bloat and colic in horses experimentally induced by the ingestion of panicum maximum cv. ‘mombaça’ timpanismo e cólica em equinos induzidos experimentalmente pela ingestão de panicum maximum cv. ‘mombaça’

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ID: 141849
2012
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Abstract
In the Amazon region, sprouting pastures of Panicum maximum cause colic and death in horses and mules. To produce the disease two experiments were performed with growing P. maximum cv. 'Mombaça' in penned horses. In Experiment 1, at the beginning of the raining season, 10 horses were fed with recently harvested sprouting P. maximum. Two horses showed colic on the 5th and 11th day after start of the ingestion. In Experiment 2, also during the raining season, the same 10 horses used in Experiment 2 were divided into two groups of 5 horses each. Group 1 received sprouting P. maximum immediately after harvested and Group 2 received the grass 24 hours after harvested. The control group consisted of four animals which were placed in individual pens and fed with Pennisetum purpureum and commercial ration twice a day. One horse from Group 2 showed colic on day 13th after the start of feeding. The other horses of both groups showed intestinal bloat. In both experiments affected horses recovered after the end of the administration. The control group did not showed clinical signs. These results demonstrated that the disease is caused by the ingestion of sprouting P. maximum during the rainy season. The results in experiment 2 showed that P. maximum do not loss toxicity 24 hours after harvesting. Clinical signs suggest that primary alteration caused by P. maximum is intestinal fermentation followed by bloat.
Na região Amazônica, Panicum maximum em brotação causa cólica em equinos durante o período chuvoso. Com o objetivo de reproduzir experimentalmente a doença, foram realizados dois experimentos com P. maximum cv. 'Mombaça' em brotação. No Experimento 1, 10 equinos receberam o capim em brotação, ofertado no coxo. Dois animais apresentaram cólica, um no 5° dia e outro no 11° dia de experimento. No Experimento 2, também durante a época de chuvas, os mesmos 10 animais foram separados em dois grupos de 5, um grupo recebia P. maximum recém cortado e o outro recebia o capim cortado e dessecado à sombra durante 24 horas antes da administração. O grupo controle de ambos os experimentos foi constituído por quatro equinos, mantidos em baias individuais, recebendo capim Pennisetum purpureum picado e ração comercial duas vezes ao dia. No grupo que recebia o capim coletado com 24 horas de antecedência, um animal apresentou cólica no 13° dia de experimento. Os demais equinos dos grupos 1 e 2 mostraram sinais de timpanismo intestinal. Nos dois experimentos, os animais afetados recuperaram-se espontaneamente após o final da ingestão. O grupo controle não apresentou sinais clínicos. Os resultados comprovam que a doença é causada pela ingestão de pastagens de P. maximum em brotação. Os resultados do Experimento 2 demonstraram que P. maximum não perde toxicidade 24 horas após a coleta. Os sinais clínicos observados sugerem que a alteração primária causada por P. maximum é uma alteração fermentativa com produção de gás e timpanismo intestinal.
Reference Key
cerqueira2012cinciabloat Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Valíria Duarte Cerqueira;Gabriela Riet-Correa;Marcos Dutra Duarte;Carlos Alberto de Oliveira;Franklin Riet-Correa
Journal Trials
Year 2012
DOI
10.1590/S0103-84782012001100019
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012001100019
Keywords
panicum maximum

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