If the bone slivers are that big & there's that many of them in a small amount of food I'd be looking for another brand.
Were there other raw brands besides this one & NV at the store? Maybe you can ask the employee if any of the other companies triple grind the bones?
Another option is buying your own meat ground or chunks & using TC Instincts Premix powder, this is what I was feeding Duffy when she could no longer digest bone properly.