Contraceptive Strategies for Female Cattle: Efficacy and Zootechnical Aspects.

Unwanted pregnancies at the slaughterhouse are a recurring problem globally, compromising ethical aspects and animal welfare, and causing production losses. This review explores contraceptive strategies for female cattle, focusing on both management practices and suppression of the estrous cycle and/or fertilisation. Contraceptive techniques such as surgical castration, emasculation of the ovaries with rubber rings, intrauterine devices (IUDs), GnRH agonist implants, and immunocastration are discussed.