Effect of breed and management system on the production and anti-bacterial effect of IgY

الملخص EN

The high concentration of immunoglobulin yolk (IgY) found in the egg yolk is the major antibody produced by chickens.

IgY have been applied successfully for scientific, diagnostic purposes and for alternative of mammalian antibodies.

The effect of poultry breed (Hisex, Sudanese Baladi) and management system (Semi-closed and Traditional) on the production and antibacterial effect of IgY was investigated.

The IgY concentration was determined by modification of polyethylene glycol method (PEG).

The result reveal that, the egg weight (g) and IgY (mg/ml- yolk) were significantly higher in Hisex than Sudanese Baladi.

While the yolk volume (ml) and IgY (mg/g-egg) were significantly lower in Hisex compared to Baladi.

The result also revealed that the bird kept under Semi close produces significantly heavier egg compared to bird kept under Traditional system but significantly lower on IgY (mg/g-egg).

IgY have antibacterial effect against bacteria (E.

coli ,Staphylococcus and Pseudomonas).Irrespective of the breed and management system IgY showed antibacterial (E.

coli, Staphylococcus and Pseudomonas) effect.