title: Current Status of Parasite Control at the Feed Yard.
abstract: Fly and louse infestations are readily discerned and remedied in feedlot cattle. Tapeworm and fluke infections are accepted as probable but, given the lack of anthelmintics with realistic efficacy against these infections, these helminths are allowed to persist without treatment. Nematode infections are considered ubiquitous with cattle coming from pasture and are targeted with a macrocyclic lactone, usually in combination with a benzimidazole. Populations of nematodes seem to be effectively controlled by a combination of anthelmintic treatment, animal resistance and resilience, lack of reinfection, and diet.
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA. Electronic address: yazwinsk@uark.edu.
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Yazwinski
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA.
authors.forename: Chris A
authors.initials: CA
authors.lastname: Tucker
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Powell
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA.
authors.forename: Paul
authors.initials: P
authors.lastname: Beck
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA.
authors.forename: Eva
authors.initials: E
authors.lastname: Wray
authors.affiliation: Department of Animal Sciences, University of Arkansas, B110D, Fayetteville, AR 72701, USA.
authors.forename: Christine
authors.initials: C
authors.lastname: Weingartz
mesh_terms: D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D000871:Anthelmintics / Q000008:administration & dosage; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology* / Q000517:prevention & control*; D005260:Female; D009348:Nematoda / Q000302:isolation & purification; D009349:Nematode Infections / Q000517:prevention & control / Q000662:veterinary*
chemical_list: D000871:Anthelmintics
keywords: Anthelmintics; Feedlot cattle; Nematodes; Parasites; Receiving