The incubation egg weight has important impact on the duck birth weight and the whole growth period.

肉鸭入孵蛋重对出生重有重要影响，同时肉鸭出生重对肉鸭全期生长结果有重要影响。

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It is discovered that the general smoke which not contains insecticide can also kill the egg. The incubation rate is only 10.8% when the egg was treated by general smoke for 1.5 h.

同时发现，不含杀虫剂的一般烟雾对该蚤的卵亦有熏杀作用，即用一股烟雾处理1.5小时后，孵化率只有10.8%。

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In this paper are presented the oviposition, the incubation behavior and the artificial egg-changing experiment of Ardea cinerea.

本文介绍了苍鹭的产卵、孵卵行为及人工换卵实验。

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