The effects of vitamin C and E supplementation on heat shock protein70 response of ovary and brain in heat-stressed quail
author: Prof. Nurhan Sahin nsahin@firat.edu.tr Elazig Turkey; Dr. Mehmet Tuzcu mtuzcu23@yahoo.com Elazig Turkey; Dr. cemal orhan corhan1@yahoo.com Elazig Turkey; Mr. Muhittin Onderci monderci@yahoo.com Elazig Turkey; Dr. Yesari Eroksuz yeroksuz23@yhaoo.com Elazig Turkey; Prof. Kazim Sahin nsahinkm@yahoo.com ksahin@firat.edu.tr Firat University Veterinary Faculty Department of Animal Nutrition Elazig Turkey 23100
language: en

Abstract

The effects of vitamins C and E supplementation on egg production and Hsp70 response of ovary and brain in the Japanese quail were evaluated. The birds were randomly assigned to 18 groups consisting of 3 replicates of 10 birds each in a 2 x 3 x 3 factorial arrangement of treatments. Birds were kept in a temperature-controlled room at either 22 oC (Thermo-neutral, TN) or 34 oC (Heat stress, HS) for 8 h /d and fed a basal diet or the basal diet supplemented with either three levels of vitamin C (0, 250 and 500 mg of L-ascorbic acid/kg of diet) or three levels of vitamin E (0, 250 and 500 mg of dl-&#61537;-tocopheryl acetate / kg of diet). Feed intakeand egg production were increased with the vitamin C or E supplementation both alone and in combination in heat-stressed groups for quail. Heat exposure increased serum corticosterone levels and Hsp70 expression. Serum corticosterone level was significantly decreased by vitamin C or E (supplementation in HS groups for quail. Ovary and brain Hsp70 expression linearly decreased as dietary vitamin C or vitamin E supplementation increased in heat-stressed groups. However, Hsp70 expression of ovary and brain was not affected by vitamin C -and E -supplemented to the quail reared under thermoneutral conditions. Results of the present study show that a combination of dietary vitamin C and E supplementation may alleviate some heat stress-related deleterious in heat shock proteins of ovary and brain of Japanese quail.