W.L. Flowers, Enhancement of Fertility With A.I.: Effect of Oxytocin as a Pre-Breeding Stimuli, http://www.cals.ncsu.edu/an.sub.- sci/ann.sub.- rep94/wlflo89.html, Sep. 15, 1999. |
Hog Slat, Inc. catalog, Winter 1999, p. 48, The Breed'n Buddy. |
Minitube of America, 1997/98, Artificial Insemination of Swine, pp. 16 & 17, A History of Research and Development, The Most Advanced Catheters Available Today. |
PIC USA, The 6 Habits of Highly Effective Inseminators. |
Pig Improvement Company, Inc., The Swine AI Book, Chapter 6: The Femal Reproductive System, Chapter 7: How to Artificially Inseminate the Sow. |