Determination of Animal Unit equivalent (AUE) for Zandi Sheep breed in Lar Area

Information on animal requirements for rangeland grazing capacity is essential. Therefor, animal unit equivalent (AUE) of each breed should be determined independently. In this study, at first, 3 flocks were selected in Lar region (Down Alarm) which were Zandi breed, and 70 head of animal were chosen from every flock, including, 20 head of 3-year-old ewes, 20 head of 4-year-old ewes, 5 head of 3-year-old rams, 5 head of 4-year-old rams, 10 head of 3-mounth-old lambs, 10 head of 6-mounth lambs. Then during 2 stages, beging and end of grazing season of rangeland they were weighted. By using of average weight of 3 and4-year-old ewes, the animal unit's weight of this spieces was estimated about 54.28kg. In this study, animal unit of ram, 3 and 6-mouth-old lambs, related to determinated weight, was assigned 1.23, 0.68, 0.86, of animal unit respectively. The results showed that in beging and end of grazing season as well as the mean of the three flocks weight at the beging and end of grazing season are significantly (P< 5%) different.