Originals

A STUDY OF ABATTOIR REJECTIONS OF SLAUGHTERED SHEEP DUE TO PARASITIC INFECTION
Félix Valcárcel1; David Vilallonga1

The aim of the study was to determine which diseases go unnoticed throughout the sheep’s life cycle and that, thanks to the abattoir management system, do not enter the human food chain. The study was carried out in an abattoir in central Spain from October 2010 to September 2011. A batch of animals was selected at random each month. Rejections were subject to post mortem inspection and lesions were described in accordance with the terms generally used by offiial veterinarians. Of the total 577 rejections, 220 (38.13%) were due to parasites. Rejections were relatively high in lambs (16.04%) and very high in adults (54.75%). Particular attention should be paid to rejections due to hydatidosis and cisticercosis accounting for 21.66% and 4.99% respectively of the adults and lambs analysed. Rejections caused by trematodes were due to Dicrocoelium dendriticum and the prevalence was very low. Very low percentages of verminous pneumonia and sarcosporidiosis were also detected. No other parasitic processes were detected. Based on these results, it is possible to conduct a more specifi classifiation and quantifiation of processes that tend to go undetected in health campaigns and programmes and which could constitute a health risk if they entered the food chain.

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