I can't prove a negative in a universe of possibilities. I instead invite you to demonstrate the existence of this heretofore unknown magical substance. Incredible claims demand incredible proof, not merely the blathering of the ignorant, no matter how loudly the crowd brays.
		
		
	 
Well said! Bravo! Bravo! Bray!
While I don't agree with everything Arthur C. Clarke has said, I do like this quote:
“Any sufficiently advanced technology is indistinguishable from magic.”
Keeping our scientific minds open and emotions aside, we 
must acknowledge the possibility that some compound 
may exist that effectively and drastically reduces egg laying in chickens. Let's not go too far down a rabbit hole or build a new theology around it, but at least open-mindedly admit it's 
possible. I'll even give is a catchy name: NoEggCompound. I have no way to prove NoEggCompound exists and I don't know that I'll spend millions of dollars looking for it, but NoEggCompound does not have to be "magical". It 
could just be undiscovered/undisclosed technology. 
Having said that, I have no idea how to test for some feed additive that may or may not exist. Anyone know of a good feed test lab that will test for something unknown? I didn't think so. Let's give this one some more thought.
Speaking of seemingly magical, undisclosed technology, consider 
this.