For sake of discussion and from above: ""Good fertilizer ... Would you want to eat a fish fed this stuff (Originally Posted By: Fish Food
.... If you ask me it beats the hell out of chicken heads and feet
...... and by BillD :IIRC Hydrolyzed chicken feathers are considered as "poultry by products" by some pellet manufacturers).
Correct me if I am wrong but isn't most all stuff (foods) injested and then digested by heterotrophs (consumers) first converted (digestion) to the basic "building blocks" of nutrients that are then reassembled by that heterotrophic consumer for growth and function? So regardless of the food stuff eaten isn't the final meat (protein-animal) basically the same for each species? Granted some food stuff and chemicals can be absorbed directly and thus flavors the meat but isn't the meat of each specie essentially the same chemical consistence (amino acids, etc). Animal fats commonly will have flavors from fat soluble chemcials, etc. I think even some chemicals flvors that are consumed are passed and while in the animal's system will cause flavors - odors. Garlic is probably one example. Off flavors in fish are another example that will be short term in fish exposed to those chemicals.
As far as protein it all depends on the amino acid profile.
For example shrimp protein is 70% digestible. Shrimp meal consisting of heads and shells protein is only 20% digestible. Shrimp meal is highly palatable but 80% of the protein is waste.
Protein digestibility percentages aren't available for most other parts meals.
As for fat fish do well on fat high in omega 3 and to a lesser degree omega 6.
Is this what you were looking for?
