OBJECTIVE An experiment was conducted to investigate the effect of dietary Ca concentrations in low non-phytate phosphorus (NPP) diets containing phytase on growth performance, bone mineralization, litter quality, and footpad dermatitis (FPD) incidence in growing broiler chickens. METHODS A total of 1,800 21-day-old Ross 308 growing broiler chickens were allotted to 1 of 6 dietary treatments ...

This research was conducted to determine the effects of supplementation chitosan oligosaccharide (COS) on growth performance, blood parameters, carcass traits, fatty acid composition breast meat, and apparent nutrient digestibility in broiler chickens. A total 375 one-day-old Ross 308 male chicks were allocated a control diet (T1) or diets supplemented with 50 ppm (T2) 100 (T3) COS. There five ...

This experiment was conducted to examine the effect of dietary supplement with green Brazilian propolis on body weight (BW), weight gain (BWG) and cecal microflora in broiler chickens raised under heat stress condition. A total of 504 15-d-old male broiler chickens (Ross 708) were randomly allocated to 6 treatments, each with 4 replicate pens per treatment, 21 chickens per pen from hatch to 42 ...

This experiment was conducted to evaluate the effects of dietary different levels of hatchery wastes (HW) on performance, tibia ash and blood calcium and phosphorus concentrations in broiler chickens. Birds were fed a corn-soybean meal diet for 7 days. The experimental treatments included 3 dietary treatments containing 1.5, 3 and 4.5 percent HW, in addition to the control without hatchery wast...

this study was conducted to investigate the effect of different levels of savory (satureja hortensis) powder and its essential oil on performance and antioxidant status of broiler chickens under heat stress (34±2 ˚c for 8 hours per day). a total of 336 one-day-old male broiler chicks (ross-308) were divided into 6 treatments and 4 replications (14 birds per replicate). experimental diets were a...

this experiment was carried out to evaluate the effect of probiotic supplementation and feed restriction on growth response in broiler chickens. for this purpose, 336 male broiler chickens of ross 308 were used. after housing, broilers allocated to experimental pens in a completely randomized design with factorial 2×3 arrangement. first and second groups considered as positive control group wit...

an experiment was conducted to evaluate the effect of non-starch polysaccharides of barley supplemented with multi-enzyme on growth performance and physiological characteristics of broilers. a total number of 375 one day old ross-308 broiler chickens were allocated randomly to 3 treatments with 5 replicates at 2 rearing period (including 1 to 21 and 22 to 42 days of age) using a crd statistical...

this experiment was conducted to compare the effects of multi-strain probiotic inclusion levels on performance, intestinal morphology, gut microflora and hematological changes in salmonella typhimurium (st) infected broiler chickens. a total of 120 day old ross 308 broiler chickens were distributed into 20 floor pens and reared for 10 days under 5 experimental treatments including a corn-soy ba...

The Effect of Adding Different Levels Valine in Low Protein Diets on Performance, Blood Parameters and Tibial Bone Properties Ross-308 Broiler Chickens from 8-21 Days

in order to evaluate the effect of feeding different levels of vermi-humus supplement (as a source of humic acid) on the performance of broiler chickens an experiment was conducted using 240 broiler chickens (ross 308) in a completely randomized design by four treatments (vermi-humus levels of 0, 0.5, 1 and 1.5 percent) and five replicates of 12 chickens per each for 42 day. the experimental tr...