STUDIES ON THE BIONOMICS AND CONTROL OF THE BURSATE NEMATODES OF HORSES AND SHEEP: III. FURTHER OBSERVATIONS ON THE TOXICITY OF URINE AND SOME RELATED SUBSTANCES FOR SCLEROSTOME LARVAE IN FECES

Abstract

Comparative tests with cow urine show that there is considerable variation in its lethal effect on horse sclerostome larvae in manure. Urine gradually loses its lethal power over a period of months and is useless after a year. Tests on urines of various farm animals are also recorded, as well as on fluid from byres and manure heaps. The chemical composition of urine is discussed and tests with ammonia and acetone on larvae are described.