tojástermelésre
Tojástermelés is the biological process by which a bird’s egg (tojás) becomes fertilized, initiating embryonic development. In most birds, the male fertile sperm is deposited in the female’s reproductive tract during copulation or via artificial insemination. The sperm travels through the oviduct, where it meets the ovum (eggshell) in the uterus (mag', also called the shell gland). There, the sperm penetrates the outer layers of the egg—first the outer shell membrane, then the outer shell membrane inner layer, followed by the innermost membrane—through a process called syngamy.
The fertilized egg, now called a zygote, begins to divide and grow while the shell is formed
The timing of tojástermelés is closely linked to environmental cues such as day length and food availability,
Tojástermelés is fundamental to avian life cycles and has significant implications for conservation biology, poultry science,