RESUMO:Calcinose enzoótica, causada por Nierembergia rivularis, no Uruguai, e Nierembergia veitchii, no Brasil,é uma doença caracterizada por mineralização de tecidos moles, hiperplasia das células parafoliculares da tireoide e elevação nos níveis de cálcio e fósforo. Descreve-se um caso de hiperplasia e carcinoma de células parafoliculares bilateral em um ovino de quatro anos, com calcinose enzoótica associada à intoxicação por Nierembergia rivularis.

ABSTRACT. Acca sellowiana, known as feijoa or pineapple guava, is a diploid, (2n = 2x = 22) outcrossing fruit tree species native to Uruguay and Brazil. The species stands out for its highly aromatic fruits, with nutraceutical and therapeutic value. Despite its promising agronomical value, genetic studies on this species are limited. Linkage genetic maps are valuable tools for genetic and genomic studies, and constitute essential tools in breeding programs to support the development of molecular breeding strategies. A high-density composite genetic linkage map of A.

Resumen: La tricomoniasis bovina es una enfermedad venérea causada por Tritrichomonas foetus, responsable de pérdidas económicas principalmente por infertilidad y aborto en vacas y vaquillonas. El diagnóstico se basa en el cultivo del protozoario y/o su detección por técnicas moleculares. En Uruguay el reporte más reciente del parásito data de 2005 en un feto bovino abortado. El objetivo de este trabajo es comunicar la detección de T. foetus en esmegma prepucial de toros de Uruguay.

RESUMEN. El síndrome de braquiespina es una condición genética de la raza Holstein, detectada en el año 2006. Es causado por una deleción de 3.3 Kb en el gen FANCI localizado en el cromosoma bovino 21. La mutación fue identificada en poblaciones de Holstein de Europa, América del Norte y Asia. Dada la importancia económica del defecto y su amplia distribución mundial, el objetivo de este trabajo ha sido la identificación de animales portadores en el núcleo de selección genética de la raza en Uruguay y el diagnóstico molecular del alelo deletéreo en animales del rodeo nacional.

Abstract: The most widely used rootstocks for pears are of the genus Pyrus and Cydonia. The objective of this study was to evaluate yield and fruit quality of 'Williams' pear trees on different rootstocks. The experiment was conducted at the Instituto Nacional de Investigación Agropecuaria INIA Las Brujas, Uruguay. 'Williams' trees were planted in 2003 and evaluated during four consecutive growing seasons starting in 2014/15. Rootstocks were 'OH×F40' and 'OH×F69' (Pyrus communis), 'BA29', 'EMC', and 'Adams' quince (Cydonia oblonga).

Abstract. Fruit quality of 'Williams' pear produced in different Uruguayan commercial orchards presents some variability. It is difficult to understand if these differences are due to environmental or genetic (different accessions) factors linked to the source of plant material used for propagation. To investigate if there are genetic differences among them, this research intended to evaluate the phenotypic characteristics of different sources of 'Williams' pear accessions under the same growing conditions. The trial was carried out in 2007 at INIA Las Brujas, Canelones, Uruguay.

Abstract. Pear is one of the most important temperate fruit crops. Uruguay aims at producing pears of high quality to reach regional markets as well as those of the Northern Hemisphere. Nevertheless, local climate variability and soil conditions frequently pose sanitary challenges for pear production, mainly in the south of the country, where the major pear producing area is located.

Abstract: Pear (Pyrus communis) is reasonably well-adapted to the average climatic conditions of southern Uruguay, but the climatic variables are not always agreeable for satisfactory production. The objective of this research was to evaluate the impact of climatic factors, on yield components (average fruit weight and productivity) of 'Williams' pears on two different rootstocks ('OH×F40' and 'BA29'). The experiment was established in July 2003 at Instituto Nacional de Investigación Agropecuaria - INIA Las Brujas (34°67?S; 56°37?W).

Abstract: 'Williams', the most cultivated pear (Pyrus communis) in Uruguay, was grafted on:three P. communis rootstocks (OH×F333, OH×F51, OH×F97); one P. calleryana (D6); and two Cydonia oblonga (quince) rootstocks (BA29 and EMC). To evaluate the performance of these combinations in southern Uruguay, trees were planted in 1998 at the INIA Las Brujas. The crops considered in this report were from 2014 to 2018. Productivity was evaluated as well as average fruit weight, firmness, diameter, soluble solids, and number of fruits.

Abstract: Pear is a fruit of great importance for human nutrition due to the organoleptic characteristics and nutritional composition. Its cultivation in Uruguay generally uses rootstocks for adaptation to the soil, productiveness and precociousness, but rootstock selection may also influence fruit quality, with the ability to change its chemical composition.