Comparative studies on erythrocyte calcium, potassium, haemoglobin concentration, osmotic resistance and sedimentation rates in grey duiker Sylvicapra grimmia, sheep and goats experimentally infected with Trypanosoma congolense.Reportar como inadecuado




Comparative studies on erythrocyte calcium, potassium, haemoglobin concentration, osmotic resistance and sedimentation rates in grey duiker Sylvicapra grimmia, sheep and goats experimentally infected with Trypanosoma congolense. - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Veterinary Archives, Vol.74 No.3 June 2004. -

A comparative study of the haemoglobin Hb concentration, erythrocyte sedimentation rates ESR, osmotic resistance EOR and erythrocyte dynamics of calcium Ca++ and potassium K+ ions was carried out on 10 grey duiker Sylvicapra grimmia, 15 female West African dwarf sheep and 15 female Yankassa goats during the course of experimental Trypanosoma congolense infection. Grey duiker developed a transient parasitaemia and mild anaemia, while sheep and goats developed progressive parasitaemia, pyrexia, anaemia and loss of condition necessitating their treatment at 49 days post-infection to prevent imminent mortality. Grey duiker maintained consistently unchanged levels of Hb concentration, ESR and erythrocyte Ca++ levels, and transiently reduced EOR and erythrocyte K+ levels throughout the course of T. congolense infection. On the other hand, infected sheep and goats developed progressive decreases in Hb concentration, EOR and erythrocyte K+ levels, progressive increases in ESR and erythrocyte Ca++ levels. These changes were much more severe in infected goats and sheep. This study has shown that the relative trypanotolerance of infected grey duiker are based on their superior ability to control parasitaemia, maintain erythrocytic structural integrity and homeostasis, and hence limit anaemia and other deleterious effects of trypanosome infection than is the case with its domestic small ruminant counterparts. Thus, grey duiker may be a substitute for African buffalo in research efforts to unravel the mystery of trypanotolerance, especially in both wild and domesticated ruminants. These animals also offer valuable substitutes for animal protein sources for the teeming human population in tsetse and trypanosome endemic areas where their mass domestication and rearing is encouraged.

erythrocyte biochemistry; grey duiker; sheep; goats; Trypanosoma congolense; Trypanotolerance



Autor: Ajibola Oluwole Ogunsanmi - ; Department of Wildlife and Fisheries Management, University of Ibadan, Ibadan, Nigeria Victor Oluse

Fuente: http://hrcak.srce.hr/



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