Effect on performance of chicken with different concentrations of CO₂ in henhouse.

摘要

Performance of chicken with different concentrations of CO₂ in the henhouse was studied on three hundred and twenty 21-day-old Ai Weiyin broiler chickens, randomly divided into 5 groups with different CO₂ concentration (3,000 ppm, 5,000 ppm, 8,000 ppm, 12,000 ppm and 15,000 ppm). Production performance was detected. There was no significant difference on performance below 12,000 ppm groups of CO₂ concentrations, but the chicken daily weight gain was significantly lower and the feed gain ratio significantly higher in more than 12,000 ppm of CO₂ group. It significantly affected the performance of chicken when the concentrations of CO₂ were above 12,000 ppm. The concentration of CO₂ in the henhouse should be less than 12,000 ppm for good performance.