Probiotics being used as a egg spray for hatching

[MGG]

I have eggs incubating, thoughts on just using Sav-a-chick probiotics?

 

[JRies]

Save a chick probably are not the right ones to use. Not sure they would hurt anything. I will try this again next year but need to do more research. I used the probiotics in the study got them in there purest form with no preservatives. The goslings took 3 extra days to hatch and needed assistance to hatch they had outgrown there shells. So need to know more about how to use and how much. Think there is something here but. Limited knowledge made me back off