Oju E M, Waibel P E, Noll S L
Department of Animal Science, University of Minnesota, St. Paul 55108.
Poult Sci. 1988 Dec;67(12):1760-9. doi: 10.3382/ps.0671760.
Male and female Large White Nicholas turkeys were fed corn and soybean meal diets for 24 and 20 wk, respectively. The same series was fed with a low protein modification (75% of control in protein and 66% of control in methionine and lysine per Mcal ME) during 0 to 6 wk of age. For the study of organ and tissue growth, six male turkeys per treatment were sampled at 2, 4, 6, 8, 12, 16, 20, and 24 wk of age. Six females per treatment were also sampled at 2, 4, 6, 8, 11, 14, 17, and 20 wk of age. Weights of eviscerated carcass, breast, thigh, drumstick, wing, back, neck, feathers, liver, heart, pancreas, alimentary tract less gizzard, and gizzard were depressed by early protein undernutrition to 6 wk of age. Compared with values for controls, undernutrition increased proportions of the liver, alimentary tract less gizzard, gizzard, and heart at 6 wk of age; proportions of the back, neck, feathers, and pancreas were not affected, but breast and thigh proportions were reduced. Compensatory growth during realimentation eliminated all differences between undernourished and control turkeys in weight and proportions of organs and tissues by 20 wk of age.
雄性和雌性大白尼古拉斯火鸡分别饲喂玉米和豆粕日粮24周和20周。同一批火鸡在0至6周龄期间饲喂低蛋白改良日粮（每兆卡代谢能的蛋白质含量为对照的75%，蛋氨酸和赖氨酸含量为对照的66%）。为了研究器官和组织的生长情况，在2、4、6、8、12、16、20和24周龄时，对每个处理的6只雄性火鸡进行采样。在2、4、6、8、11、14、17和20周龄时，也对每个处理的6只雌性火鸡进行采样。6周龄前的早期蛋白质营养不良使去内脏胴体、胸肉、大腿、小腿、翅膀、背部、颈部、羽毛、肝脏、心脏、胰腺、不含砂囊的消化道和砂囊的重量降低。与对照组相比，6周龄时营养不良使肝脏、不含砂囊的消化道、砂囊和心脏的比例增加；背部、颈部、羽毛和胰腺的比例不受影响，但胸肉和大腿的比例降低。恢复饲喂期间的补偿性生长消除了到20周龄时营养不良和对照火鸡在器官和组织重量及比例上的所有差异。
