Environmental burdens from animals used in field operations
I'm working on a LCA in India, where labour required for field operations is largely supplied by human or animal power. I had a look to different papers but none of them is attributing enteric emissions from animals to agricultural products. PAS 2050 explicitly excludes “animals providing transport” from the boundaries of the system.
What do you think? Have you come across any methodology to attribute environmental Burdens to animals used in agriculture?