Abstract:Desinfecção com amônia quaternária associada à fermentação não potencializa o controle de coccidiose em cama de frango.Ciência Rural, v.43, n.8, ago, 2013.
“…Three articles submitted the animals to a sanitary challenge, before evaluating the conditioner used in the treatment of the litter. Thus, [25], [26] and [27], were excluded from the meta-analysis for challenging animals with Escherichia coli, coccidiosis and ammonia, respectively.…”
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.
“…Three articles submitted the animals to a sanitary challenge, before evaluating the conditioner used in the treatment of the litter. Thus, [25], [26] and [27], were excluded from the meta-analysis for challenging animals with Escherichia coli, coccidiosis and ammonia, respectively.…”
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.
“…Na avicultura industrial, a contaminação ambiental e a reinfecção das aves estão intimamente ligadas à alta densidade populacional e ao curto ciclo produtivo (Assis et al, 2013). A cama de frango consiste na mistura de excretas com material absorvente utilizado como substrato que recebe e absorve a umidade das fezes, penas e restos de alimentos, auxiliando também na redução das oscilações de temperatura no aviário (Gewehr, 2003).…”
Objetivou-se avaliar a carga parasitária da cama de frango de uma granja avícola localizada no município de Paço do Lumiar-MA. Foram coletadas 50 amostras de cama de frango de 10 galpões. Essa cama já havia sido utilizada seis vezes nos lotes anteriores. Para as análises parasitológicas foram utilizados os métodos de Sedimentação Espontânea, Método de Sheather, Esporulação para diagnóstico de oocistos de coccídios. Foram identificados ovos de nematódeos dos gêneros Strongyloides (72%), Heterakis (18%) e Ascaridia (10%). As larvas as do gênero Strongyloides destacaram-se como as mais prevalentes, com frequência de 97% de casos, seguido geohelmintos (3%). Encontrou-se 1200 oocistos de Eimeria, no estágio de esporulação. Foram encontrados também ácaros e cascudinhos (Alphitobius diaperinus). Conclui-se que a alta frequência de parasitos presentes na cama de frango pode estar relacionada à falha de manejo.
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