Clinicopathological studies on riboflavin as immunostimulant in broilers

الملخص EN

One hundred and twenty birds from native breed chickens, one day age, divided into 6 groups, each group contain 20 birds .

G (I): Non infected non treated control group which fed on normal ration.

G (II): The infected non treated group which infected with1ml of 1x 108 CFU E.coli O78/bird at first day of age.

G (III): The infected treated group-low dose of vitamin B2 (riboflavin) at dosage 7.2 mg/kg diet from day of infection till the end of experiment.

G (IV): The infected treated group-high dose of vitamin B2, at dosage 10.8 mg/ kg diet from day of infection till the end of experiment.

G (V): None infected treated - low dose 7.2 mg/kg diet group which received vitamin B2 all over the time of experiment.

G (VI): Non infected non treated group - high dose 10.8 mg/kg diet which received vitamin B2 all over the time of experiment.

Blood samples were collected at 7th, 14th and 21th days post clinical infection for Hematological, Biochemical and immunological studies: interleukin- 1?.The obtained results were tabulated and discussed A trial was made to examine obligate anaerobically different samples from diseased as well as apparently normal ducks (120) and geese (120) at one day old and 45 days old to investigate the clostridial microorganisms.

There are variation in the occurrence of clostridium species isolated from apparently normal and diseased ducks and geese at one day old which was lower than that of 45 days old.

Meanwhile the rate of clostridium species isolated from liver, intestine, kidneys and spleen of apparently normal at one day old and 45 days old were lower than that of diseased one.

Among apparently nor¬mal and diseased ducks at one day old and 45 days old examined C.

perfringens was the most predominant species then C.

sporogenes then C.

sordellii but in geese C.

perfringens was the most predominant species then C.

sordellii then C.

sporogenes.

On typing of C.

perfringens isolated from examined ducks and geese, type A was the most prevalent fol¬lowed by type D and then type C.

In mean time type A and D were isolated from ap¬parently normal and diseased ducks and geese while type C was isolated only from diseased.

There is sensitivity variation of isolated strains against the examined chemotherapeutic agents; chloramphenicol was the best while streptomycin, sulphonamides and tetracycline were the lowest.