title: Anthelmintic effects of forage chicory (Cichorium intybus) against gastrointestinal nematode parasites in experimentally infected cattle.
abstract: Two experiments studied the effects of dietary chicory against gastrointestinal nematodes in cattle. In Experiment (Exp.) 1, stabled calves were fed chicory silage (CHI1; n = 9) or ryegrass/clover hay (CTL1; n = 6) with balanced protein/energy intakes between groups. After 16 days, all calves received 10 000 Ostertagia ostertagi and 66 000 Cooperia oncophora third-stage larvae (L3) [day (D) 0 post-infection (p.i.)]. In Exp. 2, calves were assigned to pure chicory (CHI2; n=10) or ryegrass/clover (CTL2; n = 10) pastures. After 7 days, animals received 20 000 O. ostertagi L3/calf (D0 p.i.) and were moved regularly preventing pasture-borne infections. Due to poor regrowth of the chicory pasture, CHI2 was supplemented with chicory silage. At D40 p.i. (Exp. 1) and D35 p.i. (Exp. 2) calves were slaughtered for worm recovery. In Exp.1, fecal egg counts (FEC) were similar between groups. However, O. ostertagi counts were significantly reduced in CHI1 by 60% (geometric mean; P < 0·01), whereas C. oncophora burdens were unaffected (P = 0·12). In Exp. 2, FEC were markedly lowered in CHI2 from D22 p.i onwards (P < 0·01). Ostertagia ostertagi adult burdens were significantly reduced in CHI2 by 66% (P < 0·001). Sesquiterpene lactones were identified only in chicory (fresh/silage). Chicory shows promise as an anti-Ostertagia feed for cattle and further studies should investigate its on-farm use.
authors.affiliation: Section for Bacteriology, Pathology and Parasitology,National Veterinary Institute,Technical University of Denmark,Bülowsvej 27,1870 Frederiksberg C,Denmark.
authors.forename: Miguel
authors.initials: M
authors.lastname: Peña-Espinoza
authors.affiliation: Section for Parasitology and Aquatic Diseases,Department of Veterinary Disease Biology,Faculty of Health and Medical Sciences,University of Copenhagen,Dyrlægevej 100,1870 Frederiksberg C,Denmark.
authors.forename: Stig M
authors.initials: SM
authors.lastname: Thamsborg
authors.affiliation: Section for Parasitology and Aquatic Diseases,Department of Veterinary Disease Biology,Faculty of Health and Medical Sciences,University of Copenhagen,Dyrlægevej 100,1870 Frederiksberg C,Denmark.
authors.forename: Olivier
authors.initials: O
authors.lastname: Desrues
authors.affiliation: Section for Parasitology and Aquatic Diseases,Department of Veterinary Disease Biology,Faculty of Health and Medical Sciences,University of Copenhagen,Dyrlægevej 100,1870 Frederiksberg C,Denmark.
authors.forename: Tina V A
authors.initials: TV
authors.lastname: Hansen
authors.affiliation: Section for Bacteriology, Pathology and Parasitology,National Veterinary Institute,Technical University of Denmark,Bülowsvej 27,1870 Frederiksberg C,Denmark.
authors.forename: Heidi L
authors.initials: HL
authors.lastname: Enemark
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000469:parasitology / Q000628:therapy*; D018651:Cichorium intybus; D005243:Feces / Q000469:parasitology; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology / Q000628:therapy / Q000662:veterinary*; D008129:Lolium; D009348:Nematoda / Q000502:physiology; D009349:Nematode Infections / Q000469:parasitology / Q000628:therapy / Q000662:veterinary*; D010028:Ostertagia / Q000187:drug effects / Q000254:growth & development / Q000502:physiology*; D010270:Parasite Egg Count / Q000662:veterinary; D012717:Sesquiterpenes / Q000302:isolation & purification
chemical_list: D012717:Sesquiterpenes
keywords: Cichorium intybus; Cooperia oncophora; Ostertagia ostertagi; anthelmintic effects; cattle; ruminant; sesquiterpene lactones; silage