تاثیر روشهای مختلف کوچ بر تغییرات وزن بره های نر و ماده مغانی

one of the most problems In herds of tribals Is lowing weight of sheeps splclally in lambs of Moghanlan breeds during the migration. This study carried out in herds of tribes in moghanian sheeps at Ardebil province. The objective was to study the weight loss of tribals herds of IIsevan tribes at migration. A completelly randomized design was used and the results analyzed from the economic point of view. Treatments: Lon foot migration without any supplemantary feeding .(control group) 2.on foot migration with supplementary feeding 3;00 car migration Wit/10ut supplementary feeding . . 4.00 car migratior with supplementary feeding 5.on car migratior at night (without feeding) This experiment caried out for determine the mean of sheep weight loss at control group and determine the effects of supplementary feeding' and variation of migration at different time at night during the migration Results: 1.Comparison of means for lambs weight loss and each migration systems with LSD test showed .1Ih treatment had significant difference with other. treatments (P O. 05) I however in other treatments there wasnot sJgnificant difference between males and femals (P> O.05) 3.Comparison of treatment from economic point of view about migration systems show that migration on loot with supplemantary feeding economicaly better than others systems. because rate 01 weight loss and expenses (expenses of transporting from summer . quarters to winter - quarters and supplementary leeding ) low in' this method .but in the method the sheep need to compensatory grouth for arising to prior weight that will rise in price,thus 4th system in better system for migration