Potter L M, Shelton J R, McCarthy J P
Poult Sci. 1981 Dec;60(12):2678-86. doi: 10.3382/ps.0602678.
A study was conducted with 1,751 Large White turkeys divided into 36 pens of males and 36 pens of females between 8 and 24 or 20 weeks of age, respectively, to determine the requirements of protein and lysine for turkeys. Diets were composed of ground yellow corn, dehulled soybean meal, 6% stabilized fat, 4% meat and bone meal, .4% methionine, minerals, and vitamins. A 3 X 3 factorial design of nine diets varying in protein (18, 21, and 24%) and added lysine (0, .1, and .2%) was used between 8 and 12 weeks of age. Birds were reassigned to new balanced pens at the end of each 4-week period, and protein levels were reduced by 3.0%. The addition of 3 and 6% protein, which provides .22 and .44% lysine, to diets of turkeys between 8 and 20 weeks of age increased body weight gains 18.3 and 24.7%, respectively, in contrast to an increase of only 2.2 and 3.6% from .1 and .2% added L-lysine per se. the minimum protein requirements of large White male turkeys at 10, 14, and 18 weeks of age are 21.3, 19.5, and 17.6% and for female turkeys 21.7, 18.4, and 15.0%, respectively. The minimum lysine requirements of large White turkeys to 12, 16, and 20 weeks of age are about 1.4, 1.2, and.9%, respectively, or 4.5, 3.7, and 3.0 g/kcal metabolizable energy. Another amino acid appears to be equally or more deficient than lysine in diets used in this study.
对1751只大白火鸡进行了一项研究，在8至24周龄或20周龄期间，分别将其分为36个雄性栏和36个雌性栏，以确定火鸡对蛋白质和赖氨酸的需求量。日粮由黄玉米粉、去皮豆粕、6%的稳定脂肪、4%的肉骨粉、0.4%的蛋氨酸、矿物质和维生素组成。在8至12周龄期间，采用了3×3析因设计，即九种日粮，蛋白质含量（18%、21%和24%）和添加赖氨酸含量（0、0.1%和0.2%）各不相同。每4周结束时，将鸡重新分配到新的平衡栏中，蛋白质水平降低3.0%。在8至20周龄火鸡的日粮中添加3%和6%的蛋白质（分别提供0.22%和0.44%的赖氨酸），体重增加分别提高了18.3%和24.7%，相比之下，仅添加0.1%和0.2%的L-赖氨酸本身，体重增加仅为2.2%和3.6%。大白雄性火鸡在10周、14周和18周龄时的最低蛋白质需求量分别为21.3%、19.5%和17.6%，雌性火鸡分别为21.7%、18.4%和15.0%。大白火鸡到12周、16周和20周龄时的最低赖氨酸需求量分别约为1.4%、1.2%和0.9%，或每千卡代谢能4.5克、3.7克和3.0克。在本研究使用的日粮中，另一种氨基酸似乎与赖氨酸一样缺乏或更加缺乏。
