Decontamination of broilers with hydrogen peroxide stabilised with glycerol during processing.

Experiments were conducted to assess the effects of different concentrations of hydrogen peroxide stabilised by glycerol solution in potable water on the bacteriological and organoleptic quality of freshly slaughtered broiler carcasses. Skin-pH and colour were measured 3.5 and 24 h after treatment and compared to untreated carcasses. Bacterial colonisation was determined 3.5 and 24 h and, 7 days after treatment, carcasses being stored at 1 degrees C. None of the concentrations used affected the appearance and "bloom" of the carcasses as could be measured by colorimeter and changing of the acidity. Mean microbial counts were significantly reduced (P<0.01) when treated and control broilers were compared. Average reductions of 0.3 up to1.4 log N for the mesophilic aerobic counts were achieved and from 0.4 up to 1.2 log N for Enterobacteriaceae. A 3% w/w solution made from a commercially available stock solution (Glyroxyl), which consists of 44% hydrogen peroxide, 44% demineralised water and 12% glycerol proved to lower colonisation more effectively than a 2% solution.

[From veterinarian to quality control manager. What is going to change in the Netherlands for the practicing large animal veterinarian under influence of the White Paper about food safety?]. / Van dierenarts naar kwaliteitsmanager. Wat gaat er in Nederland voor de praktiserende dierenarts landbouwhuisdieren veranderen onder invloed van het Witboek over de voedselveiligheid?

The work of farm animal practitioners will change in the coming years as a result of the White Paper on food safety. Both government and the Royal Veterinary Association of the Netherlands are working on an accreditation system for veterinarians. The veterinary practitioner is a link in the chain to achieve safe products. Where in the past emphasis was on the individual animal, it will now be on the herd or flock. The veterinarian will officially determine the health status of the farm, which in turn will play a role in the inspection procedures at the slaughterhouse. This form of farm management will become compulsory for all stockholders within the framework of the Veterinary Network for Supervision. In turn, these developments will affect the veterinary medicine curriculum. New subjects such as quality management will become increasingly important.

A Comparative Study Into Procedures for Postmortem Inspection for Finishing Pigs.

A postmortem meat inspection system based primarily on visual inspection without palpation or incision was compared with regular meat inspection procedures based on European Community (EC) regulations, which consists of visual inspection, palpation, and incision of organs. Two experiments included 31,682 finishing pigs. Three inspection procedures were followed: visual, i.e., an inspection without manipulation of the carcass; regular, i.e., based on EC regulations; and extra, i.e., based on EC regulations with more time allowed for the inspection. The reproducibility and accuracy of the visual and regular inspection methods were compared with those of the extra inspection. Twelve postmortem abnormalities and four additional findings were compared. The reproducibility of the visual inspection, measured with Cohen's kappa (CK), was poor to fair (CK from 0.14 to 0.64), and the regular inspection also had a poor to fair reproducibility (CK from 0.24 to 0.73). The specificity and sensitivity of the visual and regular inspection methods did not differ significantly for most of the abnormalities and additional findings. The sensitivity was low (range 0-76%) and the number of false-negative findings was sometimes high. It can be concluded that many abnormalities and additional findings are detected equally well by visual and regular postmortem inspection procedures. It is concluded that since both inspection procedures are far from perfect, risk assessment should be performed.