Diurnal ammoniaandureaexcretionratesinEuropeanseabass, Dicentrarchuslabrax fed dietscontainingmixturesofcanolaandcotton seed oilattwodifferentambienttemperature

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Yazarlar	Engin, Kenan
Kurum Dışı Yazarlar	O.Tufan Eroldoğan Ilgın Özşahinoğlu H. Asuman Yılmaz Pınar Mumoğullarında
Tek Biçim Adres (URI)	https://hdl.handle.net/20.500.14114/6004
Yayın Türü	Makale
Yayın Yılı	2013
Yayıncı	Elsevier
Dergi Adı	Journal ofThermal Biology
Konu Başlıkları	Fish oil Replacement Canola oil Cottonseed oil Ammonia Urea Excretion Dicentrarchus labrax
İndekslenen Platformlar	Science Direct

The knowledgeaboutthecombinedeffectsofhighertemperatureanddietarynutrientqualityonthe diurnal nitrogenousexcretionratesisverylimitedinfarmed fish speciesincludingEuropeanseabass. Thereforethisstudyinvestigatedthecombinedeffectsofincreasinglevels(30vs.60%)ofdietary fish oil replacement byequalmixtureofcottonseedoil(CSO)andcanolaoils(CO)andtwodifferentambient temperature(24vs.30 1C) ondiurnaltotalammoniaandUrea–N excretionratesinEuropeanseabass (Dicentrarchuslabrax). Experimentaldietswerefedto fish threetimes(08:30–13:30–18:30h)ata fixed rateof3%BW.d1. Thedailyconsumednitrogenandenergyintakeof fish weresimilarduringthe investigationindifferentdietarytreatments.However,thedailyexcretionratesofTAN,totalnitrogen (TANþUrea–N) andtotalnitrogenexpressedasaproportionofconsumednitrogenbytheEuropeansea bass maintainedat30 1C werefoundtobesignificantly (Po0.001)higher(40to50%)than fish maintained at24 1C inallthedietarytreatmentssuggestinghigherratesofdeaminationofingested amino acidswithincreasedtemperature.Dailyurea–nitrogenexcretionof fish accountedforbetween 20–30 %oftotalammonia–nitrogenexcretionratesforeachdietarytreatmentat24and30 1C and appeared tobeslightlyincreasedbythetemperaturebutneitherthetemperaturenortheamountof plant oilmixtureinclusionindietsortheinteractionofthesetwofactorshadasignificant effectonthe urea nitrogenexcretionratesof fish indifferentdietarytreatments.However,Urea–N excretionratesin fish fed fish oilonly(FO)dietweresignificantly higher(Po0.05) comparedtothatof fish feddiets containing increasingamountofplantoilmixture(VOM30andVOM60)duringthelight-onphaseofthe sampling periodat24 1C indicatingperiodicenhancementofpermeabilityforureaatexcretionsites. Further researchisneededinordertoelucidatethemechanismofnitrogenousexcretioninEuropeansea bass fedplantoilcontainingdietsunderextremesummertimetemperaturesemployingtotaldietary fish oil replacementtorevealthepossibleeffectsofalterationincellmembranephospholipidcompositionon enzymes responsiblefornitrogenousexcretionand/ordetoxification.

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Eser Adı dc.title	Diurnal ammoniaandureaexcretionratesinEuropeanseabass, Dicentrarchuslabrax fed dietscontainingmixturesofcanolaandcotton seed oilattwodifferentambienttemperature
Yazarlar dc.contributor.author	Engin, Kenan
Kurum Dışı Yazarlar dc.contributor.other	O.Tufan Eroldoğan
Kurum Dışı Yazarlar dc.contributor.other	Ilgın Özşahinoğlu
Kurum Dışı Yazarlar dc.contributor.other	H. Asuman Yılmaz
Kurum Dışı Yazarlar dc.contributor.other	Pınar Mumoğullarında
Yayıncı dc.publisher	Elsevier
Yayın Türü dc.type	Makale
Özet dc.description.abstract	The knowledgeaboutthecombinedeffectsofhighertemperatureanddietarynutrientqualityonthe diurnal nitrogenousexcretionratesisverylimitedinfarmed fish speciesincludingEuropeanseabass. Thereforethisstudyinvestigatedthecombinedeffectsofincreasinglevels(30vs.60%)ofdietary fish oil replacement byequalmixtureofcottonseedoil(CSO)andcanolaoils(CO)andtwodifferentambient temperature(24vs.30 1C) ondiurnaltotalammoniaandUrea–N excretionratesinEuropeanseabass (Dicentrarchuslabrax). Experimentaldietswerefedto fish threetimes(08:30–13:30–18:30h)ata fixed rateof3%BW.d1. Thedailyconsumednitrogenandenergyintakeof fish weresimilarduringthe investigationindifferentdietarytreatments.However,thedailyexcretionratesofTAN,totalnitrogen (TANþUrea–N) andtotalnitrogenexpressedasaproportionofconsumednitrogenbytheEuropeansea bass maintainedat30 1C werefoundtobesignificantly (Po0.001)higher(40to50%)than fish maintained at24 1C inallthedietarytreatmentssuggestinghigherratesofdeaminationofingested amino acidswithincreasedtemperature.Dailyurea–nitrogenexcretionof fish accountedforbetween 20–30 %oftotalammonia–nitrogenexcretionratesforeachdietarytreatmentat24and30 1C and appeared tobeslightlyincreasedbythetemperaturebutneitherthetemperaturenortheamountof plant oilmixtureinclusionindietsortheinteractionofthesetwofactorshadasignificant effectonthe urea nitrogenexcretionratesof fish indifferentdietarytreatments.However,Urea–N excretionratesin fish fed fish oilonly(FO)dietweresignificantly higher(Po0.05) comparedtothatof fish feddiets containing increasingamountofplantoilmixture(VOM30andVOM60)duringthelight-onphaseofthe sampling periodat24 1C indicatingperiodicenhancementofpermeabilityforureaatexcretionsites. Further researchisneededinordertoelucidatethemechanismofnitrogenousexcretioninEuropeansea bass fedplantoilcontainingdietsunderextremesummertimetemperaturesemployingtotaldietary fish oil replacementtorevealthepossibleeffectsofalterationincellmembranephospholipidcompositionon enzymes responsiblefornitrogenousexcretionand/ordetoxification.
Kayıt Giriş Tarihi dc.date.accessioned	2024-04-02
Yayın Yılı dc.date.issued	2013
Açık Erișim Tarihi dc.date.available	2024-04-02
Dil dc.language.iso	eng
Konu Başlıkları dc.subject	Fish oil
Konu Başlıkları dc.subject	Replacement Canola oil
Konu Başlıkları dc.subject	Cottonseed oil Ammonia
Konu Başlıkları dc.subject	Urea Excretion Dicentrarchus labrax
ISSN dc.identifier.issn	0306-4565
İlk Sayfa dc.identifier.startpage	588
Son Sayfa dc.identifier.endpage	596
Makale Numarası dc.identifier.articlenumber	Grafik ve Tablo
Dergi Adı dc.relation.journal	Journal ofThermal Biology
Dergi Sayısı dc.identifier.issue	38
Tek Biçim Adres (URI) dc.identifier.uri	https://hdl.handle.net/20.500.14114/6004
İndekslenen Platformlar dc.source.database	Science Direct
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