At the end of the day, non-pasture food animal raising boils down to getting enough nutrients and time into them to hit your target slaughter weight, subject to feed conversion ratio for the species.
Cheaper nutrients = higher margins or lower product prices
So there's a lot of repurposing of sanitized animal byproducts. At the end of the day, as Cyberpunk 2020 quipped, "Parts is parts. Dead is dead. Dead guys is parts."
Anyone who's not comfortable with that should either go vegetarian or raise / buy into local meat.
Crab/fish meal. Which is to say leftovers after processing, dried and ground. https://www.feedipedia.org/node/664
At the end of the day, non-pasture food animal raising boils down to getting enough nutrients and time into them to hit your target slaughter weight, subject to feed conversion ratio for the species.
Cheaper nutrients = higher margins or lower product prices
So there's a lot of repurposing of sanitized animal byproducts. At the end of the day, as Cyberpunk 2020 quipped, "Parts is parts. Dead is dead. Dead guys is parts."
Anyone who's not comfortable with that should either go vegetarian or raise / buy into local meat.