{"id":2361,"date":"2025-08-26T01:34:46","date_gmt":"2025-08-26T01:34:46","guid":{"rendered":"http:\/\/jamesway.com\/cn\/?p=2361"},"modified":"2025-09-23T19:30:17","modified_gmt":"2025-09-23T19:30:17","slug":"this-is-a-concise-post-title-that-spans-three-lines-as-needed-to-fit-8-4","status":"publish","type":"post","link":"https:\/\/jamesway.com\/cn\/blog\/2025\/08\/26\/this-is-a-concise-post-title-that-spans-three-lines-as-needed-to-fit-8-4\/","title":{"rendered":"Mottled Eggshells: What They Are and Why They Matter in Hatcheries"},"content":{"rendered":"

By Vanny Hardianto, Hatchery Consultant \u2013 APAC <\/span><\/b>June 2025<\/span><\/b>\u00a0<\/span><\/p>\n

Eggshells may look simple, but they play a big role in protecting the embryo and helping it develop properly during incubation. When eggshells are not formed correctly, it can cause problems. One of the most common issues we see is\u00a0<\/span>mottled eggshells<\/span><\/b>.<\/span>\u00a0<\/span><\/p>\n

What Is a Mottled Eggshell?<\/span><\/b>\u00a0<\/span><\/p>\n

A mottled eggshell has uneven spots that you can often see clearly when candling the egg. These spots are usually larger and appear more translucent than the rest of the shell. This happens when the structure of the shell is not properly formed.<\/span>\u00a0<\/span><\/p>\n

Think of it like building a wall: if the bricks aren\u2019t lined up correctly, or if there are gaps, the wall will be weak. The same thing happens with the shell.<\/span>\u00a0<\/span><\/p>\n

How Does a Normal Eggshell Form?<\/span><\/b>\u00a0<\/span><\/p>\n

The eggshell forms in layers, mostly in the hen\u2019s uterus over 18 to 20 hours. It\u2019s made up of:<\/span>\u00a0<\/span><\/p>\n