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TREMATODES INFESTING THE LIVER OF SHEEP AND GOATS SLAUGHTERED AT THE YELWA-SHENDAM ABATTOIR

ABSTRACT
This research was carried out at the Yelwa-Shendam abattoir, to isolate trematodes from the liver of sheep and goats slaughtered at the abattoir. 130 animals (70 sheep and 60 goats) were observed prior to their slaughter and their livers inspected for trematodes (flukes) after the slaughter (post-mortem). 99 animals (56 sheep and 43 goats) had no diarrhoea while 31 (14 sheep and 17 goats) had diarrhoea. 41 (31.54%) and 89 (68.46%) parasitized and not parasitized by the trematodes respectively. Presence of mucus (running nostrils) was another parameter used.
99 of the animals were without mucus running their nostrils while 31 had running nostrils with percentage of parasites as 31  (23.33%) with the trematodes and 99 (76.15%) without the trematodes. It was also discovered that the liver of highly infested animals were badly damaged by the trematodes which reduced the market value of such products.

INTRODUCTION
Trematodes (flukes) are parasitic flatworms that infect the blood vessels, gastrointestinal tract (GIT), lungs or liver, fore stomach or blood vessels of most ruminants. They are often categorized according to the organ system they invade (Ferreras-Estrad et al 2007). They are among the flatworms under the phylum Platyhelminthese, class Trematoda and sub-classesAspidogastrea and Digenea.
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