Biomaterial Database

Vital gas exchange and hatchability of turkey eggs at high altitude. 1984

V L Christensen, and R A Bagley

Conductance of turkey eggshells was observed to be significantly (P less than .01) greater at 2000 than at 200 m elevation. It was concluded that the increased conductance may have been due to the Chapman-Enskog relation. Eggshells of nonhatching eggs from the high altitude were examined, and it was determined that despite the increased conductance rate, eggshells with significantly (P less than .05) less functional pore area hatched poorly in both oxygenated and nonoxygenated environments. When oxygen was not supplemented to the incubators at high altitudes, eggshells required significantly (P less than .01) fewer pore concentrations to allow embryos to survive to late stages of embryonic development than eggs in oxygen supplemented environments. However, greater pore concentrations on the air space were required in both environments to complete hatching. Cuticle removal from eggshells incubated in oxygen supplemented incubators at high altitudes significantly (P less than .05) reduced late embryonic mortality. It was concluded that eggshell cuticle removal may be more advantageous to hatchability at high altitude than oxygen supplementation.

UI	MeSH Term	Description	Entries
D010100	Oxygen	An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.	Dioxygen,Oxygen-16,Oxygen 16
D004058	Diffusion	The tendency of a gas or solute to pass from a point of higher pressure or concentration to a point of lower pressure or concentration and to distribute itself throughout the available space. Diffusion, especially FACILITATED DIFFUSION, is a major mechanism of BIOLOGICAL TRANSPORT.	Diffusions
D004528	Egg Shell	A hard or leathery calciferous exterior covering of an egg.	Eggshell,Egg Shells,Eggshells,Shell, Egg,Shells, Egg
D004625	Embryo, Nonmammalian	The developmental entity of a fertilized egg (ZYGOTE) in animal species other than MAMMALS. For chickens, use CHICK EMBRYO.	Embryonic Structures, Nonmammalian,Embryo, Non-Mammalian,Embryonic Structures, Non-Mammalian,Nonmammalian Embryo,Nonmammalian Embryo Structures,Nonmammalian Embryonic Structures,Embryo Structure, Nonmammalian,Embryo Structures, Nonmammalian,Embryo, Non Mammalian,Embryonic Structure, Non-Mammalian,Embryonic Structure, Nonmammalian,Embryonic Structures, Non Mammalian,Embryos, Non-Mammalian,Embryos, Nonmammalian,Non-Mammalian Embryo,Non-Mammalian Embryonic Structure,Non-Mammalian Embryonic Structures,Non-Mammalian Embryos,Nonmammalian Embryo Structure,Nonmammalian Embryonic Structure,Nonmammalian Embryos,Structure, Non-Mammalian Embryonic,Structure, Nonmammalian Embryo,Structure, Nonmammalian Embryonic,Structures, Non-Mammalian Embryonic,Structures, Nonmammalian Embryo,Structures, Nonmammalian Embryonic
D000531	Altitude	A vertical distance measured from a known level on the surface of a planet or other celestial body.	Altitudes
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D014422	Turkeys	Large woodland game BIRDS in the subfamily Meleagridinae, family Phasianidae, order GALLIFORMES. Formerly they were considered a distinct family, Melegrididae.	Meleagridinae,Meleagrididae