Laying rate drop, eggshell achromachia.
产蛋率下降，蛋壳发白。
The effects of nutritional levels on breeding eggs quality andmetabolic rate of laying american partridge
饲粮营养水平对美国鹧鸪种蛋品质和代谢的影响
Effects of bathing pool bacterials density on laying, fertilization rate and live embryo rate in goose farm
鹅场洗浴池细菌密度对鹅产蛋数、受精率和活胚率的影响
Those differences of adult lifespan, period before laying eggs and the rate of hatching eggs were not obvious.
而成虫寿命, 产卵前期, 卵孵化率差异都不显著。
The rate of mil creep lengthening at the beginningafter rail laying on the track is greater than that of the afterward time.
新钢轨上道后的前期，蠕变伸长速率较大，以后逐步降低。
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