Inbreeding in domestic geese

Asked April 30, 2020, 12:36 PM EDT

I have a friend of a friend, in need, who has been feeding her family on Quail eggs, and who has requested a few of my fertilized goose eggs to hatch in an incubator, for future goose eggs for her family. My 4 geese are pets, are an original goose and gander (Toulouse), and a goose and gander hatched from them. During mating season this year, the mother goose paired up with her son gander and the father gander paired with his daughter goose. Are their any negative results of record to expect from such inbreeding in geese and how to respond, as well as the pros and cons of hatching such inbred eggs in an incubator as opposed to by natural means? Thank you very much for any clarifying information you are able to provide!

Harney County Oregon

1 Response

Under these breeding conditions, Inbreeding will increase which means there is an increased possibility that negative recessive genes will show themselves by either reduced habitability or abnormalities in the hatched goslings. Any birds that hatch and appear healthy will not be affected however their offspring, if bred to relatives, will have a higher probability for problems. If the goslings that hatch from these pairs are bred to unrelated individuals then inbreeding drops to zero once again. Brother/Sister matings cause the highest increase in inbreeding while father/daughter or mother/son matings have lower inbreeding in their offspring.

On the other hand, whether eggs are hatched naturally or in an incubator the goslings will not be affected by the process. The benefit of natural mating is that the goose will take care of the young so no need to provide brooding facilities.