رهام رحمانی
اسدالله بختیار
غلامرضا سلطانی
منصور زیبایی
محمد مرادیان
اقبال حدائق

Sever range degradation, nutritional animal hubandry problems, livestock production scarcity, Periodical droughts, Soil fertility decline, rapid population growth, Employment Insecurity, and many other factors shows an Immediate necessity to transfer the single systems of crop production of animal husbandry into the integrated crop-livestock-range-systems. Considering that the Fars province of Iran is one of the richest agricultural provinces in the country, a research project was performed to optimize the integrated producing systems using a linear programming model. Also, these systems were compared to the single ones. The province was divided into five climatic regions considering the climatic conditions and yearly mean rainfall to sample. The necessary information were collected through questionnaires and interviews with benefeciaries and goverment officials The results showed that there is no optimal systems in crop production, livestock husbandry, and range management except for the wheat production.