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Ammonia emissions from a naturally and a mechanically ventilated broiler house in Brazil AGRIAMBI
Mendes,Luciano B.; Tinoco,Ilda F. F.; Ogink,Nico W. M.; Rocha,Keller S. O.; Osorio S.,Jairo A.; Santos,Marilú S..
This study was conducted with the aim of monitoring NH3 emissions from a mechanically and a naturally ventilated broiler house (MVB and NVB, respectively) and calculate their ammonia emission factors (fNH3). Bird stocking density was 13.5 and 11.1 birds m-2 for the MVB and NVB, respectively. The marketing age was 43 days and bedding consisted of dried coffee husks in its first time of use. Ventilation rates were calculated with the metabolic carbon dioxide mass balance method. Values of fNH3 were 0.32 ± 0.10 and 0.27 ± 0.07 g bird-1 d-1 for the MVB and NVB, respectively, and are in agreement to what was presented in other studies performed under similar conditions. The fNH3 estimated on yearly basis was 58 g bird-place-1 year-1. It was concluded that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Emission factor; Inventory; Ventilation rate; Tropical conditions.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014001100013
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Thermal environment in two broiler barns during the first three weeks of age AGRIAMBI
H.,Robinson Osorio; Tinoco,Ilda F. F.; Osorio S,Jairo A.; Mendes,Luciano B.; Rocha,Keller S. O.; G.,Lina M. Guerra.
ABSTRACT The objective of this research was to evaluate the internal thermal environment of two broiler barns featuring different ventilation systems representative of Brazilian and South American poultry production industry: (a) a negative-pressure tunnel and (b) a positive-pressure lateral ventilation system. Environmental parameters such as dry bulb temperature, relative humidity and temperature-humidity index were assessed; temperature maps for day and night average conditions were determined for the first three weeks of life. Better uniformity of the thermal environment and comfort conditions inside the negative-pressure tunnel were found.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal comfort; Poultry production; Bioclimatic conditions.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300256
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