A study of some factors influencing fertility and sterility in the bull

This early twentieth‑century thesis dives into the often‑overlooked role of the bull in cattle reproduction. By framing the bull as half the herd, the author stresses how subtle abnormalities and hidden infections can undermine herd fertility. The work blends anatomical insight with practical concerns, setting the stage for a systematic exploration of male reproductive health.

Through laboratory experiments and careful bacteriological analysis, the study evaluates whether bulls transmit genital pathogens that lead to abortion or reduced conception rates. It reviews existing knowledge, presents new data on semen quality and genital tract conditions, and highlights gaps in current veterinary practice. Listeners will gain a clear sense of the scientific challenges and the promise of more precise breeding management. The findings encourage further field studies to confirm how male health impacts overall herd productivity.