بررسی اثرات نعناع ‭(mentha piperitha) ‬در تغذیه طیور گوشتی بر روی عملکرد تولید و کاهش تلفات

In this study in order to determine the effects of using spearmint (mentha piperitha) in the broilers ration 1000 starting chicks in the from of 10 treatments and each treatment with 4 repititions in 40 different boxes were distributed. The chicks of each box were weighted at the beginning of breeding period. The rates of spearmint consumption per ton along with drug and without drug were 1. 5, 3, 4.5 and 6 kgs. All the information regarding the daily numbers of chicks, food consumption per day, mortality, etc. Were recorded. At the end of the starter, grower and finisher periods the chicks of each box were weighted. At the end of each period the information about the average daily gain (ADG), average of daily grain consumption, the coefficient of food conversion and mortality by taking into account the day chickin each box was computed. At the end of breeding period above information in the form of factorial test was analysed by base design of the accident alcomplete blocks with statistical plan M- stat- c. The results, showed that from daily gain, food conversion coefficient and mortality viewpoint between different treatments and witness treatment and in addition anong some treatments with each other the 0.5 level variance was meaning fill.