Date of this Version
Martin, H. M. (1931). The common intestinal roundworm of swine (Ascaris lumbricoides) (University of Nebraska Agricultural Experiment Station Circular No. 17 rev.)
The large intestinal roundworm of pigs is a very common parasite, and is probably present in every hog raising district of Nebraska. Until the last few years the true nature of this parasite was unknown. Little did we realize the actual harm done by this worm; but through the scientific investigations of Stewart, Ransom, and others we now know that this parasite causes heavier losses to the breeder and feeder of swine than any other now common in Nebraska.