The Agricultural Land Reserve (ALR) is a provincial zone in which agriculture is recognized as the priority use. Farming is encouraged and non-agricultural uses are restricted.
A farm animal sanctuary, because they don’t send their animals off to slaughter like hobby farms to “produce a product”, they do not qualify. There are other options though. Below are links to see if your sanctuary is on ALR land as well as land uses that do qualify, as there are huge tax benefits.
If you are looking at starting a business to attach to your sanctuary, there are grants that possibly could help start it. Also this funding sources and grants for BC businesses list, which includes agriculture.