Brucellosis outbreak at a pork processing plant--North Carolina, 1992.
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The supervision programme of the Veterinary Chief Inspectorate of Public Health comprises nearly fifty projects, a number of which are discussed. This will give the authorities an opportunity to gain a more complete view of the state of the human food package, for which inspection of the individual animal in the slaughter-house does not so far offer any practical possibilities. Attention is drawn to the important place occupied by the veterinary nutritionist in the protection of human health.
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Erysipeloid takes the second place after eczema among other occupational diseases at the meat-processing enterprises of Lugansk region. The maximal occurrence is seen at the meat enterprises in summer. The morbidity is promoted by slight traumatism in cold and humid work conditions. Skin and joints are most frequently affected by the disease. One of each four among the sufferers demonstrates the prolonged course with longstanding arthropathies.
The content of albumins, globulin fractions and cholesterol was studied in blood serum of poultry breeders with exogenic allergic alveolitis (EAA) having different service terms. Breeders suffering from EAA with service term of 1-20 years show a decrease in the albumin content and an increase in globulin fractions and cholesterol in blood which may indicate liver disturbances and hypercholesterolemia.
The results of the clinico-epidemiological study of campylobacteriosis in a concrete area (Kiev and the Kiev region) are presented. The proportion of campylobacteriosis cases was found to be 6.4% among patients hospitalized in connection with acute enteric infections. Hens were most frequently the source of human infection. Thus, at the local poultry farm the proportion of hens contaminated with bacteria of the genus Campylobacter was 44.8%. The possible routes of the spread of Campylobacter infection and the factors of its transmission were established. The most important element of the epidemiological marking of Campylobacter bacteria is the determination of their species and serotype.
The authors studied the effects of liquid starter cultures on the survival of pathogenic germs. It was found that the foreign bacteria tested differed in growth limitation which is obviously dependent on acidity and the amount of lactic acid produced by fermentation. Since the pathogenic bacteria differ in the ability to survive, it is imperative to observe strict hygienic measures in preparing starter cultures and to use absolutely sterile monocultures for raw sausage ageing.
Squamous cell carcinoma (SCC) lesions were confirmed by histopathology in 94% of 176 carcasses condemned for SCC during 8-hour shifts at four different processing plants. Lesions in the remaining carcasses were diagnosed as focal ulcerative dermatitis. SCC lesions were confined to the skin; no metastasis or invasion of underlying muscle was present. Monthly prevalence of SCC condemnations at processing was obtained from two plants for a 1-year period and from two additional plants for 3-year periods. Overall study prevalence of SCC varied between 0.03% and 0.09% of total condemnations. Servicemen were found not to have an effect on SCC condemnations for the only company that had these data available. Chronological trends were evaluated for SCC condemnations. A trigonometric model predicted 6-month cycles for one processing plant over a 3-year period. The same model was used to describe 6-month cycles present in the last 12 months of a 3-year observation period in a different processing plant. Chronologic trends were evaluated qualitatively for the two other processing plants.
A meat turkey ranch had a history of producing flocks with low market weights. Live bird samples and environmental samples from the ranch were collected over a period of eight months and analyzed at the California Veterinary Diagnostic Laboratory System-Turlock Branch. The disease condition consistently present was enteritis associated with Ascaridia dissimilis infection in birds from growout houses. After aggressive control measures for A. dissimilis were implemented, subsequent flocks reached expected market weights.
In an experimental study on stunning of 460 turkeys in a CO2 enriched atmosphere (60-70% CO2 in air), as a more animal protecting and more economic alternative to conventional electrical stunning, the following results are obtained: all animals show respiratory arrest within 100 seconds. After being dipped in a CO2 enriched atmosphere for a few seconds the turkeys show head shaking and forced respiration which has to be considered as a strain the animals are conscious of. The meat hygienic results after CO2 stunning are much better than after electrical stunning.
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