Abstract:Allergic dermatitis was studied at a farm located in the municipality of Castanhal in the state of Pará, Brazil, from December 2009 to December 2012. Clinical and epidemiological data were obtained during monthly visits to the farm. Skin biopsies were performed for histopathological examinations, and insects were captured with Centers for Disease Control and Prevention (CDC) traps and live-bait entomological vacuum devices. The property housed a herd of both genders, with 45 Santa Inês sheep of different ages and 72 Texel adults. Of the 72 Texel sheep, 56 were affected.

Resumen: Rhipicephalus (Boophilus) microplus is the most economically important tick of the world, including Brazil. Whereas the epidemiology of R. microplus is well known in most of the Brazilian land, virtually nothing is known from the Brazilian semiarid region, the Caatinga biome. Considering the relevance of R. microplus for the cattle industry within the Caatinga, this study aimed to evaluate for the first time the off-host development of this tick species under natural conditions of the Caatinga. During 2011?2015, engorged females of R.

RESUMO.- Cestrum axillare (anteriormente C. laevigatum), família Solanaceae, é a mais importante planta hepatotóxica do Brasil que causa intoxicação aguda. Tem ocorrência nas regiões Sudeste e Centro-Oeste e em áreas litorâneas do Nordeste.

Resumen: De um total de 2.088 ruminantes necropsiados no Laboratório de Patologia Animal da Universidade Federal de Campina Grande durante o período de janeiro de 2003 a dezembro de 2015, 803 (38,45%) eram bovinos, 651 (31,18%) ovinos e 634 (30,37%) caprinos. Desses, dois caprinos (0,31%), um ovino (0,15%) e um bovino (0,12%) foram diagnosticados com ruptura de artéria aorta devido à presença de aneurismas, correspondendo a 0,19% das causas de morte em ruminantes.

Resumen: El valor de acidez titulable a pH = 7 en suelo (AT_pH7) se utiliza con fines taxonómicos y para estimar la necesidad de encalado. Es posible predecir AT_pH7 por el valor de pH de la mezcla suelo:solución buffer (pH_equilibrio). A cada muestra se le agregó acetato de calcio buffereado a pH = 7, se midió el pH_equilibrio y el álcali necesario para llegar a pH=7. Con pH_equilibrio se estimó AT_pH7 por regresión (AT_eq) o por la cantidad de álcali neutralizado para alcanzar el pH_equilibrio (AT_OH).

Resumen: En Uruguay la producción histórica de semillas de trébol rojo (Trifolium pratense) está ligeramente por encima de los 100 kg/ ha. Este bajo valor puede ser explicado por la dificultad de polinización en esta especie. El objetivo de este estudio fue evaluar la producción de semillas de trébol rojo bajo condiciones de campo utilizando los abejorros nativos Bombus atratus y Bombus bellicosus como polinizadores principales. En este trabajo se utilizó un semillero de trébol rojo de 250 x 200 m en segunda floración, sembrado con el cultivar Estanzuela 116.

Resumen: La podredumbre de raíz y base de tallo causada por Phytophthora sojae es una enfermedad que causa mermas importantes en el cultivo de soja en el mundo y en la región. Este es el primer reporte de este patógeno afectando soja en Uruguay. Para 14 aislados de P. sojae obtenidos de plantas sintomáticas se determinaron siete razas/patotipos diferentes utilizando un set de 14 diferenciales usados internacionalmente para tal fin.

ABSTRACT. There are opportunities to improve livestock family farms (LFFs) sustainability in Uruguay by using the co-innovation approach to change management practices and incorporate technologies. To harness these opportunities, between 2012 and 2015, a research project was implemented in Eastern Uruguay, where three simultaneous processes occurred at three levels:farm, region, and research team.

ABSTRACT. There are opportunities to improve livestock family farms (LFFs) sustainability in Uruguay by using the co-innovation approach to change management practices and incorporate technologies. To harness these opportunities, between 2012 and 2015, a research project was implemented in Eastern Uruguay, where three simultaneous processes occurred at three levels: farm, region, and research team.