Treatment of broiler litter with organic acids.
Experiments for treatment of contaminated broiler litter with citric, tartaric and salicylic acids were performed. At days 2 and 6 after the treatment, pH values (using a pH-meter), the ammonia concentrations (titration with 0.1 N HCl) and the microbial cells counts were determined in both experimental and control specimens of litter. The cost of acidification of litter was also determined. Our studies showed that the treatment of the contaminated litter with 5 per cent citric acid, 4 per cent tartaric acid and 1.5 per cent salicylic acid created an acid medium with pH under 5.0 and thus reduced the microbial counts to 2.2 x 10(3)colony forming units per gram manure litter. The treatment reduced the content of ammonia in the litter and in the air under the hygienic limits, i.e. 25-50 ppm. The cost of acidification of litter with these organic acids amounted to 0.1 $ per bird and 1.5 $ per 15 birds on one square metre in a growth period of 50 days.
Ivanov
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Department of Epizootology and Infectious Diseases, Faculty of Veterinary Medicine, Thracian University, 6000 Stara Zagora, Bulgaria. Sivanov@mbox.digsys.bg
D000641:Ammonia / Q000032:analysis; D000822:Animal Husbandry / Q000191:economics / Q000379:methods; D000818:Animals; D002264:Carboxylic Acids / Q000737:chemistry*; D002645:Chickens; D019343:Citric Acid / Q000737:chemistry; D015169:Colony Count, Microbial; D004926:Escherichia coli / Q000254:growth & development; D006863:Hydrogen-Ion Concentration; D008372:Manure / Q000032:analysis* / Q000382:microbiology*; D020156:Salicylic Acid / Q000737:chemistry; D012477:Salmonella enteritidis / Q000254:growth & development; D013644:Tartrates / Q000737:chemistry
D002264:Carboxylic Acids; D008372:Manure; D013644:Tartrates; D019343:Citric Acid; D000641:Ammonia; D020156:Salicylic Acid; C029768:tartaric acid