Title:	Intoxicação por Echium plantagineum (Boraginaceae) em bovinos no Rio Grande do Sul.
Authors:	MENDEZ, M. del C. RIET-CORREA, F. SCHILD, A. M. GARCIA, J. T. C.
Affiliation:	MARIA DEL CARMEN MÉNDEZ; FRANKLIN RIET-CORREA; ANA LUCIA SCHILD; JOSE TIAGO CAMPOS GARCIA, CPPSUL.
Date Issued:	1985
Citation:	Pesquisa Veterinária Brasileira, v. 5, n. 2, p. 57-64, 1985.
Description:	An outbreak of poisoning by Echium plantagineum is described in the county of Bagé, State of Rio Grande do Sul, Brazil. From a-group of 77 Holstein calves, bom in April and May, 1981, 28 animals died between J une and May of the following year as a consequence of the poisoning. Clinicai signs were characterized by anorexia, tenesmus and rectal prolapse, and in some cases diarrhea, ataxia and ptyalism. The animals died after a course which varied from one to seven days. Some of the surviving calves showed retarded growth, and in three cases photosensitivity. Photosensitization was also observed in some adult cattle. Gross pathological changes were: a small hard liver, an enlarged gallblader with an edematous wall, edemas in the mesentery; intestine and abomasum, and fluid in the body cavities. Main histological lesions were: megalocytosis, fibrosis and proliferation of bile duct cells in the liver, and spongy degeneration of the nervous tissue localized mainly in the white matter. The disease was reproduced experimentally in chickens with a plant sample collected on the farm where the outbreak occurred. The plant was dried and mixed at 0%, 2.5% and 5% with the ration for 50 days, with five replications and two chickens per replication. The mean final weight of the gróup coosuming 5% of plant was significantly lower than that of the other groups at necropsy; seven chickens from de sarne group showed subcutaneous edema, fluid in body cavities, a yellow liver and enlarged gallblader. Histological studies of both groups that consumed E. plantagineum showed megalocytosis, fibrosis and proliferation of bile duct cells in the liver; the alteration was more marked in the 5% group. ln a similar experiment, E.plantagineum, collected in the county of Pelotas, was given to chickens at 0% and 5%
Thesagro:	Bovino Intoxicação Pastagem
NAL Thesaurus:	Echium
Keywords:	plantagineum RS Brasil
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSUL)