Tunnel Ventilation
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Ammonia emissions in tunnel-ventilated broiler houses
Gas production in broiler houses and their emissions are closely related to the microclimate established inside the house according to air temperature, humidity, and velocity. Therefore, the internal house environment is influenced by building typology and ventilation system. The objective of the present study was to evaluate ammonia emission rates in broile
Revista Brasileira de Ciência Avícola. Publicado em: 2011-12
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14. Desenvolvimento de metodologias para determinação do bem-estar e massa corporal de frangos de corte por meio de análise digital de imagens / Development of methodologies for determination of broiler chicken welfare and body mass by means of digital image analysis
Advances have been made in the field of image processing as a technology for development of a consistent response in relation to new standards in animal welfare. One of the advantages of artificial vision systems in relation to those of human vision is the ability to make exact measurements, based on pixel count. This system also has no influence on animal b
Publicado em: 2009
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15. Evaluation of the environment and the efficiency of acclimatization systems for the industrial turkey production / Avaliação do ambiente e da eficacia de sistemas de climatização para a produção industrial de perus
This research aimed to evaluate the impact of the combination of bioclimatic variables such as: temperature, wind velocity and relative humidity in turkey production, as well as the efficiency of two minimum ventilation systems (positive and negative) for the initial phase ( 1 . 28 days), and three acclimatization systems (positive ventilation I, positive ve
Publicado em: 2007
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16. Modeling and mapping of thermal environment to evaluate the performance of broiler chickens lodged in acclimatized housing / Modelagem e zoneamento do ambiente tÃrmico para avaliar o desempenho de frangos de corte criados em galpÃes climatizados
The objective of this work was to develop and validate a mathematical and computational model to predict thermal environment (air temperature, relative humidity, temperature-humidity index â THI and environmental index for broiler chickens productivity â EPIbc), main physiological responses (skin temperature â TS, rectal temperature â TR and respiratory
Publicado em: 2006
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17. Diagnosis and evaluation of fungi presence in the air of two different ventilation sytems for broiler houses
Intensive broiler production in tropical climates requires adequate air circulation to control heat stress. Excess of air speed may lead to dust production and reduction of air quality and, consequently, production parameters. Brazilian regulations prohibit the presence of pathogens that may deteriorate air quality, and the presence of fungi in the air insid
Revista Brasileira de Ciência Avícola. Publicado em: 2005-12
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18. Evaluation of environmental conditions inside two commercial broiler production housings with distinct ventilation systems and stocking density / Avaliação das condições do ambiente interno em dois galpões de produção comercial de frangos de corte, com ventilação e densidade populacional diferenciados
The main objective of this study was the evaluation of environmental conditions inside two commercial broiler production housings with distinct ventilation and stocking density: conventional housing (G1) with 13 birds/m² and a combination of natural and mechanical ventilation for the growing period, and high density housing (G2) with 18 birds/m² and negati
Publicado em: 2005
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19. Avaliação do controle do ambiente em galpões de frangos de corte criados em alta densidade
This research had the objective to study forced ventilation systems under both the thermodynamic aspect, as well as the broiler performance grown at high flock density. The evaluation was based on the third last weeks of growth prior to slaughter. The experiments were carried out in three stages: the first one consisted in simulating the pou1try housing ther
Publicado em: 2001