| The effect of early-age food restriction on heat shock protein 70 response in heat-stressed female broiler chickens. | |
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MedLine Citation:
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PMID: 12003331 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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1. This study was conducted to determine the effect of early-age food restriction on heat shock protein (hsp) 70 synthesis in the brains of female broiler chickens exposed to high ambient temperatures. 2. Chicks were brooded for 3 weeks and then maintained at 24+/-1 degrees C. 3. On d 0, chicks were assigned to one of 4 feeding regimens; each regimen was applied to 4 cages of chicks. The regimens were: (1) ad libitum feeding (AL); (2) 80% food restriction at 4, 5 and 6 d of age (F80); (3) 60% food restriction at 4, 5, and 6 d of age (F60); and (4) 40% food restriction at 4, 5 and 6 d of age (F40). From d 35 to d 41, all chicks were subjected to 38+/-1 degrees C for 2 h/d. 4. One day following food restriction (d 7), hsp 70 expression in the brain samples of F60 and F40 chicks was augmented but not those fed AL and F80. 5. Prior to the heat challenge (d 35), all chicks had similar hsp 70 response. Irrespective of feeding regimen, there was a marked increase in hsp 70 expression after 4 d of heat treatment (d 38). Following 7 d of heat exposure (d 41), except for the F60 chicks, the augmented hsp 70 expression in the brains of AL, F80 and F40 birds was not maintained. 6. Enhancement of hsp 70 expression was noted in birds subjected to F60, but not AL, F80 or F40, throughout the period of heat exposure. |
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Authors:
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I Zulkifli; M T Che Norma; D A Israf; A R Omar |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: British poultry science Volume: 43 ISSN: 0007-1668 ISO Abbreviation: Br. Poult. Sci. Publication Date: 2002 Mar |
Date Detail:
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Created Date: 2002-05-10 Completed Date: 2002-10-22 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 15740290R Medline TA: Br Poult Sci Country: England |
Other Details:
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Languages: eng Pagination: 141-5 Citation Subset: IM |
Affiliation:
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Department of Animal Science, Universiti Putra Malaysia, Serdang, Selangor. zulkifli@agri.upm.edu.my |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Brain Chemistry / physiology* Chickens / physiology* Female Food Deprivation / physiology* HSP70 Heat-Shock Proteins / biosynthesis* Hot Temperature / adverse effects Random Allocation |
| Chemical | |
Reg. No./Substance:
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0/HSP70 Heat-Shock Proteins |
| Comments/Corrections | |
Erratum In:
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Br Poult Sci 2002 May;43(2):327 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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