| This study was conducted to determine the economical efficiency and economic return of using a cheap alternative diets. Different levels of yellow corn cobs treated with molasses (30,40,50 and 60%) with different levels of urea (0,1,2 and 3%) on fattening of Awassi lambs . Estimated production function was used to determine the best level of production and investment rate of return at dinar in the diets are also calculated . Simple Regression model was used to estimate the weight gain response to feed consumption . The results that :- Achieved value by second group was 15.25 Kg animal , whereas first , third , and fourth groups were 13.60 , 14.55 and 13.50 Kg animal , respectively . The weight increasing had achieved economic profit were 31213 , 34962 , 34119 and 32188 dinar to the animals groups 1,2,3 and 4 respectively .In conclusion the using 40% of corn cobs which treated by molasses with 1% urea in fattening lambs ration represents the best production level in this study . |