in this experiment, the influence of prebiotic and probiotic supplementation in the broiler breeder diets on body weight, mortality, feed intake, egg production, hatchability and humoral immunity response was investigated. a total number of 13140 female and 1260 male breeders (cobb 500) with 26 wks of age were allocated to three treatments with six replicates (800 birds each replicate). breeder...

the aims of this study were the comparative study of probiotic, acidifier,antibiotic growth promoters and prebiotic on activity of humoral immune and performance parameters of broiler chickens.500 one day old male broilers (308 ross strain) were divided into 5 groups: a, b, c, d and e. each group with equal numbers of male included 4 replicates (25 chicks per replicate). group a was as control ...

The problems of salmonella zoonosis and antibiotic resistance leading to drop in productivity and performance in poultry and the negative effects on public health is persistent especially in third world countries. This study was designed to evaluate the performance and physiological responses of Salmonella enteritidis challenged broilers fed diets containing antibiotic, probiotic and aromabioti...

background probiotics are thought to interfere with the mechanisms involving in the pathogenesis of necrotizing enterocolitis in neonates. objectives this study was planned to assess the effect of prophylactic probiotics for the prevention of necrotizing enterocolitis in low birth weight neonates. patients and methods this prospective triple-blinded, interventional, randomized clinical trial en...

this experiment was conducted to investigate the effect of antibiotic, organic acid, probiotic and prebiotic on quality traits of eggs, egg yolk lipids and blood metabolites of laying hens strain hy-line (w-36). the experiment was carried out as a completely randomized design from 32 to 42 weeks of age with 5 treatments, 4 replicates and 8 hens in each replicate. the experimental treatments con...

this experiment was conducted to evaluate the effects of different levels of crude protein and probiotic in diets on performance, egg quality  and blood biochemical and immunity parameters of laying hens. a completely randomized design with factorial method (2×4) was conducted in which two levels of crude protein (nrc and 10% lower than nrc recommendation) and 4 levels of probiotic (0, .025%, 0...