THERMAL COMFORT FUZZY INDEX FOR BROILER CHICKENS

dc.creatorDo Nascimento, GR
dc.creatorPereira, DF
dc.creatorNaas, ID
dc.creatorRodrigues, LHA
dc.date2011
dc.dateMAR-APR
dc.date2014-07-30T14:06:08Z
dc.date2015-11-26T16:32:46Z
dc.date2014-07-30T14:06:08Z
dc.date2015-11-26T16:32:46Z
dc.date.accessioned2018-03-28T23:14:18Z
dc.date.available2018-03-28T23:14:18Z
dc.identifierEngenharia Agricola. Soc Brasil Engenharia Agricola, v. 31, n. 2, n. 219, n. 229, 2011.
dc.identifier1809-4430
dc.identifierWOS:000290630300002
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57991
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57991
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1270626
dc.descriptionEstimating thermal comfort in modern poultry production is important that acclimatization systems can be triggered at appropriate time reducing losses and increasing yield. Although current literature presents some thermal comfort indexes which are applied for this estimation those are based just on ambient thermal conditions and do not consider important factors inherent to the animals such as genetics and capability of adaptation, generally providing an inadequate estimation of the birds' thermal comfort. This research developed the Fuzzy thermal comfort index (FTCI) aiming to estimate broilers' thermal comfort considering that the mechanism used by the birds for losing heat in environments outside the thermoneutral zone is the peripheral vasodilatation, which increases the surface temperature. Measurements of surface feathers and skin temperature of birds were used. The FTCI was developed using the data of two experiments which provided 108 distinct environmental scenarios. Infrared thermal images were used for registering surface temperature of feathers and skin, as well as the birds' feathering degree. For the same scenarios of thermal environment both FTCI and the temperature and humidity index (THI) were compared. Results validated the FTCI for estimating broilers' thermal comfort, being specific for the estimation of danger conditions usually found in housing in tropical climate countries. This characteristic is advantageous in models which estimate broiler thermal welfare, as occurrence classified as dangerous may lead to economical downward in avoiding productive losses.
dc.description31
dc.description2
dc.description219
dc.description229
dc.languagept
dc.publisherSoc Brasil Engenharia Agricola
dc.publisherJaboticabal
dc.publisherEspanha
dc.relationEngenharia Agricola
dc.relationEng. Agric.
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectthermal comfort index
dc.subjectfuzzy logic
dc.subjectinfrared thermograph
dc.subjectprecision livestock production
dc.subjectSensible Heat-loss
dc.subjectControl-systems
dc.subjectTemperature
dc.subjectVentilation
dc.subjectBreeders
dc.subjectSkin
dc.titleTHERMAL COMFORT FUZZY INDEX FOR BROILER CHICKENS
dc.typeArtículos de revistas


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