فهرست نشریات علمی دسترسی آزاد ایران

Many natural phytobiotics of medicinal herbs possess antibiotic and radical scavenger properties for poultry species as nutritional additives. A bioassay study was conducted to evaluate the potential effects of Salvia mirzayanii Rech.f. & Esfand. (SM) on some physiological responses in broiler chickens including adaptive immune responses, blood parameters, and meat quality. A total of 200, one-day-old broiler chicks received five experimental diets containing 0.0, 0.25, 0.50, 0.75, and 1.0% SM in diet for a 42 d assay. Consumption of 0.50% and 0.75% of SM, were able to produce higher antibodies against sheep red blood cells and the Newcastle disease virus (P ≤ 0.05). A substantial increase was observed in antibody titers against bronchitis virus in birds fed SM compared to those birds not receiving SM (P ≤ 0.05). Using 0.50% SM in the diet increased skin thickness after dinitrochlorobenzene challenge (P ≤ 0.05). The use of 0.50% SM in the diet increased the relative weight of the bursa of Fabricius (P ≤ 0.05). The blood concentration of triglyceride, cholesterol, total protein, and albumin was maximized using SM in diet, while blood glucose decreased by increasing dietary levels of SM (P ≤ 0.05). Meat malondialdehyde concentration has been minimized at 0.25%, 0.50% and 0.75% SM in diet (P ≤ 0.05). In conclusion, SM consumption did not have a positive effect on the growth performance of broilers, but the use of its proper level in the diet improved the humoral and cellular immune responses, as well as meat quality.