Acclimation to Heat During Incubation: 3. Body Weight, Cloacal Temperatures, and Blood Acid-Base Balance in Broilers Exposed to Daily High Temperatures

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dc.contributor.authorYalcin, S.
dc.contributor.authorCabuk, M.
dc.contributor.authorBruggeman, V.
dc.contributor.authorBabacanoglu, E.
dc.contributor.authorBuyse, J.
dc.contributor.authorDecuypere, E.
dc.contributor.authorSiegel, P. B.
dc.date.accessioned2019-10-27T20:22:45Z
dc.date.available2019-10-27T20:22:45Z
dc.date.issued2008
dc.departmentEge Üniversitesien_US
dc.description.abstractThe aim of the present study was to investigate the effects of parental age and heat acclimation during incubation on BW, cloacal temperature, and blood acid-base balance in fast-growing broilers exposed to daily cyclic high ambient temperatures from 21 to 42 d posthatch. Eggs obtained from 32- (younger), 42- (middle-aged), and 65-wk-old (older) breeders were divided into 2 groups. One group of eggs was incubated at the control incubation temperature (IT(CONT)) and the second group was heat acclimated at 38.5 degrees C for 6 h/d from d 10 to 18 of incubation (IT(HA)). Chicks were reared at standard brooding temperatures from d 1 to 21. From d 21 to 42, half of the broilers per incubation temperature and parental age were kept as controls (AT(CONT)) and the other half were exposed to daily cyclic heat treatment (AT(HIGH)) to impose a stress response. The reduction in BW at AT(HIGH) was more pronounced for progeny from older compared with younger parents. However, this reduction in BW was more or less abolished for broilers from eggs incubated at IT(HIGH), implying an increased tolerance to heat stress. Compared with IT(CONT), IT(HA) reduced BW of broilers from 32- and 42-wk-old parents while having no effect on those from 65-wk-old parents when reared at AT(CONT). Higher blood pH, and lower partial pressure CO(2) and HCO(3)(-) at AT(HIGH) were associated with greater cloacal temperatures throughout the heat stress from d 21 to 42. Increases in cloacal temperature by AT(HIGH) were greater for IT(CONT) than for IT(HA) broilers. The AT(HIGH) and IT(HA) broilers had lesser blood partial pressure CO2 concentrations than AT(CONT) and IT(CONT), respectively. Although at AT(HIGH), blood HCO(3)(-) was lower for broilers from all parental ages, it was more pronounced for those from 65-wk-old parents. It is concluded that these changes in blood acid-base balance reflected adaptive responses to heat stress, and incubating eggs at IT(HA) improved thermotolerance of fast-growing broilers.en_US
dc.description.sponsorshipTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [155 O 044]; Ege University Scientific ResearchEge University [2005 ZRF 039]en_US
dc.description.sponsorshipThis research was supported by TUBITAK (Project no. 155 O 044) and Ege University Scientific Research Projects (Project no. 2005 ZRF 039). Veerle Bruggeman is a postdoctoral fellow of the F. W. O.-Vlaanderen (Belgium).en_US
dc.identifier.doi10.3382/ps.2008-00164en_US
dc.identifier.endpage2677en_US
dc.identifier.issn0032-5791
dc.identifier.issue12en_US
dc.identifier.pmid19038825en_US
dc.identifier.startpage2671en_US
dc.identifier.urihttps://doi.org/10.3382/ps.2008-00164
dc.identifier.urihttps://hdl.handle.net/11454/41939
dc.identifier.volume87en_US
dc.identifier.wosWOS:000261601300030en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherPoultry Science Assoc Incen_US
dc.relation.ispartofPoultry Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectparental ageen_US
dc.subjectheat acclimationen_US
dc.subjectbroiler growthen_US
dc.subjectblood acid-base balanceen_US
dc.subjectcloacal temperatureen_US
dc.titleAcclimation to Heat During Incubation: 3. Body Weight, Cloacal Temperatures, and Blood Acid-Base Balance in Broilers Exposed to Daily High Temperaturesen_US
dc.typeArticleen_US

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