A crossing system that results in progeny that are all sold as market animals is called what?

A crossing system that results in progeny being sold entirely as market animals is referred to as a terminal cross. In this system, the offspring produced from the mating of two different breeds or genetic lines are intended specifically for slaughter rather than for breeding purposes. This allows producers to take advantage of hybrid vigor or heterosis, which can result in progeny that exhibit improved growth rates, better feed efficiency, and enhanced overall performance compared to purebred animals.

In terminal crosses, all offspring are typically marketed, which means that they are not kept for breeding but sold for their meat value. This is a key characteristic that distinguishes terminal crosses from other crossing systems, such as rotational or composite crosses, which may retain some animals for future breeding or have an ongoing breeding program. By focusing solely on producing animals for market, this system can help producers optimize their operation for meat production efficiency.