Factors causing dystocia, their incidence and maternal recovery rates after delivery by various methods in cattle

摘要

Two hundred ninety (290) cases of various reproductive disorders in cattle were reported between Feb. 1996 to July 1999 at Veterinary Clinics of the College. Out of these, one hundred nine (109) i.e. 37 percent were cases of dystocia. Dystocia was caused mostly by prepubic tendon rupture, oversized foctus without gross structural abnormalities, oversized foetus with gross structural abnormalities, uterine torsions and improper dilation of cervix. The incidence of various causes were 3.7 percent, 11.0 percent, 16.5 percent, 56.9 percent and 11.9 percent respectively. Maternal recovery rates after adopting various methods to relieve the dystocia were 88.8 percent, 83.3 percent, 76.34 percent, 76.25 percent and 75 percent in improper dilation of cervix, oversized foetuses without gross structural abnormalities, uterine torsions, oversized foetuses with gross abnormalities and prepubic tendon rupture respectively.