title: Alleviation of grass impaction in a flock of free-range hens.
authors.affiliation: Pacificvet Ltd, Christchurch, New Zealand.
authors.forename: N H
authors.initials: NH
authors.lastname: Christensen
mesh_terms: D000822:Animal Husbandry; D000818:Animals; D002645:Chickens; D004032:Diet; D005244:Fecal Impaction / Q000517:prevention & control / Q000662:veterinary*; D008278:Magnesium Sulfate / Q000627:therapeutic use; D006109:Poaceae; D011201:Poultry Diseases / Q000473:pathology / Q000517:prevention & control*
chemical_list: D008278:Magnesium Sulfate