Year: 2003
Type: conference-paper
Abstract: An experiment was conducted to investigate the effects of different coolingsystems on bird thermal comfort, litter moisture content and the performance of broilerbreeders, housed in open facilities at high temperatures conditions in Brazil. The studyused Hubber lineage birds, from 26 to 37 weeks of age, in summer and fall conditions, in theMinas Gerais State, Brazil. Two facilities were used, with similar dimensions andconstruction characteristics, oriented in an east-west direction. Six replicates of six differentsystems of environmental control were evaluated: (fan jet with polytube and evaporativecellulose pad material, FJS; roof sprinkling (exterior), RSS; internal fogging system, IFS; twohorizontal mixing fans directing air into the room, MFS; two roof-top wind-driven turbineventilators, RVS; and a conventional system as the control, CTL, with ventilation providedsolely by wind and no additional cooling. Hatchability, AH, was measured weekly. Resultsdemonstrated that the FJS, IFS and MFS systems, in this sequence, performed best,presenting reduced BGHTI values and improved AH as compared to the other systems. Results obtained from the RVS and the CTL systems were markedly inferior. Litter moisturecontent (MC) was least in the MFS system while greatest in the FJS system.
DOI: 10.13031/2013.14095
Authors: I.F.F.Tinôco, R.S.Gates, A.L.A.Tinôco, F.C.Baêta, P.R.Cecon, H.Xin
Language: English
Subfield: Animal Science and Zoology
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W2127882157