Effect Of Adding Different Levels Of Soluble Iraqi Probiotic On Production Performance Of Broiler Chickens

Abstract

This study was carried out at the poultry farm of Animal production department , College of Agriculture , University of Tikrit during the period from (6.10.2011) to (10/11/2011) in order to identify the effect of addition of three different levels of (Iraqi Soluble Probiotic) to drinking water on production performance of Broiler chickens (Ross 308) . A total of four hundred and forty , one-day-old broilers (Ross 308) were randomly assigned to four treatments with three replicates of forty chicks . the treatments were as follows:- Treatment one (control treatment): The birds were given normal drinking water free of any addition , while in second , third and fourth Treatment (0.5 , 1 , 1.5 gm probiotic per one liter of drinking water) were add consecutively . The results showed that Treatments (four , third) improved significantly (P<0.05) compared to second treatment in live body weight at fifth week of age . Treatment three improved significantly (P<0.05) in weight gain compared to treatment two at the fourth week of age while treatment three , four improved significantly in total weight gain (1-5 week) compared to treatment two . Treatment (four) improved significantly (P<0.05) in feed conversation ratio at the second week of age compared to control treatment .