Näita lihtsat nimetuse kirjet

dc.contributor.authorSousa, F.C.
dc.contributor.authorTinôco, I.F.F.
dc.contributor.authorBarbari, M.
dc.contributor.authorBaptista, F.
dc.contributor.authorSouza, C.F.
dc.contributor.authorSaraz, A. O.
dc.contributor.authorCoelho, D.J.R.
dc.contributor.authorSilva, A.L.
dc.date.accessioned2018-04-12T10:37:54Z
dc.date.available2018-04-12T10:37:54Z
dc.date.issued2018
dc.identifier.publicationAgronomy Research, 2018, vol. 16, no. 2, pp. 582-592eng
dc.identifier.issn1406-894X
dc.identifier.urihttp://hdl.handle.net/10492/3890
dc.identifier.urihttp://dx.doi.org/10.15159/ar.18.070
dc.descriptionArticleeng
dc.description.abstractThe objective of this study was to evaluate air quality of industrial farms of broilers production, located at Zona da Mata region, Minas Gerais , Brazil. The environmental air quality was evaluated during the last rearing week, between 35 and 42 days of life of broilers. Facilities with beds constituted by two types of substrates were evaluated: coffee husks (6 reuse cycles) and shavings (4 reuse cycles). A total of 30 facilities (3 per each of the 10 reuse cycles) were investigated. Air quality was diagnosed by determining air temperature and relative humidity and by ammonia and carbon dioxide concentrations. Air temperature and relative humidity were not affected by reuse cycles in coffee husks bed, but these variables were affected by reuse cycles in shavings bed. Ammonia and carbon dioxide concentrations increased linearly according to the reuse cycles for both types of bed. The maximum concentr ations of ammonia and carbon dioxide were 25 ppm and 1,348 ppm in facilities with bedding of coffee husks and 10 ppm and 1,075 ppm in facilities with bedding of shavings, respectively. Air quality of facilities using coffee husk bed tends to be worse when compared to facilities using shavings bed due to the higher values of ammonia and carbon dioxide concentrations, as observed in this study. In conclusion, regardless bedding type, increases in reuse cycles tend to decrease air quality inside the facility, since a linear increasing in ammonia and carbon dioxide concentrations can be observed in relation to the number of bed reuse cycles.eng
dc.subjectair pollutantseng
dc.subjectair qualityeng
dc.subjectgas concentrationeng
dc.subjectlivestockeng
dc.subjectpoultryeng
dc.subjectarticleseng
dc.titleDiagnosis of air quality in broilers production facilities in hot climateseng
dc.typeArticleeng
dc.rights.holderCopyright 2009 by Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestry. No part of this publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, incl. photocopying, electronic recording, or otherwise without the prior written permission from the Estonian University of Life Sciences, Latvia University of Agriculture, Aleksandras Stulginskis University, Lithuanian Research Centre for Agriculture and Forestryeng


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Näita lihtsat nimetuse kirjet


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