تأثير الإجهاد الحراري و إضافة فيتامين (C)‎ في بعض مؤشرات الدم عند طيور الفري الياباني

الملخص EN

This study was conducted at Gharabo farm, Fac.

Agric.

Damascus Universityin order to determine the effect of heat sress and level of vit.

C on the blood indicators of of Japanese quailc A total of 252 females Chicks were distributed randomly into two groups (G and G2) at one day of age, The chicks in G1were subjected to an ideal temperature required according to their age up to 30 days old, while the chicks in G2 were subjected to heat stress at 42 °C during the daytime from 8 am to 5 pm and to ideal temperature from 5pm to 8am for the same period of rearing.

Chicks of each group were distributed into three subgroups given three levels of vitamin C: 0, 10 and20 g/l, with three replicates for each sub-group during the rearing period.

Blood samples were collected from eighteen birds selected randomly from each group.

Results indicated that there was a significant increase in both red blood cells and hemoglobin in the stressed group.

When vitamin C was added at a 20 g/l , there was a significant decrease in number of red and white blood cells in the heatstressed group.

The ratio of neutrophils to lymphocytes was significantly higher in heat-stressed group, and the same result was found when vitamin C was added at 10 and 20 g/l.

The number of monocytes and eosinophil was significantly different between heat-stressed and non-stressed groups and also when vitamin C was added at 10 and 20 g/l.