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International Journal of Morphology

On-line version ISSN 0717-9502

Abstract

EMIKPE, B.O; TAIWO, V. O  and  ONILUDE, O. M. The Gut and Lung Morphometry in Experimental and Natural Lineage 1 Variant of Peste des Petits Ruminants Virus Infection in Nigerian Goats. Int. J. Morphol. [online]. 2011, vol.29, n.2, pp.585-590. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022011000200048.

The lung and gut morphometry in both natural and experimental Peste de petit ruminant (PPR) virus which are scanty in literature hence the need for this study. The goats that were submitted for necropsy in the Department of Veterinary Pathology University of Ibadan between 2009 and 2010 and the gross pathological diagnosis were PPR were enrolled in this study. The degree of pneumonia as a percentage of the total lung volume was estimated using standard methods. The gut morphometry of goats experimentally infected with PPR virus was also used. Student "T" test was used for the test of significance in evaluating the effect of age, sex and the lung consolidation pattern in natural PPR and analysis of the gut morphometry. Complicated PPR had significant higher pulmonary consolidation when compared with the uncomplicated PPR (p< 0.05). The pulmonary consolidation was significantly higher on the right lung with a mean percentage value of 6.54 than the left lung (p< 0.05). The caudal lobe was more consolidated than the cranial and middle lobes in natural PPR. The pulmonary consolidation was more in goats less than a year, while the buck had a significantly higher pulmonary consolidation than the does (p< 0.05). There was no significant difference in the mean length of the villi and width of the villi of PPR virus infected goats when compared to the control, however a significant difference was observed in the cryptal depth (p< 0.05). There was a significant difference in the mean villi length and cryptal depth of goats with complicated PPR (Mannheimia hemolytica) infected goats (p< 0.05) relative to the control. From this study, it showed that most natural PPR were complicated with bacteria and this complication may have contributed to the fatality associated with PPR especially those caused by lineage 1 viruses. This study also showed that secondary bacterial involvement in course of PPR affect the gut morphometry and that could account for the severity of intestinal lesion commonly observed with field PPR in Nigerian goats.

Keywords : Morphometry; Gut; Pneumonia; Natural PPRV; Experimental PPRV; Goats.

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