Feeding rates affect heat shock protein levels in liver of larval white sturgeon (Acipenser transmontanus)
Identifieur interne : 000A27 ( Main/Merge ); précédent : 000A26; suivant : 000A28Feeding rates affect heat shock protein levels in liver of larval white sturgeon (Acipenser transmontanus)
Auteurs : Dong-Fang Deng [États-Unis] ; CHUNFANG WANG [République populaire de Chine] ; Seunghyung Lee [Corée du Sud] ; SUNGCHUL BAI [Corée du Sud] ; Silas S. O. Hung [États-Unis]Source :
- Aquaculture : (Amsterdam) [ 0044-8486 ] ; 2009.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Ratio, Aquiculture.
English descriptors
- KwdEn :
Abstract
A two-week trial was conducted to study the effect of feeding rates on heat shock protein levels in larval white sturgeon. The larvae (30 day post hatch, 230 mg initial body weight) were fed a commercial feed (12.6% moisture, 49.5% crude protein, 20.7% crude fat, and 8.6% ash) at 5, 15, or 25% body weight per day (BW d-1). Liver heat shock proteins (Hsp) were measured before and after the larvae were subjected to a heat shock from 18 to 26 °C at 1 °C/15 min and maintained at 26 °C for 4 h thereafter. Before heat shock, larvae fed 5% BW d-1 had significantly (P<0.05) lower final body weight, RNA/DNA ratio, whole body lipid and protein content, and Hsp60 and Hsp70 levels but higher protein efficiency ratio, and whole body moisture content than larvae fed the two higher feeding rates. Heat shock significantly induced Hsp60 and Hsp70 levels in the liver of all fish but they were lower in larvae fed the 5% than those fed 15 and 25% BW d-1. Hsp70 level increased much more than Hsp60 after the heat shock suggesting that Hsp70 is a more sensitive biomarker under our experimental conditions.
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Hung</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Animal Science, University of California, One Shields Ave</s1><s2>Davis, CA 95616-8521</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Californie</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Aquaculture : (Amsterdam)</title><title level="j" type="abbreviated">Aquaculture : (Amst.)</title><idno type="ISSN">0044-8486</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acipenser transmontanus</term><term>Aquaculture</term><term>DNA</term><term>Feeding</term><term>Growth</term><term>Heat shock protein</term><term>Larva</term><term>Liver</term><term>Performance</term><term>RNA</term><term>Ratio</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Alimentation</term><term>Protéine choc thermique</term><term>Foie</term><term>Larve</term><term>Croissance</term><term>Performance</term><term>RNA</term><term>DNA</term><term>Ratio</term><term>Aquiculture</term><term>Acipenser transmontanus</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Ratio</term><term>Aquiculture</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">A two-week trial was conducted to study the effect of feeding rates on heat shock protein levels in larval white sturgeon. The larvae (30 day post hatch, 230 mg initial body weight) were fed a commercial feed (12.6% moisture, 49.5% crude protein, 20.7% crude fat, and 8.6% ash) at 5, 15, or 25% body weight per day (BW d<sup>-1</sup>). Liver heat shock proteins (Hsp) were measured before and after the larvae were subjected to a heat shock from 18 to 26 °C at 1 °C/15 min and maintained at 26 °C for 4 h thereafter. Before heat shock, larvae fed 5% BW d<sup>-1</sup> had significantly (P<0.05) lower final body weight, RNA/DNA ratio, whole body lipid and protein content, and Hsp60 and Hsp70 levels but higher protein efficiency ratio, and whole body moisture content than larvae fed the two higher feeding rates. Heat shock significantly induced Hsp60 and Hsp70 levels in the liver of all fish but they were lower in larvae fed the 5% than those fed 15 and 25% BW d<sup>-1</sup>. Hsp70 level increased much more than Hsp60 after the heat shock suggesting that Hsp70 is a more sensitive biomarker under our experimental conditions.</div></front></TEI><affiliations><list><country><li>Corée du Sud</li><li>République populaire de Chine</li><li>États-Unis</li></country><region><li>Californie</li></region></list><tree><country name="États-Unis"><region name="Californie"><name sortKey="Deng, Dong Fang" sort="Deng, Dong Fang" uniqKey="Deng D" first="Dong-Fang" last="Deng">Dong-Fang Deng</name></region><name sortKey="Hung, Silas S O" sort="Hung, Silas S O" uniqKey="Hung S" first="Silas S. O." last="Hung">Silas S. O. Hung</name></country><country name="République populaire de Chine"><noRegion><name sortKey="Chunfang Wang" sort="Chunfang Wang" uniqKey="Chunfang Wang" last="Chunfang Wang">CHUNFANG WANG</name></noRegion></country><country name="Corée du Sud"><noRegion><name sortKey="Lee, Seunghyung" sort="Lee, Seunghyung" uniqKey="Lee S" first="Seunghyung" last="Lee">Seunghyung Lee</name></noRegion><name sortKey="Sungchul Bai" sort="Sungchul Bai" uniqKey="Sungchul Bai" last="Sungchul Bai">SUNGCHUL BAI</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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