ABSTRACT
Abstract .................................................................................................................. 336 Introduction ............................................................................................................ 336 Food Animals, their Products, and Sustainable Agroecology ................................ 337
Animal Source Foods in the Twenty-First Century........................................... 337 Actions Needed to Maintain and Protect a Stable Global Environment ........... 338 Importance of Animal Disease Control ............................................................. 338 Recent Improvements in Biological and Economic Efficiency of Food Animals ............................................................................................................. 338
Milk .............................................................................................................. 339 Meat and Fish ............................................................................................... 339
Other Domestic Animals for Food, Fiber, and Hides ........................................340 Small Animals and Birds ..............................................................................340 Aquatic Animals ...........................................................................................340 Large Animals and Birds ..............................................................................340
Vertical Integration of Animal Production Systems ............................................... 341 Land Use and Greenhouse Gas Emissions from Milk and Meat Production .... 341
