Yes, They will.
pandas living in the wild are generally malnourished, and their weight is about 20kg lighter than those in captivity.
Pandas are carnivores. Their digestive system is more suitable for digesting meat. There are very little nutrients in bamboo, it explains why pandas spend a long time eating it every day.
Pandas do not hibernate, as the bamboo does not provide enough energy for their hibernation.
99% of the food of pandas is bamboo. It is not that they don’t like meat, but it is challenging for them to hunt for meat in the wild.
The pandas that we saw in the videos are all chubby, and that’s because they are all in captivity and they are provided with sufficient nutrients.