Edible Cacti

I know Prickly Pear fruit and pads are edible. Does anyone know if dragon fruit or Peruvian Apple cactus trunks/stems are edible for livestock?

ok. Found out dragon fruit stem is edible. But peruvian apple cactus?

No idea about that Peruvian variety. Here in the Sonoran desert, I know that Nopales (what you probably refer to as prickly pear) are only edible for humans when they are early shoots in the spring, before the spines harden. The soft green flesh is actually quite sweet. The javelina here eat the whole plant when the summers get so hot there isn't anything else available. Likewise the rabbits will eat anything when they get hungry enough.

David Barrett wrote:I know Prickly Pear fruit and pads are edible. Does anyone know if dragon fruit or Peruvian Apple cactus trunks/stems are edible for livestock?

I have two Peruvian apple cacti. I have never read where the actual cactus is edible, but I do know that if they bloom, the tuna is edible and sweet. Mine are young and have not bloomed yet, but they should this year.
I live in Ohio and we have native (naturalized?) opuntia cactus that grow along the train tracks, and certain places in the woods. The pads on those are edible, as well as the tuna although it is not very sweet. I am thinking of making jelly with them this year.

Standy-uppy cacti, like the Peruvian apple or pitaya here in Mexico, have a woody middle. There's a variety of nopal that is called nopal de vaca, which has spines that cows (vacas) can eat without getting poked. Other forms of cactus are used as fencing to keep cows out, so that implies they don't like eating it.