1990/07/01 by W. B. Gross
Agricultural and Biological Sciences · Veterinary · #Animal Behavior and Welfare Studies #Animal Nutrition and Physiology #Effects of Environmental Stressors on Livestock
paper · doi:10.2307/1591276
crossref issued 1990/07/01 · crossref published 1990/07/01 · crossref published-print 1990/07/01 · openalex publication_date 1990/07/01 · crossref created 2006/05/06 · crossref deposited 2018/04/18 · openalex created_date 2025/10/10 · crossref indexed 2026/07/30 · openalex updated_date 2026/07/31
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.