Chickens are generally either bred for egg-laying performance, or an ability to fatten and grow quickly. While both males and females are fattened in broiler production, there is currently no economically worthwhile use of the male offspring of egg-laying chickens, as these cannot lay eggs. Therefore, day-old male chicks are destroyed in the layer hatchery (Krautwald-Junghanns et al., 2017).
As the red blood cells of birds possess a nucleus, they also carry the genetic sex information. Using spectroscopic techniques, the sex of an egg can be determined three days after it has been fertilised (Galli et al, 2017). In egg sexing of a chick’s sex while still in the egg is might reduce the number of male chicks that are killed shortly after hatching.
When will a major U.S. supermarket chain sell “no-kill eggs” in at least 25 states?
This question resolves as the date when a major US supermarket chain sells “no-kill eggs” eggs in at least 25 states. “No-kill eggs” are here defined as eggs produced by hens that hatched in a facility that successfully sexes the embryo at least 50% of the time, and subsequently destroys the embryos suspected to be male before hatching.
A supermarket is here defined as the company that operates physical self-service retail markets that sell foods and household merchandise. The supermarket must sell “no-kill eggs” in one or more physical stores in at least 25 different states. Examples of supermarkets that operate in at least 25 states today are listed here.