Difference between revisions of "Female Reproductive Disorders - Donkey"
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==Reproductive disorders in the female== | ==Reproductive disorders in the female== | ||
Revision as of 12:17, 18 March 2010
Reproductive disorders in the female
Fertility in jennies seems to be higher than in mares. Inbreeding may be an important factor of poor fertility in some isolated herds (Kadir, 1980; Darre et al, 1998). Reported anomalies of reproduction in jennies include persistent corpus luteum, ovarian teratomas, granulosa cell tumours (Norris et al, 1968), uterine infection and uterine fibrosis. Pyometra may be a consequence of severe dystocia.
Donkeys are prone to hyperlipaemia and hepatic lipidosis during pregnancy, often complicated by hepato-encephalopathy, hypocalcaemia, azotaemia, hyponatraemia, hypochloraemia and acidosis (Tarrant et al, 1998). Retained placenta and hypocalcaemia may be seen in stressed animals.
Abortion has been cited as a major problem in working equines (Pearson et al, 2003). Infectious causes of abortion in donkeys are similar to those reported in horses, the most commonly reported being EHV-1 (Tewari et al, 1994), Leptospira (Arora and Baxi, 1978), Streptococcus equi zooepidemicus (Giorgi et al, 1984) and Salmonella spp. (Hofer et al, 2004). Non-infectious abortion due to foetal abnormalities has been described in miniature donkeys (Miller, 1989). Twinning is a cause of non-infectious abortion in some breeds.
References
- Tibary, A., Sghiri, A. & Bakkoury, M. (2008) Reproduction In Svendsen, E.D., Duncan, J. and Hadrill, D. (2008) The Professional Handbook of the Donkey, 4th edition, Whittet Books, Chapter 17
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