the protection of secret farming practices against intellectual theft or because if you saw the way pigs and chickens are raised you would stop eating meat?
Or demand that the farms be run properly? Filthy conditions on the Vera Cruz pig farm caused the reassortment of genes from pig, bird, and human flu strains to produce the H1N1 virus, which went pandemic. Conditions that bad wouldn't have been allowed in the US. Still, I have to wonder why more care isn't taken in producing ground meat? They have to throw out tons of it everytime they find a batch contaminated with e coli, though the contamination might be from only one carcass. Back to your question, it sounds suspicious to me. I doubt that ordinary farms have any heavy-duty "intellectual" secrets such as a pharmaceutical company might have. And if they did, this kind of secret won't be discovered by taking pictures from the road.