Abstract: Microbial mineralization of urea and uric acid in poultry litter results in the production of ammonia, which can lead to decreased poultry performance, malodorous emissions, and loss of poultry litter value as a fertilizer. The experiment was conducted to test the validity of novel amendments to reduce the presence of these ammonia producing microbes and reduce ammonia emissions from poultry houses. The experiment was consisted of 4 treatments x 2 replication, each 150 broiler chicks of both sexes per pen (treatment A: 2% Sodium perborate, treatment B: 2% TiO2 Photocatalyst and treatment D: 2% TiO2 + 0.25 % Paraformaldehyd granules). The results revealed that:1) Sodium perborate treatment reduced the total bacterial population by 2 log within 2 wk and ammonia concentrations were 20,15,18,15,20,25,25 and 20 mg/m3 at 7,14,20,25,30,35,40 and 45 days of the cycle period, respectively 2) TiO2 Photocatalyst of the poultry litter resulted in >2 log decreases in total fungal concentrations, and bacterial decreasing by >3 logs within the first 2 to 3 wk of the litter treatment as well as delayed mineralization events for both uric acid and urea (ammonia concentrations were 15 and 25 mg/m3 at,40 and 45 days ,respectively). 3) Ammonia concentrations in TiO2 + Paraformaldehyde granules treated group were significantly (P< 0.05) lower than in the control and other treated groups. Ammonia concentrations were 10 mg m3 up to 35 days and slightly increased to 15 mg/ m3 up to 45 days of the cycle period.
Keywords: Gas, Broiler Litter, Emission.