This is not what islam teaches us about how to treat animals.
In fact, many of these practices deem the meat none-halal for Muslim consumption.
Check out these references:
Animals that are diseased and/or eat feces are not Halal.
Note for our Judaeo-Christian readers who are unaware of what halal is. Briefly, Halal means "permissible". In the context of foods for human consumption, Halal means "permissible to eat". It is analogous, but not equivalent to kosher. There are many ways that food is considered Halal. For example: dead land animals are NOT Halal, while dead sea animals ARE Halal. Animals that are properly drained of their blood are Halal, while animals that are treated like the some of those in this video are NOT Halal. Some animals in general are not Halal for consumption, such as pigs, animals with talons, claws, or that are scavengers, or carnivores. Also, anything that would harm you, or intoxicate you is deemed none-Halal. Oh, and the proper term for "none-Halal" is Haraam, which you may come to conclude means "un-permissible" or "un-lawful". This, by no means, is the full explanation of Halal. You'd be better off checking one of these links.