Large quantities of animal based raw materials are wasted in the developing
countries; the most important reason for this situation being the absence of
simple, affordable, economically viable and yet dependable technology as to be
suitable under the prevailing conditions in the developing world. The present
book addresses this reality in its entirety. The first publication to make
economic use of animal byproducts for small throughputs was in 1962 by I. Mann.
Nineteen eighty onwards, number of publications have appeared on the subject and
continue to being published till date. The author has attempted to summarise and
update the information of earlier publications and also reproduced some
information