摘要：Dairy farm,which produces calf and milk jointly,is expected to raise households income in rural areas where potential resources are available.This study aims at examing the optimal production of milk and calf by estimating a relationship between both productions.The study was conducted in Sleman,Yogyakartawhere dairy farms exist.Theory used in this study is economies scope in joint production.The results of study indicate that the level of joint production is still low such that there is no degree in economies of scope.Consequently,households income generated from this farm has not been maximised.To increase the income,it can be conducted by two consecutive steps.First,is to increase the production milk and calf jointly until the degree of economies of scope reached.Second,is to produce milk and calf in the best combination after reaching economies of scope.Recently,the best way to maximise income is to produce calf as low as possible,and to increase the period of producing milk.
关键词：Economies scope;product transformation curve;and optimal joint production
