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核心技术专利：CN118964589B侵权必究

核心技术专利：CN118964589B侵权必究

Richardson M K, Deeming D C, Cope C

Department of Anatomy and Developmental Biology, St George's Hospital Medical School, London, England.

Br Poult Sci. 1998 Sep;39(4):575-8. doi: 10.1080/00071669888809.

The morphology of the distal part of the upper mandible in ostrich embryos was investigated using scanning electron microscopy just prior to and during hatching. 2. Although a keel-like structure on the tip of the upper mandible superficially resembles an egg tooth it appears to play no role during hatching. 3. The distal tip of the upper mandible is covered by an amorphous layer, the right side of which disappears during the hatching process. This layer acts to protect the beak during the rubbing process which creates a hole in the inner shell membrane during hatching.

在鸵鸟胚胎即将孵化和孵化期间，利用扫描电子显微镜对其上颌骨远端部分的形态进行了研究。2. 虽然上颌骨尖端的龙骨状结构表面上类似于卵齿，但它在孵化过程中似乎不起作用。3. 上颌骨的远端尖端覆盖着一层无定形层，在孵化过程中该层的右侧会消失。这层在孵化过程中通过摩擦在内壳膜上形成一个洞时起到保护喙的作用。

Richardson M K, Deeming D C, Cope C

Department of Anatomy and Developmental Biology, St George's Hospital Medical School, London, England.

Br Poult Sci. 1998 Sep;39(4):575-8. doi: 10.1080/00071669888809.

The morphology of the distal part of the upper mandible in ostrich embryos was investigated using scanning electron microscopy just prior to and during hatching. 2. Although a keel-like structure on the tip of the upper mandible superficially resembles an egg tooth it appears to play no role during hatching. 3. The distal tip of the upper mandible is covered by an amorphous layer, the right side of which disappears during the hatching process. This layer acts to protect the beak during the rubbing process which creates a hole in the inner shell membrane during hatching.

在鸵鸟胚胎即将孵化和孵化期间，利用扫描电子显微镜对其上颌骨远端部分的形态进行了研究。2. 虽然上颌骨尖端的龙骨状结构表面上类似于卵齿，但它在孵化过程中似乎不起作用。3. 上颌骨的远端尖端覆盖着一层无定形层，在孵化过程中该层的右侧会消失。这层在孵化过程中通过摩擦在内壳膜上形成一个洞时起到保护喙的作用。