Bacteriological monitoring of abattoirs in Ehime Mbano in Imo state

A total of 24 swab samples from 24 carcasses originally from ten different abattoirs were subjected to bacteriological examination. Two sampling sites, brisket and forearm, consistently showed the highest contamination rates. The following sites are recommended for sampling: on the lateral side of the carcass neck, forearm, shoulder, brisket and abdomen. The neck is recommended for the medial side. Compared to the large variance of  contamination either on individual carcasses or between different carcasses, the differences in the variance of results between double swab and incision sampling techniques should be of minor importance. Considering this big variance of colony counts, it is suggested to take five to size swab samples from ach of at least ten to 15 carcasses once a month. With a view to a more differential and evident evaluation the results should be recorded in a ‘box plots’ and not in the form of mean values and standard deviation. The data confirms bacteriological monitoring of beef carcasses as a useful tool for the verification of slaughter hygiene....

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