title: Control of eight predominant Eimeria spp. involved in economic coccidiosis of broiler chicken by a chemically characterized essential oil.
abstract: OBJECTIVE
  To control eight most predominant Eimeria spp. involved in the economic disease of coccidiosis in broiler chicken, by a chemically characterized essential oil of eucalyptus and peppermint.
  
  
  RESULTS
  The experimental design consisted of 160 day-old-broiler chicks, divided into four equal groups (G1 , G2 , G3 and G4 ), with 40 birds per group. Each group was divided into four equal subgroups. Birds in G1 were deprived of essential oil treatment and of Eimeria challenge. Birds in G2 were unchallenged, and administered the essential oil in drinking water at 0.69 ml kg(-1) body weight. Birds in G3 were untreated with essential oil, and each of its four subgroups was challenged at a different age (14, 21, 28 and 35 days). Birds in G4 were treated with essential oil, and challenged in the same manner as for G3 . Equal number of birds from all subgroups (n = 10) were sacrificed at the sixth day after the time allocated for each challenge. The 6 day incubation period post challenge resulted in respective mean per cent weight increase in G2 and G1 birds equivalent to 57.8 and 53.1% (P < 0.05). In addition, the essential oil improved the per cent weight increase in challenged birds (54.6%) compared to the challenged-untreated birds (18.6%) (P < 0.05). The mean feed conversion, mortality, intestinal lesion scores and oocyst counts were significantly reduced in the challenged-treated birds compared to the challenged-untreated birds (P < 0.05).
  
  
  CONCLUSIONS
  The results support the hypothesis of using the essential oils of eucalyptus and peppermint to control the most prevalent Eimeria spp. involved in coccidiosis of broiler chicken, helping in improvement of their production, alleviation of lesions and reduction in intestinal oocyst counts.
  
  
  CONCLUSIONS
  This study provides information about the possibility of using this blend of essential oil as a coccidiostat for the protection of broiler chickens against the prevalent eight Eimeria spp. of coccidiosis.
authors.affiliation: Animal and Veterinary Sciences Department, Faculty of Agricultural and Food Sciences, American University of Beirut, Beirut, Lebanon adjunct to Biochemistry Department, Faculty of Science and Experimental Biochemistry Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
authors.forename: E K
authors.initials: EK
authors.lastname: Barbour
authors.forename: R R
authors.initials: RR
authors.lastname: Bragg
authors.forename: G
authors.initials: G
authors.lastname: Karrouf
authors.forename: A
authors.initials: A
authors.lastname: Iyer
authors.forename: E
authors.initials: E
authors.lastname: Azhar
authors.forename: S
authors.initials: S
authors.lastname: Harakeh
authors.forename: T
authors.initials: T
authors.lastname: Kumosani
mesh_terms: D000818:Animals; D001835:Body Weight / Q000187:drug effects; D002645:Chickens / Q000254:growth & development / Q000469:parasitology*; D003048:Coccidiosis / Q000469:parasitology / Q000473:pathology / Q000517:prevention & control / Q000662:veterinary*; D003049:Coccidiostats / Q000737:chemistry / Q000627:therapeutic use*; D004539:Eimeria / Q000254:growth & development; D007422:Intestines / Q000469:parasitology / Q000473:pathology; D009822:Oils, Volatile / Q000737:chemistry / Q000627:therapeutic use*; D033661:Oocysts; D011201:Poultry Diseases / Q000469:parasitology / Q000473:pathology / Q000517:prevention & control*; D015430:Weight Gain
chemical_list: D003049:Coccidiostats; D009822:Oils, Volatile
keywords: chicken broiler; coccidiosis; essential oil; eucalyptus; peppermint; terpenes