Quality of poultry litter submitted to different treatments in five consecutive flocks

Revista Brasileira de Zootecnia

Fernando Carlos Loch²  Maria Cristina De Oliveira¹  Dionatan Da Silva²  Bruno Nunes Gonçalves¹  Bruno Fernandes De Faria²  June Faria Scherrer Menezes¹ 

[1],Universidade de Rio VerdeRio Verde GO

关键词: acidifiers;    ammonia volatilization;    conditioners;    acidificantes;    condicionadores;    volatilização de amônia;   

DOI  :  10.1590/S1516-35982011000500013

来源: SciELO

【 摘 要 】

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

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