Effects of the Summer Savory (Satureja hortensis L.) Powder and Extract on the Performance of Male Broiler Chicken

Background: Savory herbs and their active essential oils have been extensively investigated as feed additives and an alternative to the use of antimicrobial agents. The present study aimed to assess their effects on broiler chicken performance. Methods: Dried savory powder (SP) (۱.۰% or ۲.۰%) or savory extract (SE) (۵۰ or ۱۰۰ ppm) was added to the basal starter (until day ۲۲) and grower diets/drinking water, respectively. In total, ۳۰۸ male Ross broilers aged ۲۲۵ days were assigned to four treatment groups and the non-supplemented control group. Results: On day ۴۲, the feed conversion ratio (FCR), improved in the treatment groups (FCR =۱.۶۳ on ۱.۰% SP) compared to the control group (FCR =۱.۸۱±۰.۰۴; P < ۰.۰۰۵), while no such change was observed in the feed intake or daily weight gain. The FCR was similar between the SP and SE at different levels. Conclusion: According to the results, ۱% or ۲% savory powder and ۵۰ or ۱۰۰ ppm of the savory extract as food and drinking water additives could improve the FCR in the ۴۲-day broiler production cycle and could be a proper alternative to commercial essential oils.

کلیدواژه ها:

Body weight ، Broilers ، Feed additives ، Production cycle ، Satureja hortensis