Karunajeewa H, Tham S H
Br Poult Sci. 1984 Jan;25(1):99-109. doi: 10.1080/13632758408454847.
From 8 to 20 weeks of age crossbred pullets were offered a protein concentrate plus either wheat, millet or paddy rice as crushed or whole grain. These pullets were then fed on three laying diets which differed in either methionine content or bulk density. In the growing period pullets given whole grains were heavier, and ate more protein-concentrate and hard grit than those given crushed grains. In the laying period they matured earlier, laid more eggs and utilised food more efficiently than the others. Pullets fed on wheat consumed more hard grit and utilised food more efficiently than those given millet or paddy rice. Pullets fed on millet had a higher linoleic acid content in their livers and laid larger eggs than those reared on wheat. Pullets reared on paddy rice matured later and laid heavier eggs than those reared on wheat. Methionine content and bulk density of the laying diets had no effect on egg production.
8至20周龄的杂交小母鸡被提供一种蛋白质浓缩物，外加碾碎的或整粒的小麦、小米或水稻。然后给这些小母鸡喂食三种产蛋日粮，它们的蛋氨酸含量或容重有所不同。在生长阶段，喂食整粒谷物的小母鸡比喂食碾碎谷物的小母鸡体重更重，摄入的蛋白质浓缩物和硬沙砾更多。在产蛋阶段，它们比其他小母鸡成熟更早，产蛋更多，食物利用效率更高。以小麦为食的小母鸡比以小米或水稻为食的小母鸡消耗更多硬沙砾，食物利用效率更高。以小米为食的小母鸡肝脏中的亚油酸含量更高，所产鸡蛋比以小麦饲养的小母鸡所产的更大。以水稻饲养的小母鸡比以小麦饲养的小母鸡成熟更晚，所产鸡蛋更重。产蛋日粮的蛋氨酸含量和容重对产蛋量没有影响。
