[Clinical and pathologico-anatomic findings in the bovine uterus after cesarean section and their significance for fertility].

From the observations made on a great number of obstetrical operations partly in the blue-white cattle breed either in the clinic or in practice, the indications for caesarean section and the chances for post operative conception are discussed. Despite technically perfect and careful operation, still some complications, e.g.

Aetiology and pathogenesis of congenital torticollis and head scoliosis in the equine foetus.

In 214 cases of severe dystocia in mares, of which 141 (66 per cent) were Draught horses, deviation of the head and neck, with or without torticollis, malformed head and limbs were found to be the cause of dystocia. No evidence of a genetic lethal factor was found and torticollis was often combined with scoliosis of the head and, frequently, with malformation of one or more limbs. This is considered evidence of a common aetiology and pathogenesis of the syndrome of malformation.

Birth of a monozygotic cattle twin following non surgical transfer of a single 7 day old embryo.

A female twin was born after non-surgical transfer of one 7 day old embryo to the uterus of a synchronized receptor heifer. To prove the monozygocity of the twin, the hemotype was analysed (10 blood group systems and the polymorphic blood substances). The complete hemotype was identical in both twin calves.