Book excerpt: In the past decade, a number of advances have been made in genetic engineering as applied to farmed animals. This book has been developed from invited presentations at a conference held in California in August 1997, to address this issue. It is written by representatives from the leading laboratories involved in attempts to improve agriculturally important mammals, poultry and fish. Current knowledge, methodology, technical improvements and successes in the applications of transgenic technology to a range of animals which are important in agriculture are brought together for the first time under one cover. This book is essential reading for research workers in animal genetics, breeding and biotechnology.