Lüdke C, Jeroch H, Richter G, Hennig A
Arch Tierernahr. 1985 Aug;35(8):545-54. doi: 10.1080/17450398509425218.
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.
每组165只蛋鸡分别接受每千克饲料3.0克、3.5克或4.0克蛋氨酸、29克或59克脂肪以及0毫克、108毫克、217毫克、434毫克或868毫克胆碱的补充剂（3×2×5），为期336天。平均产蛋性能为70%，且不受饲料成分影响。补充蛋氨酸分别使蛋重显著增加了0.6克和1.1克。较高的脂肪含量使蛋重增加了0.6克。饲料消耗不受实验对象影响。实验结果表明，蛋鸡不需要补充胆碱作为饲料添加剂，因此预计胆碱与日粮中脂肪和蛋氨酸含量之间不存在相互作用。
