Counts of salmonellae were done by the most probable number technique on samples collected from the hands of abattoir workers as well as on samples from hand-rails and posts regularly touched by the workers. Salmonellae were isolated from the hands of 52% of the workers who handled the hide. They had the highest average counts with counts ranging from 0 to greater than 3663 salmonellae. The remaining workers on the slaughter floor and those in the boning room had generally lower counts with contamination rates of 28% and 45% respectively. Only 3 of the 100 samples collected from the hand-rails and posts contained salmonellae. The average count was 0.11 per 100 cm2.
All emergency and casualty bovines in the Republic of Ireland that are deemed to be fit for human consumption must be accompanied to the slaughterhouse by an official veterinary certificate (VC). Cullinane et al (2010) conducted a review of bovine cases consigned under veterinary certification to emergency (ES) and casualty (CS) slaughter in the Republic of Ireland during 2006 to 2008. The current paper further evaluates these results, with emphasis on the period of validity, transport distance and transport conditions, and considers whether the current VC adequately protects welfare. Of 1,255 veterinary certificates, the median time between certification and slaughter was 1 (minimum 0, maximum 452) day, with one-fifth in excess of three days. The median straight-line distance between farm and slaughterhouse was 22 km; 82 and 98% study animals were transported distances of no more than 40 and 100 km, respectively. In 27% of VCs, no slaughterhouse was designated; hence the transport distance was not limited. In 77% of all cases, the disability/injury was related to the locomotor system, including 35% with limb fractures. Veterinary certification of the latter as being fit for transport appears to have been in contravention of animal transport and welfare legislation. The welfare of animals would be improved if each VC included a certified period of validity. In future, veterinary certificates should state clearly a maximum period of validity between certification and slaughter, a maximum distance that the animal should be transported and a minimum level of comfort under which the animal must be transported. Historically, in the Republic of Ireland, there was no suitable non-transport alternative available to cattle producers wanting to salvage an otherwise healthy animal that had suffered an accident or injury resulting in acute pain. An alternative is now available, with the introduction of an on-farm emergency slaughter policy.
Counts of salmonellae were performed by the most probable number technique on steels, aprons, scabbards and on structures within the abattoir with which carcases made accidental contact. Counts on steels ranged from 0-153 salmonellae per steel; aprons from 0-14 per 100 cm2; scabbards from 0-greater than 3667 per scabbard; and carcase bump points from 0-40 per 100 cm2. Contamination rates were highest for the equipment of workers whose job functions brought them in contact with the hide.
Counts of Salmonella were performed by the most probable number technique on 16 articles of abattoir equipment having direct contact with the carcase. Forty samples were collected from each article over 21 months. The contamination rate of these articles with salmonellae varied from nil % for a saw used to quarter the sides to 47.5% for stainless steel tables and hooks. Mesh gloves were also highly contaminated, salmonellae being isolated from 32.5% of gloves on the slaughter floor and 40% of those in the boning room. Salmonella counts ranged from 1.0 to 3,663 organisms per article. Mesh gloves, cutting boards and stainless steel tables were found to have counts that were at times greater than 1,000 salmonellae per article.
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