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Chick Embryo Development
Infertile • No development. Day 1 • Appearance of tissue development. Day 2 • Tissue development very visible. • Appearance of blood vessels. Day 3 • Heart beats. • Blood vessels very visible. Day 4 • Eye pigmented Day 5 • Appearance of elbows and knees. Day 6 • Appearance of beak. • Voluntary movements begin. Day 7 • Comb growth begins. • Egg tooth begins to appear. Day 8 • Feather tracts seen. • Upper and lower beak equal in length. Day 9 • Embryo starts to look bird-like. • Mouth opening appears. Day 10 • Egg tooth prom • Toe nails Day 11 • Comb serrated. • Tail feathers apparent. Day 12 • Toes fully formed. • First few visible feathers Day 13 • Appearance of scales. • Body covered lightly with feathers. Day 14 • Embryo turns head towards large end of egg. Day 15 • Gut is drawn into abdominal cavity Day 16 • Feathers cover complete body. • Albumen nearly gone. Day 17 • Amniotic fluid decreases. • Head is between Day 18 • Growth of embryo nearly complete. • Yolk sac is still on outside of embryo. • Head is under the right wing Day 19 • Yolk sac draws into body cavity. • Amniotic fluid gone. • Embryo occupies most of space within egg (not in the air cell). Day 20 • Yolk sac drawn completely into body. • Embryo becomes a chick (breathing in air cell). • Internal and external pip. Day 21 للاطلاع على الملف كاملا + الصور يرجى تحميل الملف المرفق اتمنى لكم الفائدة
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