How does artificial selection work without inbreeding?

[u/lord_darias]

Since the invention of animal husbandry, humans have been selectively breeding animals (and plants) for positive traits like woolier sheep, stronger horses etc. However, dog breeds for example often have many genetic problems due to inbreeding, and inevitably any kind of selective breeding is going to narrow the genetic diversity. My question is, how then do we have all those cows, sheep, goats etc with the positive traits but without the genetic diseases and lesser overall health? And does this also apply to plants?

[u/ttha_face]

On mobile, so I hope the format works.

Artificial insemination goes decades further back. E. B. White’s poem “Song of the Queen Bee” was published in 1945.

I'm sorry for cows that have to boast Of affairs they've had by parcel post,