I watched that video. The animals shown here and suffering from cramped conditions and mistreatment are examples of poor owners. A good owner takes care of every pcs, because losing them at a young age means losing many kilograms of tasty meat in the future, although, like people, people with disabilities are periodically born and no one is immune from disease. The slaughter part shows a quite fast and modern process - a pneumatic percussion instrument or a knife in the heart it's fast and humane. The point is still in profit, as Karl Marx wrote, for example, this video does not show the way "Shackle and Hoist" (more precisely, there is, but only for ~ 30 seconds), which is 2 times faster (great performance) than the pneumatic devices shown. With this method, the time of death can stretch for 2-3 minutes, this is still no more than in the wild (I watched about 30 videos and measured the time, an average of 4 minutes, of course, more videos are needed for a more accurate calculation). And they suffer no more than the inhabitants of the favelas or the poorest people in India, and anywhere in the world, I think a person even suffers more, because, unlike an animal, he can understands that there can be better, but cannot change anything. Looks like torture of tantalum.
It's very interesting about deforestation for the sake of cattle breeding. I thought that in South America, deforestation is primarily due to the hunt for valuable species of wood. I have not come across this, in my area the problem is mainly deforestation for the sake of sown areas and also the sale of timber abroad, and earlier in the 60s there was an attempt to remake steppes, natural pastures, into land for agriculture, it ended very badly in the end. Agriculture is also now in a rather strange state, there are a lot of genetically modified plants, who knows what will happen to human genes after 5-6 generations of eating such food. A lot of harmful pesticides are also used. Active farming depletes the soil, you need to use a lot of fertilizer for the land to produce crops. In those countries where there is little money, it is easier to burn the forest, to clear the land fertilized with ash for agricultural crops, than to look for and bring high-quality fertilizers, e.g. volcanic soil. Cattle breeding is a more benign type of land use, as animals fertilize the land with their droppings. But there is also a big problem with drugs and antibiotics that are fed to animals. Vultures that feed on fallen dairy animals die due to drugs if not disposed of.
I think not much will change until we come to the line of self-destruction. Until now, all over the world they can not agree on the simplest thing - using the voltage of the same frequency and value, and the same sockets...
Insects and algae are the food of the future, there have already been experiments with algae on the ISS for oxygen and food, I am looking forward to the tests on growing edible cockroaches making them eat only algae, and the most interesting question is how to thermally treat a cockroach in zero gravity? I think the best solution is to grind the cockroaches, add liquids and use microwaves to heat this mass.
Edible insects are not easy to grow, they need clean food, not food from the trash heap. On the same cockroach farm, the owner fed them with pumpkins and other vegetables.
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