Effects of soybean meal processing method on the broiler immune system [Soya küspesi i̇şleme metodunun broyler i̇mmun sistemine etkisi]

Various methods of processing soybean meal were evaluated for their effects on the immune system parameters of broilers in a completely randomized design. the experiment was carried out in 200 male ross broilers,grouped as quadruple. soybean meal in the chicken feed was prepared by five different processes; i.e. raw soybean meal,autoclaved (121°c) for 20 min,autoclaved for 30 min,microwaved at 46°c,540 watt for 7 min and baked at 120°c for 20 min. the serum antibody titers of broiler vaccinated against infectious bronchitis was determined at 23 days that against newcastle was done at 27 days,that against gumboro was done at 30 days and that against sheep red blood cells was done at 28 and 42 days. results showed that baked soybean meal could help promoting the broiler serum antibody titers against various vaccines as well as against sheep red blood cells at 28 days (p<0.05).