I should probability correct your view of Humans being biologically not vegetarian. We in fact can live solely on a vege diet and "are" biologically adapted to that, its just so happens that we can eat meat also. An example I could use would be a tiger eating grass, its not going to kill the tiger, but its not the preferred diet for it either. We can digest meat because our stomachs can turn foreign materials into fat for storage, with meat being a foreign material to our bodies. Also meats are part of the reason for certain disease and illness such a cancer, diabetes, heart attacks, the list could go on. Its also part of the reason why obesity is such a problem. The only reason we eat meat now is because ancient humans couldn't grow their own food and had to rely on whatever they could find or hunt.
As for adding it to Aven colony I for one think its a good idea anyway since people commonly eat meat now, despite it not being good for them, and (hopefully) I can see little piggies!