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Registros recuperados: 42
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Aeration frequency on accelerated composting of animal carcasses Ciência e Agrotecnologia
Oliveira,Matias Marchesan de; Coldebella,Arlei; Belli Filho,Paulo; Oliveira,Paulo Armando Victória de.
ABSTRACT Rotary drum reactors (RDRs) for accelerated carcass composting are being installed in animal production units as an alternative for the disposal of pig and poultry carcasses in Brazil. The aim of the present study was to investigate the influence of aeration frequency on gas emissions (CO2-C, CH4-C, NH3-N and N2O-N) during composting of pig and poultry carcasses in RDRs. RDRs with a volume of 3.6 m3 (50% useful volume) were used. Aeration time was 24 minutes. Four intervals between aeration periods were tested (treatments) as follows: 1 hour (T1), 2 hours (T2), 3 hours (T3) and 4 hours (T4). Gas emissions were continuously monitored using a photoacoustic gas monitor (INNOVA 1412). Temperature was monitored using iButtons mixed with the biomass....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rotary drum reactor; Poultry and pig; Gas emission.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000600653
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Egg quality assessment at different storage conditions, seasons and laying hen strains Ciência e Agrotecnologia
Feddern,Vivian; Prá,Marina Celant De; Mores,Rúbia; Nicoloso,Rodrigo da Silveira; Coldebella,Arlei; Abreu,Paulo Giovanni de.
ABSTRACT Eggs are one of nearly perfect protein foods, offering nutrients of great biological value. However, during storage, egg albumen and yolk components may alter and deteriorate egg quality. Therefore, the aim of this work was to assess egg quality during 9-week storage. Parameters such as Haugh unit, weight loss, egg width and length, specific gravity, yolk and albumen dimensions and their pH were evaluated weekly. A total of 270 eggs (n=5) collected from two different hen strains were evaluated under room (20 to 35 °C in summer; 11.2 to 29.7 °C in autumn) and refrigerated (0 to 5 °C in summer; -3.1 to 6.5 °C in autumn) temperatures. For storage time, an unfolding analysis was accomplished by regression analysis using orthogonal polynomials. As a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Weight loss; Shell color; Haugh unit; Yolk index..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000300322
Registros recuperados: 42
Primeira ... 123 ... Última
 

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