this study surveys on the effects of l-lysine and methionon amino acids on growth performance, survival rate and body composition of rainbow trout (oncorhynchus mykiss). fish with initial average weight 105.23 +  6.33 g in 5 treatments fed with different levels of lysine (1 and 3 %) and methionine ( 1 and 2%) for 8 weeks. the results showed that the treatment which fed 2 % methionine had the be...

this experiment was conducted to evaluate and compare antibiotic, organic acid, probiotic and prebiotic effects on performance, egg quality and blood metabolites in commercial laying hens. the experiment was a completely randomized design with 160 laying hens strain hy line (w-36) from 32 to 42 weeks of age with 5 treatments and 4 replicates of 8 hens each. the experimental treatments consisted...

the aim of this study was to investigate the processing methods of sorghum grain and diet formulation on performance and nutrients digestibility in broilers. three hundred and twenty chicks at eight day of age were allotted into eight groups of four replicate with ten chicks per replicate. this research was conducted as completely randomized design arranged in a 2 × 2 × 2 factorial experiment u...

the 24 maltiparous holstein dairy cows were allocated in a completely randomized design to study the effects of different level and source of sulfur supplement in close-up diets on blood metabolites, colostrums composition and liver performance. the mean body weight of the cows was 687.9 kg and the mean days until expected calving date was 21.8 d. the first treatment (t1) has contained 0.21% su...

normal 0 false false false en-us x-none ar-sa back ground: considering the high prevalence of congenital hypothyroidism (ch) in isfahan, the intelligence quotient (iq) of children with ch and the effect of diagnostic and treatment variables on it were investigated during the ch screening program. materials and methods: a total of 120 children in three studied groups were studied in this compara...