1.when the objection of conservation is fixed,the best quantities of male and female is 2m2N-m1m2NNe2m2 and 14m2NNem2(randomselect stud animal)or and(same quantity select stud animal among families).
2.Methods Randomselect 160 example type2 diabetic and divide into four groups by if not have retinopathy or diabetic nephropathy and detect their blood fat,lipoprotein,glycosylated hemoglobin,insulin level and analyze.
3.According to characteristics of credit estimation ,1 choused index and form systems of multilayer index and select combination of Delphi and AHP in order to avoid subjectivity and random for setup in the course of setup of estimation index .