Abstract: In order to solve the problem that manure pollution affects the chicken health and contaminates the environment in small- and medium-scale chicken farms, the differences in fermentation temperature and physical and chemical properties of the padding treated with two movable raking devices for fermented mattress were examined. Furthermore, the effects of the application of the two devices on ammonia concentration in chicken houses were assessed. The results showed that the temperature of the fermentation bed treated by the device of DP2016180 was extremely significant （P<0.01） higher compared to that treated by the device of DC2016180 at 600, 1400 and 1900 every day during a continuous observation period of 20 days; there was no significant difference （P>0.05） in total nitrogen, total potassium, total phosphorus, pH value and C∶N between the paddings treated with the two different devices. Extremely significant difference （P<0.01） in ammonia concentration between the chicken houses treated with the two different devices was observed at 6 h, 8 h, 10 h, 12 h, 16 h, 18 h, 20 h, 22 h and 24 h after treatment, significant difference （P<0.05） was observed at 14 h after treatment, and no significant difference （P>0.05） was observed at 2 h and 4 h after treatment. Our results may provide technical support for improving the scientific application level of the padding management device.

Key words: chicken house, padding management device, fermentation temperature, physical and chemical properties, ammonia