Efficacy of levonorgestrel when administered as an irradiated, slow-release injectable matrix for feline contraception

• Published in: Zoo biology Vol. 20; no. 5; pp. 407 - 421
• Main Authors: Looper, Sheri, Anderson, Gary, Sun, Yichun, Shukla, Atul, Lasley, Bill
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 2001
• Subjects: cat; estrogen; pregnancy; progesterone

Reliable and safe methods of reversible contraception are needed for use in zoo felids. The efficacy of levonorgestrel (LNG) as a contraceptive, when delivered as a cesium‐irradiated, slow‐release, injectable matrix, was tested in domestic cats as a model for exotic cats. An increase (P = 0.0017) in...