Introduction:Shiga toxin-producing Escherichia coli (STEC) is a zoonotic pathogen that cause food-borne diseases in humans. Cattle and derived foodstuffs play a known role as reservoir and vehicles, respectively. In Uruguay, information about the characteristics of circulating STEC in meat productive chain is scarce. The aim was to characterize STEC strains recovered from 800 bovine carcasses of different slaughterhouses. Methods:To characterize STEC strains we use classical microbiological procedures, Whole Genome Sequencing (WGS) and FAO/WHO risk criteria.

ABSTRACT.- Ergot disease (Claviceps paspali) and sterility have the potential to reduce seed yield in bahiagrass (Paspalum notatum Fluggé). Our objective was to determine the genotypic and environmental effects on seed yield, and the levels of ergot and sterility. Seventeen genotypes were evaluated in three locations across two years for seed yield, ergot severity, and total seed fractions (percentage of full seeds, ergot sclerotia and empty seeds).

ABSTRACT.- Ergot disease (Claviceps paspali) and sterility have the potential to reduce seed yield in bahiagrass (Paspalum notatum Fluggé). Our objective was to determine the genotypic and environmental effects on seed yield, and the levels of ergot and sterility. Seventeen genotypes were evaluated in three locations across two years for seed yield, ergot severity, and total seed fractions (percentage of full seeds, ergot sclerotia and empty seeds).

Los desafíos actuales del cambio climático y la mitigación de gases de efecto invernadero (GEI) indican que la producción ovina sostenible requiere considerar no solo las características tradicionales de producción, sino también aquellas asociadas con la resiliencia, adaptación y la reducción de las emisiones de metano (CH4) y dióxido de carbono (CO2).

CONTENIDO:Guía de la actividad -- Evaluación Nacional de Cultivares de Arroz. -- Resumen de factores climáticos, zafra 2022/2023. -- Fechas esperadas de eventos fenológicos. -- Teledetección, riego y nitrógeno en arroz (Gonzalo Carracelas, Claudia Marchesi, Álvaro Roel, C. Ballester, J. Hornbuckle). -- Evaluación de antecesores y respuesta a nitrógeno en SLI09193:Artigas (Claudia Marchesi). -- Manejo del riego, retiro de agua y momento de cosecha SLI 09193:Artigas y Tacuarembó. (Gonzalo Carracelas, Claudia Marchesi, Álvaro Roel).

ABSTRACT.- We evaluated a combination of two temperatures and two packaging materials for long-term storage of vacuum-packaged (VP) beef striploins. Microbial populations and microbiome composition were monitored during refrigerated storage (120 days between 0-1.5 °C) and refrigerated-then-frozen storage (28 days between 0-1.5 °C then 92 days at -20 °C) under low-O2 permeability VP and high-O2 permeability VP with an antimicrobial (VPAM). Pseudomonas (PSE) and Enterobacteriaceae (EB) counts in VPAM samples were significantly higher (p

ABSTRACT.- This paper reviews toxic plants for livestock in South America. We included 219 plants in this review, considering only the plants that caused at least one demonstrated outbreak of poisoning. Plants reported as toxic in other regions and present in South America, but with no confirmed outbreaks of poisoning in this region, are not included. We report the main aspects of the epidemiology, clinical signs, pathology and economical importance of the poisonings.