Bovinos intoxicados por Melochia pyramidata en Colima, México

Abstract

With the purpose of describing the pathological conditions of bovines intoxicated by consuming huinar (Melochia pyramidata) in Colima, Mexico, there are three cases of animals with signs of incoordination, ataxia, and paralysis of the posterior train, prostration and death, suspects of bovine paralytic rabies. Complementary studies of hematology, necropsies, histopathology, and immunofluorescence were performed and M. pyramidata plants were collected for the detection of alkaloids. Leukocytosis was detected by neutrophilia and normocytic normochromic anemia. The macroscopic findings were the presence of edema in multiple organs. Histopathologically the brain, cerebellum, spinal and oblongata cord, as well as peripheral nerves, presented axonal degeneration and areas of demyelination. In histological test without evidence of lesions, negative to rabies virus in immunofluorescence test and the presence of alkaloids was detected in M. pyramitada. Therefore, the consumption of alkaloids through Melochia pyramidata causes nervous disease in cattle that helps in the differential diagnosis of bovine paralytic rabies. Finally, the description of this case can help identify the toxic flora of western Mexico. toxic plants, huinar, Melochia pyramidata, cattle, toxicity. RESUMEN Con el propósito de describir las condiciones patológicas de bovinos intoxicados por consumir huinar (Melochia pyramidata) en Colima, México, se presentan tres casos de animales con signos de incoordinación, ataxia, parálisis del tren posterior, postración y muerte, sospechosos de rabia paralitica bovina. Se realizaron estudios complementarios de hematología, necropsia, histopatología e inmunofluorescencia, además se colectaron plantas de M. pyramidata para determinar la presencia de alcaloides. Macroscópicamente se observó edema en múltiples órganos, luego, se detectó leucocitosis por neutrofilia y anemia normocítica normocrómica en sangre. Histopatológicamente el cerebro, cerebelo, médula oblonga y espinal, así como nervios periféricos, presentaron degeneración axonal y áreas de desmielinización. En prueba histológica sin evidencia de lesiones, negativo a virus rábico en prueba de inmunoflorescencia y se detectó la presencia de alcaloides en M. pyramitada. Por lo tanto, el consumo de alcaloides a través de Melochia pyramidata provoca enfermedad nerviosa en bovinos que ayuda en el diagnóstico diferencial de rabia paralitica bovina. Finalmente, la descripción de este caso puede ayudar a identificar la flora tóxica del occidente de México.plantas tóxicas, intoxicación, huinar, Melochia pyramidata, bovinos.

Seedling development of Melochia pyramidata in different substrates and pot sizes

“…The analysis of the genotypes for each pot size reveals that, in the 1.8-L pot, genotype MP2 had the highest number of flower buds. M. Pyramidata is a shrub from 1 to 1.5 meters high, highly branched, with purple flowers (Johnatan et al, 2018), small and in large numbers. Thus, growing this species in pots for use in indoor environments could be an innovation for the floriculture market.…”