"All Flock" is a marketing term primarily, its the guaranteed nutritional label that matters. and yes, during the pandemic, many found that (for many brands) their "All Flock" or "Flock Raiser" "Starter" are all substantially similar enough to be essentially interchangeable. So people were...
It all comes down to averages. Let's say you have a "typical" starter/grower feed at 18% crude protein, with Met at 0.3% and Lys at 0.7%, and we'll pretend further you are picking it up at $50/25kg, or $2/kg. Your ground flax is $3.6/kg.
Lets imagine that you desire to bring your met levels...
Yes, it will definitely work for that.
Flax is a "superfood buzzword" mostly. But not entirely. As a seed, its a nutritionally dense source. Considerably better than the often included Sunflower seed in terms of crude protein, roughly on par with hemp and sesame. Slightly higher fiber than...
^ I'm with @NatJ on that. "Branding" far less important than the guaranteed nutritional label.
During the Pandemic, many of us used things labeld "Grower" or "Starter" when we couldn't get All Flock / Flock Raiser, and plenty of others used Flock Raiser / All Flock when they couldn't find...
Welcome to BYC @chayes04 . Most of us here, for most flocks, will recommend an "all flock" type formulation for all ages, all breeds, all genders all their lives, plus free choice oyster shell and free choice fresh clean water. Here's the high level summary. Its a common question around here...