الفهرس 
Primary or natural antioxidantsOnly 14 pages are availabe for public view
 |  | from | 149 |  |  |
| | | from | 149 | | |
Abstract
The present study was carried out at Dep. of poultry and fish
production, faculty of Agriculture, Shibin El-kom, Menoufia University.
The experiment was conducted from February 2017 until June 2018. The
experiment was designed to study the relationship between the immune
response to sheep red blood cells and the activity of some endogenous
antioxidant enzymes on some physiological and productive traits in Norfa
chickens.
In this experiment, 75 chickens of the Norfa strain were used in the
immune response test. Chicken was injected with 0.1 cm sheep red blood
cells. A serum sample was withdrawn from each chicken after 7 days of
injection with sheep blood cells (SRBC). High immunity, low immunity
group, and control group were determined.
The results were discussed and summarized in the following points:
1- The relationship between immune response to SRBC and
endogenous antioxidant enzymes in Norfa chickens:
1-1-The highest activity of the catalase enzyme was found in the low
immunity group (647.490 ± 29.613). The lowest activity of the catalase
enzyme (CAT) was in the high immunity group (321.539 ± 12.183), while
control group was medium between the two groups (399.218 ± 6.439).
1-2- The highest activity of the superoxide dismutase (SOD) was
found in the low immunity group (636.358 ± 6.565) and the lowest activity
of the (SOD) enzyme was found in the high immunity group
(355.193 ± 32.311), while the control group was moderate between the two
groups (544.750 ± 5.320).
1-3- When analyzing the results of oxidative stress (malondialdehyde)
for the three Norfa chicken groups.