Inseminação artificial e acompanhamento da gestação em uma cadela da raça Bull Terrier com histórico de agressividade: relato de caso

Abstract

The objective of this work was to report an artificial insemination (AI) and subsequent gestational follow - up perfor-med on a Bull Terrier bitch with a history of aggressiveness. A 14-month-old Bull Terrier was received with apparent signs of estrus, which showed aggression and intolerance to the approach of the male in the natural mating, and AI was suggested. Vaginal cytology confirmed the estrus phase, with more than 80% of anucleated keratinized cells. The semen of the male donor was collected by digital manipulation and later analyzed, presenting quality in all sperm parameters evaluated. Intravaginal artificial insemination was performed with fresh semen, and the same procedure was repeated 48 hours after a second vaginal cytology confirming that the animal was still in estrus. This repetition of AI was designed to better cover the duration of estrus, thus increasing the chance of breeding. After 51 days of the last AI, an ultrasonography was performed to confirm gestation. It was possible to observe the presence of live fetuses, whose viability was confirmed by the presence of heart beats between 230 and 257 bpm. The birthing occurred 58 days after the last insemination, lasting approximately eight hours and birth of five pups, all alive and healthy. It was possible to conclude that AI after confirmation of estrus by vaginal cytology and gestational monitoring are important tools of reproduction biotechnology capable of providing the use of animals in reproductive activity in cases where natural reproduction is not possible.