Dystocia Due to Fetal Ascites in a Graded Murrah Buffalo and Its Obstetrical Management

Abstract

Fetal ascites, an accumulation of free fluid in the abdomen of the unborn calf, is a rare reason for a calving to fail, and what is written about it in buffaloes is mostly anecdotal. This narrative review gathers published literature on dystocia in cattle and buffaloes, on the fetal and placental disorders that can enlarge or distort a fetus, and on the obstetric options usually discussed when a fetus cannot pass the birth canal: manipulation and traction, reduction of fetal bulk, and caesarean section. No individual case is presented here, and none is described or implied; the article is a synthesis of what others have reported. Large cohort work on cattle shows that fetal size relative to the maternal pelvis is a central driver of difficult birth, and reviews of buffalo reproduction supply the species context, but evidence specific to fluid-distended fetuses rests almost entirely on single case reports, which are vulnerable to selective reporting and rarely state outcomes beyond the day of delivery. Choice among obstetric options therefore remains case dependent and turns on fetal viability, the degree of disproportion, the condition of the dam, the facilities at hand and the operator’s skill. The review closes with the points a useful report or registry should record, and with a plea for comparable, openly stated outcomes.