FAO, 2012. Edited by Harinder P.S. Makkar. FAO, Rome

This publication collates, discusses and summarizes state-of-the-art knowledge on the use as livestock feed and future availability of co-products from the biofuel industry. The levels at which the co-products could be safely used in livestock diets are also presented. Gaps in knowledge and research topics needed to address them have been identified. These include standardization of product quality to assist ration formulation; testing of new products; development of detoxification procedures; research on micro-algae; and life cycle analysis linked to traditional nutritional appraisal.