It was evaluated the effects of poultry litter treatment on moisture content,pH, density and volatilized ammonia for five consecutive flocks of broiler chickenbreeding. It was used 640 birds per flock as a complete randomized design witheight treatments and four replicates. The treatments were the following: 1 non-treatedlitter; 2 litter submitted to in-house composting; 3 litter treated with aluminumsulfate; 4 litter submitted to gypsum; 5 litter treated with quicklime; 6 littertreated with dolomitic limestone; 7 litter treated with zeolite and 8 littertreated with charcoal. Chopped elephant-grass hay was used as poultry litterin all flocks. Fermentation in the shed increased moisture content of the littersin the second and first flocks on 21 and 42 days of breeding, respectively.There was no difference on density among treatments. Aluminum sulfate reducedpH of the litters in all flocks at 21 days of breding. On 42 days of breeding,pH of the litters was reduced in the litters with aluminum sulfate and gypsumin the first, second and forth flocks. On 21 days, aluminum sulfate reducedthe volatilized ammonia in the first, third and forth flocks, and on 42 days,there was a reduction of volatilized ammonia in the litters with aluminum sulfatein the forth flock. Aluminum sulfate can improve quality of poultry litter ofchopped elephant-grass hay by reducing pH and ammonia volatilization.
