Poultry raising on perforeted plastic floor and this effect on the concentration of ammonia and carbon dioxide in facilities kept in thermal comfort temperature

It is known that the poultry litter plays an extremely important role in the creation of broiler chickens, accounting for various factors such as thermal insulation in the installation and absorption of urate and feces. The big problem is that with the growth of agricultural activity, we started to have a shortage of poultry litter material, and hence the increase in the price of it. That sense it started to reuse the poultry litter for several breeding cycles, aiming to reduce the production costs of birds. It was generated a great ambience problem, since several studies show that the reuse of the poultry litter tends to enhance the negative effects of ammonia and carbon dioxide in the facilities, causing a worsening of welfare for animals and people they work in this environment. That sense we conducted this work in order to study the effect of substitution of poultry litter by perforated plastic floor, similar to that used in pig breeding on improving the environment for broilers. The experiment was conducted in climatic chambers, in the poultry sector of Unesp / Jaboticabal. 196 animals were housed in a chamber with the use of wood shavings, 196 animals in the chamber with use of perforated plastic floor. The animals were raised for 42 days in thermal comfort, receiving food and water ad libitum. The measurement of gas concentrations was performed with the aid of a gas sampling pump dragger acuro, with the colorimetric tube coupling, so was carried out measurement of the concentration of ammonia and carbon dioxide in the height of the centre of mass of birds. From the 28th day of creation, the concentration of ammonia increased significantly in the environment with wood shavings, due to the accumulation and decomposition of waste in the environment, while the plastic floor the concentration of this gas remained almost nil, because was removed the waste over the production cycle, reaching a maximum value of 2 ppm to 42 days, significantly less than that raised in the wood shavings (25ppm). The dioxide carbon concentration also showed a gradual growth behaviour, according to the days. The perforated plastic floor It was effective in improving air quality in the facility.