The influence of long term sound stress on histological structure of broiler's adrenal glands
2011
Žikić, D., Faculty of Agriculture, Novi Sad (Serbia) | Ušćebrka, G., Faculty of Agriculture, Novi Sad (Serbia) | Gledić, D., Faculty of Veterinary Medicine, Belgrade (Serbia) | Lazarević, M., Faculty of Veterinary Medicine, Belgrade (Serbia) | Stojanović, S., Faculty of Agriculture, Novi Sad (Serbia) | Kanački, Z., Faculty of Agriculture, Novi Sad (Serbia)
The aim of this paper is to examine the effect of different sound stress duration on adrenal gland of broiler chickens of different age. The experiments were conducted on 90 HYBRO broiler chickens, divided into nine groups (each group consisting of 10 birds) by different age and lenght of sound stress duration. The chickens were exposed to sound stress in sound attenuated building using a fire alarm bell (95 dB) for stress sessions lasted 120 min every day. The histological structure of adrenal gland was analyzed by light microscopy. The results indicate that adrenal gland is sensitive on this kind of stress and sound as stressor could introduce organism in stress reaction. Adrenal glands of broilers exposed to sound stress characterized by marked hyperemia, hypertrophy of interrenal cells, smaller affinity for staining of chromaffin cells compared with control groups. According to our results, degree of histological changes of adrenal gland under the influence of sound stress depends on the length of exposure and age of chickens.
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