ANATOMY

Detailed explanation-1: -Because chicken embryos are poikilothermic, embryo metabolic development relies on the incubation temperature, which influences the use of egg nutrients and embryo development. Incubation temperature ranging between 37 and 38°C (typically 37.5-37.8°C) optimizes hatchability.

Detailed explanation-2: -An embryo provided an optimum environment for development will position itself around 17–18 days of incubation for hatch. The proper position is with the head under the right wing with the head directed toward the aircell in the large end of the egg.

Detailed explanation-3: -On the second day of incubation, the blood islands begin linking and form a vascular system, while the heart is being formed elsewhere. By the 44th hour of incubation, the heart and vascular systems join, and the heart begins beating.

Detailed explanation-4: -Blastocyst Development. Soon after fertilization, the embryo is created from a small group of cells that are constantly dividing inside of a complex structure called the blastocyst. Blastocyst Implantation. Embryo Development. Fetal Development.