Effect of exposure to a short-duration sound on the stress response of chickens.
Chickens were subjected to the sound produced by banging on a metal pail (104 decibels) for 30 seconds. Heterophil/lymphocyte (H/L) ratios began to rise 18 hours later, reaching their maximum value (0.62) in 20 hours and returning to pre-stress values after 30 hours. Neither resistance to Escherichia coli challenge infection nor antibody response were altered.
Gross
W B
WB
Department of Large Animal Clinical Science, Virginia-Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg 24061.
D000818:Animals; D000917:Antibody Formation; D002645:Chickens; D006098:Granulocytes; D007958:Leukocyte Count / Q000662:veterinary; D008214:Lymphocytes; D009622:Noise / Q000009:adverse effects*; D011201:Poultry Diseases / Q000209:etiology*; D013312:Stress, Physiological / Q000209:etiology / Q000662:veterinary*; D013997:Time Factors