Burke W H
Department of Poultry Science, University of Georgia, Athens 30602-2772.
Poult Sci. 1994 May;73(5):749-53. doi: 10.3382/ps.0730749.
Wet and dry weights of 12-, 16-, and 20-d-old embryos from Hybrid strain and Nicholas strain commercial cross turkeys were determined, and the relationships between embryo weights and the preincubation weight of the eggs in which they were developing was determined by regression analyses. The wet weight of Hybrid strain male embryos was significantly greater than that of females at each age, whereas wet weight of male Nicholas embryos was greater than females at 16 and 20 d. Average dry weights of male embryos of both strains exceeded those of females at 16 and 20 d but differences were not significant. Significant linear regressions of embryo wet and dry weights on egg weight were present in the Hybrid strain males at 12 and 16 d of incubation and in females at 16 d only. The regression of Nicholas embryo wet weight on egg weight approached significance in 12-d-old males and 20-d-old females.
测定了杂交品系和尼古拉斯品系商用杂交火鸡12日龄、16日龄和20日龄胚胎的湿重和干重，并通过回归分析确定了胚胎重量与它们所发育的种蛋孵化前重量之间的关系。杂交品系雄性胚胎在各年龄段的湿重均显著高于雌性，而尼古拉斯品系雄性胚胎在16日龄和20日龄时的湿重大于雌性。两个品系雄性胚胎的平均干重在16日龄和20日龄时均超过雌性，但差异不显著。杂交品系雄性胚胎在孵化12日龄和16日龄时以及雌性胚胎仅在16日龄时，胚胎湿重和干重与种蛋重量之间存在显著的线性回归关系。尼古拉斯胚胎湿重与种蛋重量的回归关系在12日龄雄性和20日龄雌性中接近显著水平。
