1, according to the survey, the current market price of live sheep 7.6-8.4 yuan / kg, we calculated at 7.6 yuan / kg, the general lambs born 35-45 days weaning and fattening, fattening 80-90 days, the weight of an average of 50 kilograms. 7.6 yuan × 50 kg = 380 yuan

2, a fat lamb daily cost of less than 0.6 yuan

① daily average hay 1-1.25 kg, an average of 0.2 yuan per kilogram 0.2 yuan × 1.25 kg = 0.25 yuan

② concentrates: rationed according to the cornmeal 49%, 18% wheat bran, 15% soybean cake, miscellaneous grains 13%, 2% salt. Fishmeal 1%, bone meal 1%, vitamins, trace elements 1%, 1.2-1.4 yuan per kilogram, 0.25 kilograms of concentrate required per day, then 0.35 yuan.

③ a lamb needs daily feed input (hay + concentrate): ① + ② = 0.25 yuan + 0.35 yuan = 0.6 yuan 3, a lamb out of the profit of 308 yuan ① a fattened lamb from birth to the cost of the pen: 0.6 yuan × 120 days = 72 yuan ② a lamb's profit is: 380 yuan - 72 yuan = 308 yuan

4, a ewe lambing Annual profit of 1548 yuan

① a ewe average 1.5-1.75 kg of hay per day, 0.25 kg of concentrate, about 0.6-0.7 yuan

② a ewe annual cost of 0.7 yuan × 365 days = 255.5 yuan

③ a ewe per year (including vaccination fees) the total cost of not more than 300 yuan

④ profits is 308 yuan × 6 - 300 yuan = 1848 yuan - 300 yuan = 1548 yuan