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Year :	2004
Tome :	155
Volume :	6
Pages :	339-342
Title :	Effects of Dietary Vitamin C Supplementation on Some Serum Biochemical Parameters of Laying Japanese Quails Exposed To Heat Stress (34.8°C)
Authors :	K. SEYREK, C. YENISEY, M. SERTER, F. KARGIN KIRAL, P. A. ULUTAS and H.-E. BARDAKCIOGLU
Summary :	This experiment was conducted to evaluate the effects of vitamin C (L-ascorbic acid) on some biochemical serum parameters such as albumin, globulin, creatinine, cholesterol, VLDL, calcium, triglyceride, glucose concentrations and alkaline phosphatase (ALP) activity. Forty eight laying Japanese quails were divided into four groups and exposed to heat stress (34.8 ± 1.25°C) for 75 days. Animals in control group were fed with a basal diet, whereas experimental animals were fed with a basal diet supplemented with either 150, 250, 500 mg of L-ascorbic acid/kg of diet. Compared to controls, the serum concentrations of cholesterol, VLDL, triglyceride and the ALP activity in birds supplemented with vitamin C decreased significantly (p<0.01, p<0.001 for cholesterol), whereas albumin concentrations showed significant (p<0.01) elevations. Serum concentrations of creatinine, globuline, calcium and glucose were not statistically significantly altered. On the other hand, the variations of serum biochemical marker concentrations or activities were not correlated with the dietary vitamin C doses. As a consequence, dietary vitamin C supplementation reduces the biochemical adverse effects of heat stress on laying Japanese quails. Furthermore, 150 mg vitamin C/kg diet would be enough to prevent the damaging effects of heat stress on laying Japanese quails.
Keywords :	heat stress - vitamin C - Japanese quail - biochemistry - serum.
Correspondence :	Dr. Kamil SEYREK
Adress :	Departement of Biochemistry, Faculty of Veterinary Medicine, University of Adnan Menderes, Aydin, TURKEY. E-mail:[email protected]
Link :	pdf

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