Effect of Using Three Bacterial Isolates of Lactic Acid Bacteria Lactobacillus acidophilus 4453, Bifidobacterium bifidum 5144 and Streptococcus thermophilus 5935 as Probiotics on Thyroid Hormones and Liver Enzymes of Common Carp Fingerlings Cyprinus carpio Linnaeus (1758)

Abstract This study was conducted to evaluate the efficiency of three bacterial isolates Lactobacillus acidophilus 4453, Bifidobacterium bifidum 5144, and Streptococcus thermophilus 5935 on thyroid hormones liver enzymes common carp fingerlings which had initial body weight attained (44±0.69) g. A total 72 fish were used randomly divided into 4 treatments with 3 replicates (6 per replicate). An experimental diet prepared a crude protein (29.14%) gross energy 396.726 kcal / The suspensions at dilution 1*10 -6 cfu/ml added suspension 20% Arabic gum phosphate buffer salt as an enveloping adhesive material cells increase their stability survival feed pellets. liquid specified amounts diets according following (T0 control treatment, T1 T2 T3 5935. Thyroid (TSH, T3, T4) (AST, ALT, ALPA) assessed after 83 days experiment. results statistical analysis showed that all exceeded T0 followed by then T1. As for enzymes, significantly other AST, while there no significant difference among ALT. ALP, whilst lowest recorded mean T3. Here we conclude in food fingerling major role increasing values hormones, this indicates metabolic activities these fish, damage occurred those result use mentioned isolates.