Poultry
Bobwhite Quail Embryo Development
1 min read
This publication shows the development of a bobwhite quail embryo from Day 1 through Day 23.
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- Hatching eggs.
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- Infertile, unincubated egg. Blastodisc located on top of yolk appears irregular in shape.
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- Fertile, unincubated egg. Blastoderm larger, more regular in shape and has a “donut-appearance.”
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- Day 1 Blastoderm enlarges in size.
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- Day 2 “Donut-shape” greatly enlarged and embryo lies within the donut ring.
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- Day 3 Beginnings of a circulatory system.
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- Day 4 Circulatory system developing, embryo visible.
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- Day 5 Circulatory system well developed. Formation of appendages.
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- Day 6 Embryo in shell.
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- Day 6 Notice brain to body size relationship.
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- Day 7 Embryo in shell.
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- Day 7 Brain continues to develop at rapid rate.
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- Day 8 Embryo in shell.
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- Day 8 Limb development evident.
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- Day 9 Embryo in shell.
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- Day 9 Wing development rapid. Development of egg tooth begins.
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- Day 10 Embryo in shell.
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- Day 10 Egg tooth seen on tip of beak. Eyes very conspicuous.
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- Day 11 Embryo in shell.
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- Day 11 Continued limb development.
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- Day 12 Embryo in shell.
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- Day 12 Beginnings of feather development.
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- Day 13 Rapid wing development.
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- Day 14 Feather tracts seen on the back. Wings, feet, toes well developed.
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- Day 15 Increased formation of feathers.
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- Day 16 Hardening of beak and egg tooth continues.
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- Day 17 Eyelids have overgrown eyes.
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- Day 18-21 Calcification of bone started. Toenails and down feathers on neck, thighs and wings present. Embryo enlarges. Remaining yolk sac enters the body cavity.
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- Day 22 – Pipping. Chick pips into the air cell and begins pulmonary breathing. Chick begins pipping through the shell.
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- Day 23 Hatching. Chick hatches and dries
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- Twelve hours after hatching
Kenneth S. Macklin, Extension Specialist, Professor; John P. Blake, former Extension Specialist; Joseph B. Hess, former Extension Specialist; Wallace D. Berry, Associate Professor; Robert A. Voitle, Professor Emeritus, all in Poultry Science at Auburn University; and Thomas A. Hess, Biological Sciences/Wildlife and Forestry, Auburn University
Reviewed June 2022, Bobwhite Quail Embryo Development, ANR-1410