title: [Choline requirement of the laying hen. 2. Effect of methionine and fat content of rations on choline requirement].
abstract: 165 laying hens per group received 3.0, 3.5, or 4.0 g methionine, 29 or 59 g fat and supplements of 0, 108, 217, 434 or 868 mg choline per kg feed resp. (3 X 2 X 5) over a period of 336 days. The average laying performance was 70% and was not influenced values by the content of the feed. The methionine supplements significantly increased the weight of the eggs by 0.6 and 1.1 g resp. The higher fat content increased the weight of the eggs by 0.6 g. Feed expenditure was not influenced by the subject of the experiment. The results of the experiment show that laying hens do not require choline as feed supplement and that therefore no interactions between choline and the fat and methionine content of the ration are to be expected.
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002645:Chickens; D002794:Choline / Q000008:administration & dosage*; D004041:Dietary Fats / Q000008:administration & dosage*; D004044:Dietary Proteins / Q000008:administration & dosage; D004305:Dose-Response Relationship, Drug; D005260:Female; D008715:Methionine / Q000008:administration & dosage*; D009751:Nutritional Requirements; D010058:Oviposition / Q000187:drug effects
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins; D008715:Methionine; D002794:Choline
vernacular_title: Untersuchungen zum Cholinbedarf der Legehenne. 2. Mitteilung. Der Einfluss des Methionin- und Fettgehaltes der Ration auf den Cholinbedarf.