Investigation of microbiological contamination on turkey farms
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ABSTRACT:
An outbreak of diseases on any poultry farm can cause loss of turkeys for sale, production losses, and extra expenses for veterinary service, quarantine, and (or) costs of sanitation and disinfection. Assessment of microbiological risk is now a key feature of food management. Adequate microclimate in the living area of turkey is essential to their welfare and performance.
In 2002-2003 the investigation carried out at the Institute of Animal Science of Lithuanian Veterinary Academy, at the Department of Animal Hygiene and Ecology and on the two turkey farms. Many cultures of fungi and bacteria were isolated from different substrates on turkey farms: indoor air, litter (straw and peat), water and feed. The average concentration of molds propagules was four times less (P<0.05) on the farm with straw litter compared with the farm with peat litter. Micromycetes of 37 species were identified. The results showed that micromycetes species of genera Aspergillus, Fusarium, Penicillium, Alternaria and Mucor were the most frequent in all the substrates of turkey farms. Aspergillus was the most numerous genus of the dominant group (40.5%).
Airborne pathogens are more difficult to prevent since poultry do need ventilation to reduce humidity, ammonia, dust and heat.
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