title: Effects of dietary chloride and magnesium on the incidence of tibial dyschondroplasia in chickens fed on Chinese practical diets.
abstract: 1. The effects of varying the concentrations of dietary magnesium and chloride on the performance, incidence of tibial dyschondroplasia and tissue element contents of broilers fed on Chinese practical maize soya-bean meal diets was assessed. 2. Two concentrations of dietary chloride (1.5 and 3.5 g/kg) and 3 of dietary magnesium (2.0, 4.0 and 6.0 g/kg) were used to form 6 dietary treatments for a 21-d experimental period. 3. Results from this study indicated that the dietary ingredients of maize and soya-bean meals produced in the northeast of China may predispose or influence the susceptibility of chickens to tibial dyschondroplasia. 4. High dietary chloride induces a high incidence of tibial dyschondroplasia (P less than 0.05) which could be ameliorated by dietary magnesium supplementation. 5. Dietary magnesium plays an anti-rachitic role by improving the deposition of copper and zinc in the bone tissue. 6. Supplementation with magnesium to 4.0 g/kg is recommended for broiler diets in northeast China.
authors.affiliation: Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing.
authors.forename: L
authors.initials: L
authors.lastname: Luo
authors.forename: J M
authors.initials: JM
authors.lastname: Tong
authors.forename: J C
authors.initials: JC
authors.lastname: Huang
mesh_terms: D000821:Animal Feed / Q000032:analysis; D000818:Animals; D002645:Chickens; D002681:China / Q000453:epidemiology; D002712:Chlorides / Q000008:administration & dosage*; D004435:Eating; D015994:Incidence; D008274:Magnesium / Q000008:administration & dosage*; D008297:Male; D010009:Osteochondrodysplasias / Q000453:epidemiology / Q000209:etiology / Q000662:veterinary*; D011201:Poultry Diseases / Q000453:epidemiology / Q000209:etiology*; D013025:Glycine max; D013977:Tibia; D015430:Weight Gain; D003313:Zea mays
chemical_list: D002712:Chlorides; D008274:Magnesium