ABSTRACT - Vascular mineralization is a hallmark of enzootic calcinosis. Histopathological, ultrastructural, and immunohistochemical investigations were performed on the external carotid arteries of seven sheep naturally poisoned by Nierembergia veitchii. Histologically, moderate to marked hyperplasia of the tunica intima was observed without mineralization. The tunica media exhibited mild to severe mineralization and osteochondroid metaplasia.

ABSTRACT - Vascular mineralization is a hallmark of enzootic calcinosis. Histopathological, ultrastructural, and immunohistochemical investigations were performed on the external carotid arteries of seven sheep naturally poisoned by Nierembergia veitchii. Histologically, moderate to marked hyperplasia of the tunica intima was observed without mineralization. The tunica media exhibited mild to severe mineralization and osteochondroid metaplasia.

This technical working paper seeks to demystify the R+D+I ecosystem transformation process by drawing on the global best practice experiences of three experts whose countries have embarked on the long journey to improve their national agricultural R+D+I systems. In this and related papers, the authors draw on their expertise to provide practical insights to policy makers and others who seek to accelerate progress towards positioning LAC agricultural R+D+I institutions for success.

En esta nueva serie técnica de INIA versa sobre los principales avances de investigación tecnológica en el cultivo de arroz en el marco de la zafra de mayor rendimiento histórico en Uruguay y la región, superando por primera vez la barrera de las 9 t/ha.

ABSTRACT - We describe a new species of Tabanus (for Uruguay, the first in more than 90 years) based on females from the Department of Tacuarembó, Uruguay. Tabanus tacuaremboensissp. n. is the 15th species of the genus Tabanus recorded from Uruguay. The species description is accompanied by illustrations of the diagnostic external and internal characters. In addition, for comparison with the new species, we provide photographs of the regional species of Tabanus whose distributions are still poorly known.

ABSTRACT - We describe a new species of Tabanus (for Uruguay, the first in more than 90 years) based on females from the Department of Tacuarembó, Uruguay. Tabanus tacuaremboensissp. n. is the 15th species of the genus Tabanus recorded from Uruguay. The species description is accompanied by illustrations of the diagnostic external and internal characters. In addition, for comparison with the new species, we provide photographs of the regional species of Tabanus whose distributions are still poorly known.

ABSTRACT - An outbreak of Ricinus communis poisoning in goats with neurological and digestive changes was related to the ingestion of different vegetative parts of the plant. Two poisoned animals died within 5 h of the plant intake showing necrotic gastroenteritis and hepatocytes degeneration and necrosis. Toxicological analysis by HPLC-DAD assay demonstrated 21.1?25.1 μg/g of ricinine in samples of ruminal fluids and 10.1?10.9 μg/g in the liver of poisoned goats. © 2022