This document discusses integrated farming systems. It defines an integrated farming system as a set of agricultural activities that preserves land productivity, environmental quality, and biological diversity while maintaining ecological stability. An integrated farming system combines various enterprises like cropping, dairy, poultry, fishery, and beekeeping so their products and wastes are used as inputs for other enterprises. The objectives are to identify existing farming systems, formulate models for different situations, optimize resource use through recycling, maintain sustainable production without harming resources, and increase overall farm profitability. Factors that affect integrated farming systems include soil/climate, available resources, current resource use, economics, and managerial skills.