Leaf anatomy of three species of Stylosanthes SW. and its association with the composition and formation potencial of phytobezoar in bovines/ Anatomia foliar de tres especies de Stylosanthes SW. e sua associacao com a composicao e formacao potencial de fitobezoares em bovinos

Phytobezoars are structures formed by the aggregation of primarily plant fibers in the digestive tract of ruminants, causing intestinal obstruction that can lead to the death of an animal. Information about the formation of these clusters is scarce. This study identified the main components of bovin...

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Bibliographic Details
Published in:Ciência rural 2013-11, Vol.43 (11), p.2049
Main Authors: Matos, Diogo da Silva, Leme, Flavia Maria, Dias, Edna Scremin, Arruda, Rosani do Carmo de Oliveira
Format: Article
Language:Spanish
Subjects:
Analysis
Beans
Gastrointestinal diseases
Legumes
Livestock
Mimosaceae
Oxalates
Oxalic acid
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Summary:Phytobezoars are structures formed by the aggregation of primarily plant fibers in the digestive tract of ruminants, causing intestinal obstruction that can lead to the death of an animal. Information about the formation of these clusters is scarce. This study identified the main components of bovine phytobezoars and described the leaf anatomy of three species and one variety of Stylosanthes SW.: S.capitata Vogel, S. macrocephala B. Ferreira & S. Costa, S. guianensis var. vulgaris M.B. & Sousa Ferreira Costa cv. 'Mineirao ' and S. guianensis (Aubl.) Sw. These plants are used as feed for livestock and probably contribute to the formation of phytobezoars. The phytobezoars were fragmented for analysis of their internal composition and were studied according to plant anatomy techniques. The fibers and crystals found in phytobezoars were similar to the sclerenchyma fiber bundles found in Stylosanthes. The comparative analysis of Stylosanthes showed differences in the abundance of fibers in the leaflets of each species. S. macrocephala is the variety that may have the highest potential for formation of phytobezoars in the digestive tract of animals because there was an abundance of fibers and crystals present in the leaf. The sclerenchyma bundles, idioblasts, and the abundance of calcium oxalate crystals in Stylosanthes species may potentiate the formation of phytobezoars in ruminants, particularly when these legumes are consumed in excess. Key words: intestinal obstruction, fibers, legumes, Stylosanthes. Fitobezoares sao estruturas formadas pela agregacao de fibras, principalmente vegetais, no trato digestivo de ruminantes, ocasionando obstrucoes intestinais que podem levar o animal a morte. Informacoes sobre a formacao desse aglomerado ainda sao escassas. Neste estudo, sao identificados os principais componentes de fitobezoares bovinos, e descrita as estruturas anatomicas das folhas de tres especies de Stylosanthes SW.: S.capitata Vogel, S. macrocephala M. B. Ferreira & S. Costa, S. guianensis var. vulgaris M.B. Ferreira & Sousa Costa cv 'Mineirao' e S. guianensis (Aubl.) Sw. As plantas selecionadas sao utilizadas na dieta do gado e potenciais formadoras do fitobezoar. Os fitobezoares foram fragmentados para analise de sua composicao e analisados seguindo-se as tecnicas da anatomia vegetal. As fibras e cristais encontrados em fitobezoares sao similares aos observados nos feixes esclerenquimaticos presentes nos foliolos das especies de Stylosanthes avaliadas. N
ISSN:0103-8478