The aim of this project is to know the effect on the physiological performance, after adding the different types of probiotics with different concentrations to the quail diets. One hundred and fifty oneday-old quail birds were used in the study, divided into five groups, each group having 30 bird and 3 replications. The experiment extended from one day old to 42 days from its start. The control group was not supplemented with probiotic, while the other groups 2, 3,4 and 5 were fed a basic diet to which the Saccharomyces group was feed on standard ration fortified with Saccharomyces cerevisiae, Lactobacillus group was feed on standard ration fortified with Lactobacillus acidophilus , Bifidobactrium group was feed on standard ration fortified with Bifidobacterium bifidum and Mix probiotics group was feed on standard ration fortified with mixture of above probiotics was added respectively. Cellular characteristics of blood (RBC, Hb and PCV%) and biochemical parameters(Albumin, Globulin, Glucose, Cholesterol, AST, ALT, MCHC, MCH and ALP concentration)in blood was recorded. The results showed non-significant difference among groups and between the intervals in total count of RBC for all studied group. Otherwise, elevation in Hb concentration for the groups treated with probiotic compared with control group that fed on standard ration without adding probiotics for the two intervals period (30 and 45), Whereas, MCV values appeared significantly higher during the period of 30 day of experiment in control and sarco groups than lacto, bifido and mix probiotic groups. While the 45-day period of experiment showed non-significant difference among the groups of the study. The results recorded significant elevation in ALT activity for both control and sacro groups compared with other treatment of the study in 30 day intervals. the fifth group was alone significant in the depth of the crypts compared with other treatment of the study. So, the ratio of length of villus and depth of crypts showed significant increase for mix probiotic group compared with other studied groups. While, control and sacro groups appeared significantly less the other studied groups of the birds.

Blood, Quails, Probiotic