title: Interactive effects of dietary copper, water copper, and Eimeria spp. infection on growth, water intake, and plasma and liver copper concentrations of poults.
abstract: The effects of dietary Cu, water Cu, and coccidial infection on poult growth performance and selected tissue mineral concentrations were investigated in a 10-d experiment using 200 5-d-old Nicholas toms (five replicates of 5 poults each; initial weight = 85 g). Uninfected and coccidiosis-infected (Eimeria meleagrimitis, Eimeria dispersa, Eimeria adenoeides, and Eimeria gallopavonis; cocci) poults were assigned to two levels of dietary Cu [Basal (B) and B + 204 mg Cu/kg diet on Days 1 to 10] and two levels of water Cu (0 and 103 mg Cu/kg water on Days 6 to 10). Dietary Cu and water Cu (main effects) did not affect (P > .10) gain, feed intake, gain:feed, water intake, hemoglobin, hematocrit, or liver Fe and Zn concentrations. Dietary Cu and water Cu increased (P < .03) liver and plasma Cu concentrations. The combination of dietary Cu and water Cu increased plasma Cu more than the sum of the Cu additions (dietary Cu by water Cu, P < .08). Coccidial infection reduced (P < .07) gain, feed intake, gain:feed, water intake, and hemoglobin, and increased (P < .02) liver Zn. Water Cu reduced water intake in uninfected poults but increased water intake in coccidiosis-infected poults (water Cu by cocci, P < .07). Water Cu increased hemoglobin in uninfected poults but decreased hemoglobin in coccidiosis-infected poults (water Cu by cocci, P < .07). Water Cu increased plasma Cu and liver Cu more in coccidiosis-infected poults than in uninfected poults (water Cu by cocci, P < .02).(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Department of Animal Science, Louisiana State University Agricultural Center, Baton Rouge 70803-4210, USA.
authors.forename: T L
authors.initials: TL
authors.lastname: Ward
authors.forename: K L
authors.initials: KL
authors.lastname: Watkins
authors.forename: L L
authors.initials: LL
authors.lastname: Southern
mesh_terms: D000818:Animals; D003048:Coccidiosis / Q000097:blood / Q000503:physiopathology / Q000662:veterinary*; D003300:Copper / Q000032:analysis / Q000097:blood / Q000494:pharmacology*; D004326:Drinking; D004435:Eating; D004539:Eimeria; D005527:Food, Fortified; D006454:Hemoglobins / Q000032:analysis; D008099:Liver / Q000737:chemistry; D008297:Male; D011201:Poultry Diseases / Q000097:blood / Q000503:physiopathology*; D014422:Turkeys / Q000097:blood / Q000502:physiology*; D015430:Weight Gain
chemical_list: D006454:Hemoglobins; D003300:Copper