Alternative Livestock

Alpacas and Llamas

Llamas and Alpacas - Rutgers University Extension
Alpacas Facts - Phil Switzer
Rocky Mountain Llama and Alpaca Association - the site includes a library with an extensive list of available resources. 
Caring for Llamas and Alpacas is an excellent reference and can be ordered.  The Larimer County Cooperative Extension office owns a copy that you may review.
Alpaca Owners and Breeders Association

Bison

Bison Production - Pennsylvania State University
Buffalo - North Dakota State University
Center for Bison Studies - Montana State University

Elk

Elk Production - Pennsylvania State University
Elk - North Dakota State University

Emus and Ostriches

Nutrition Guidelines for Ostriches and Emus - Iowa State University
Agricultural Alternatives - Pennsylvania State University
The Oklahoma State Ostrich Book
Ostrich, Emu and Rhea Production - Rutgers University (PDF)
Emu Production - Texas A&M
Ostrich Production - Texas A&M
Ostriches On Line
American Emu Association
Ratite Bibliography and Database - lists of references

General Information

Exotic Livestock - A Small-Scale Agriculture Alternative - Univ. of California Small Farm Center