effects of dietary supplementation of arginine-silicate- inositol and phytase complex on performance and blood biochemical traits of laying hens

Arginine silicate inositol complex (asi; arg = 49.47%, silicone = 8.2%, inositol = 25%) is a novel, bioavailable source of si and arg and may offer potential benefits for laying hens’ performance. the aim of this study was to evaluate the effect of arginine-silicate and inositol/phytase on the performance of laying hens. a total of 90 laying hens, 25 weeks old, were randomly assigned to 6 treatments with 3 replicates (5 birds per replicate). the treatments were as follows: 1st treatment pc: positive control group (basal diet without additives (, 2nd treatment: basal diet +1000 mg/kg arginine-silicate complex (49.5±8.2 % respectively), 3d treatment: basal diet +1000 mg/kg arginine-silicate- inositol (asi) complex (49.5, 8.2 , 25 % respectively) , 4th treatment: t 2 +500   ftu/kg , 5th treatment: t2 +1000 ftu/kg and 6th treatment :t2+2000   ftu/kg . results indicate a significant increase (p<0.05) in hen house production (h.h. pro.%) of t5 (95.06 %)compared with  t1(91.67%)  and no significant differences between t2, t3, t4, t6 (91.84, 93.21, 93.46, 92.98%) and compared with t1 and t5. were no significant difference observed in average egg weight and egg mass between the experimental treatments all over the period. daily feed intake (dfi) significantly decreased (p<0.05) with supplementing diets with deferent levels of phytase with arginine–silicate mixture t4, t5, andt6 (113.56،113.06، 112.10 g) compared with t1 (114.34 g ) which has no significant differences compared with t2 and t3 (113.96, 113.92 g). phytase supplementation significantly (p<0.05) improved fcr g feed/egg in t5 (119.02)   compared with t1 and t2 (124.89, 124.32), while no significant differences between t3.t4.t6 treatments (122.39, 121.80, 120.69) respectively and compared with other treatments. the experimental treatments observed no significant difference in g feed/ g egg.