Dystocia due to Unilateral Shoulder Flexion with Downward Deviation of Head in Ewe - ACase Report

摘要

The present paper puts on record a case of dystocia in ewe attributable to fetal maldisposition and its successful per-vaginal delivery through obstetrical maneuvers has been reported.Fetal maldisposition (especially lateral deviation of the head) and obstruction of the birth canal (especially failure of cervix to dilate) are common causes of dystoci; in sheep (Blackmore, 1960; Thomas, 1990; Purohit, 2006). Fetal maldisposition is oneof the major causes of dystocia in sheep (Blackmore, 1960; Thomas, 1990) accounting for more than half of the dystocia cases. Out of the various maldispositions, anterior presentation of the fetus (Majeed and Taha, 1995) with lateral deviation of the head and neck, and flexion of the carpus and shoulder is common in sheep (Jackson, 1995). The incidence of postural abnormalities has been reported between 63 to 69 % in sheep and goat (Sharma et al. 1999; Purohit et al. 2006). Lateral deviation of the head and flexion of carpal and shoulder joints followed by relative fetal oversize are commonly occurring fetal causes of dystocia in both sheep and goats (Purohit, 2006). Per-vaginal delivery with the help of obstetrical manoeuvres like mutation and forced extraction is preferred to economize the treatment cost of the farmers by avoiding the caesarian operation. The present communication reports a case of dystocia in ewes due to fetal maldisposition along with its successful management.