Efeito da aplicação de bissulfato de sódio sobre cama de frangos na sobrevivência de Escherichia coli e coliformes

The choice of the most suitable litter treatment should be based on scientific evidence. This systematic review assessed the effectiveness of litter treatments on ammonia concentration, pH, moisture and pathogenic microbiota of the litter and their effects on body weight, feed intake, feed conversion and mortality of broilers. Methods The systematic literature search was conducted using PubMed (Medline), Google Scholar, ScienceDirect and Scielo databases to retrieve articles published from January 1998 to august 2019. Means, standard deviations and sample sizes were extracted from each study. The response variables were analyzed using the mean difference (MD) or standardized mean difference (SMD), (litter treatment minus control group). All variables were analyzed using random effects meta-analyses. Results Subgroup meta-analysis revealed that acidifiers reduce pH (P<0.001), moisture (P = 0.002) ammonia (P = 0.011) and pathogenic microbiota (P <0.001) of the litter and improves the weight gain (P = 0.019) and decreases the mortality rate of broilers (P<0.001) when compared with controls. Gypsum had a positive effect on ammonia reduction (P = 0.012) and improved feed conversion (P = 0.023). Alkalizing agents raise the pH (P = 0.035), worsen feed conversion (P<0.001), increase the mortality rate (P <0.001), decrease the moisture content (P<0.001) and reduce the pathogenic microbiota of the litter (P<0.001) once compared to controls. Superphosphate and adsorbents reduce, respectively, pH (P<0.001) and moisture (P = 0.007) of the litter compared to control groups.

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An assessment of the impacts of litter treatments on the litter quality and broiler performance: A systematic review and meta-analysis

Toledo

Roll

Rutz

et al. 2020

PLoS ONE

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Efeito da aplicação de bissulfato de sódio sobre cama de frangos na sobrevivência de Escherichia coli e coliformes

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An assessment of the impacts of litter treatments on the litter quality and broiler performance: A systematic review and meta-analysis

An assessment of the impacts of litter treatments on the litter quality and broiler performance: A systematic review and meta-analysis

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