title: Degree-day concept in development of infective larvae of Haemonchus contortus and Trichostrongylus colubriformis under constant and cyclic conditions.
mesh_terms: D000818:Animals; D006189:Haemonchus / Q000254:growth & development*; D006813:Humidity; D013696:Temperature; D014251:Trichostrongyloidea / Q000254:growth & development*