[Rectal prolapse].

A variety of pathogenetic mechanisms underly rectal prolapse. Treatment is predominantly operative. Some of the basic surgical techniques are reviewed.

[Effect of the E-50 Biostimulant on sperm production in young bulls].

The Biostimulant E-50 preparation, a biogenic stumulant, was applied to 8 bulls divided into two groups--with normal and with disturbed semen production (lower qualitative indices of semen and higher number of discarded ejaculates). The stimulant was injected muscularly at the rate of 40 cu. cm, twice, at a seven-day interval, with one of the bulls it being used in a second series.