |
Registro completo
|
Biblioteca (s) : |
INIA La Estanzuela. |
Fecha actual : |
03/09/2019 |
Actualizado : |
28/04/2021 |
Tipo de producción científica : |
Artículos en Revistas Indexadas Internacionales |
Circulación / Nivel : |
Internacional - -- |
Autor : |
RABAZA, A.; BANCHERO, G.; CAJARVILLE,C.; ZUNINO, P.; BRITO, A.; REPETTO, J.; FRAGA, M. |
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. |
Título : |
Effects of feed withdrawal duration on animal behaviour, rumen microbiota and blood chemistry in feedlot cattle: implications for rumen acidosis. |
Fecha de publicación : |
2019 |
Fuente / Imprenta : |
Animal, Volume 14 , Issue 1 , January 2020 , pp. 66 - 77. DOI: https://doi.org/10.1017/S1751731119001538 |
DOI : |
10.1017/S1751731119001538 |
Idioma : |
Inglés |
Notas : |
Article history: Received 22 October 2018 // Accepted 13 June 2019. |
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 |
Palabras claves : |
ACIDOSIS RUMINAL; ENGORDE DE BOVINOS; FATTENING; FOOD RESTRICTION; LIVESTOCK; PLATAFORMA DE SALUD ANIMAL; RESTRICCIÓN NUTRICIONAL; RUMINAL ENVIRONMENT; SUB-ACUTE RUMINAL ACIDOSIS. |
Thesagro : |
COMPORTAMIENTO ANIMAL; GANADO BOVINO. |
Asunto categoría : |
L02 Alimentación animal |
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
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! |
|
|