Effects of deslorelin implants on ovarian cysts in guinea pigs

摘要

Ovarian cysts are one of the most common gynaecological diseases in female guinea pigs. Prevalence in literature is different and varies between 30% (Sommerey et al., 2004) and 90 % (Hamel, 2002). Proof and size of cysts are significantly correlated with increasing age of the animals (Sommery et al, 2004). The etiology of the formation of the cysts in female guinea pigs is unknown, although several theories exsit. Beregi et al. (1999) and Hamel (2002) observed an increased incidence in animals kept alone. Besides, the uptake of estrogenic substances is thought to be a risk for the development of ovarian cysts (Quesen-berry, 2004). Sommerey et al. (2004) showed that the incidence of cysts is also increased in obese animals, whereas Shi (2002) reported that hormonal imbalances, namely defects in inhibin-FSH regulation, are responsible for cyst development.