title: Mycoplasma gallinarum infection in commercial layers and onset of fatty liver hemorrhagic syndrome.
abstract: Fatty liver hemorrhagic syndrome (FLHS) was observed in each of three trials in which commercial layers were utilized to determine the effect of Mycoplasma gallinarum (MGn) on egg and eggshell quality parameters and egg production. In each of three trials, FLHS occurred 31-54 days later in MGn-inoculated hens as compared with the Mycoplasma-clean (control) hens. In trials 1 and 2, no therapeutic intervention was initiated to ameliorate FLHS. In trial 3, therapeutic intervention was instituted and consisted of the addition of 1 pound of choline chloride/ton of feed. Total mortality recorded throughout the duration of each trial and attributable to FLHS was not significantly different between the control and the MGn-inoculated treatment. However, FLHS-associated mortality in each of the three trials was numerically greater for the control treatment.
authors.affiliation: USDA, Agricultural Research Service, South Central Poultry Research Laboratory, Mississippi State, MS 39762, USA.
authors.forename: S L
authors.initials: SL
authors.lastname: Branton
authors.forename: S M D
authors.initials: SM
authors.lastname: Bearson
authors.forename: B L
authors.initials: BL
authors.lastname: Bearson
authors.forename: W R
authors.initials: WR
authors.lastname: Maslin
authors.forename: S D
authors.initials: SD
authors.lastname: Collier
authors.forename: J D
authors.initials: JD
authors.lastname: Evans
authors.forename: D M
authors.initials: DM
authors.lastname: Miles
authors.forename: G T
authors.initials: GT
authors.lastname: Pharr
mesh_terms: D000818:Animals; D002645:Chickens / Q000382:microbiology; D002794:Choline / Q000627:therapeutic use; D004531:Eggs; D005234:Fatty Liver / Q000150:complications* / Q000188:drug therapy / Q000662:veterinary*; D005260:Female; D006474:Hemorrhagic Disorders / Q000150:complications / Q000188:drug therapy / Q000662:veterinary; D008082:Lipotropic Agents / Q000627:therapeutic use; D009174:Mycoplasma / Q000502:physiology*; D009175:Mycoplasma Infections / Q000150:complications* / Q000188:drug therapy / Q000662:veterinary*; D011201:Poultry Diseases / Q000188:drug therapy / Q000382:microbiology* / Q000473:pathology*; D013577:Syndrome
chemical_list: D008082:Lipotropic Agents; D002794:Choline