None. Ranchers don't raise their cattle in the rainforest. They raise their cattle on land that was once rainforest, and deforested for reasons either for making more land for more cattle, or more land to grow more crops from palm oil to soybeans.
Greenpeace say 80% in the Amazon rainforest.
5.5 million
Depends how many head of cattle you have, how the market is, and how much the animals weigh when your planning on selling them.
Not all ranchers do. Microchipping every animal can be quite expensive, and it's often much more cheaper to use eartags to track their cattle.
They don't use the rainforest. It's the land that the rainforest was once on that is used. Rainforests are cut down and burned to allow for more farming to be done, and grass seed to be sown so cattle can graze in those areas. The more land that a cattle baron can purchase, the larger his cattle herd can be and the more profit he can obtain when selling excess stock. Land that had been "improved" or been converted from rainforest to agricultural land is cheaper than land that has been used for agricultural purposes, thus making it a good investment for such ranchers to make as a means to increase their land size and thus their herd as well.
Because there was a much larger population back East than there was out West.
Sheep tend to eat the grass much closer to the ground than cattle do. As a result it takes the grazing pasture longer to recover. In the old days cattlemen thought the ground would never recover so they ran sheepherders off their grazing land.
This is an "OLD West" Question. Ranchers in the old west used the open range to feed their cattle. They would graze on open land year round. In the summer they would graze in the high country where it was cooler and in the winter they came down to the low country to graze. When farmers arrived in the territories they fenced off their land with Barbed Wire to keep the cattle out. This cut up the open land that the ranchers had always used. Farmers also brought Sheep. Sheep will eat grass down to the roots. Where cattle will not. This also killed off much of the grass land that the cattle needed. Farmers used Barbed wire to keep the cattle out. Cattle, being stupid, would often get caught in the wire, injuring themselves and often dieing from their wounds. Ranchers hated the new farmers and this led to Wars between ranchers and farmers in the Old West.
Cattle ranches in the western part of the US had workers that herded and bred cattle for their meat. Much of the cattle herds were driven by cowboys to St. Louis to be sold and slaughtered. The term "cowboy" comes from the work with cows on these ranches.
They adapted to theWest by learning how to farm in the worst conditions. Also they learned how to travel with their cattle shorter distances because if they traveled a long way the cattle will become skinny and not be worth as much. As they traveled shorter distances the cattle stayed fat and were worth a lot of money.
The open range came to an end because barbed wire was invented and was incredibly cheap, this meant that cattle ranchers could fence them in cheaply. One reason they wanted to do this was because the cows could roam all over the place which led to confusion when one persons cattle ended up on another ranchers farm. The demand for beef also fell meaning that cattle ranchers found it harder and harder to sell the cattle that they were breeding and many cattle were dying and going to waste, one reason for this was the hard weather conditions and as the business was not as good anymore and people were not making as much money anymore, they moved onto other things which were easier or made them more money.
Refrigerated railroad cars could take the processed meat to the East. Actually the railroads enabled ranchers to drive their cattle shorter distances to the trains that came to their most local cow-town. The railroads allowed cattle to be transported long distances, quickly and efficiently to distant markets. This meant that herding of cattle on foot over long distances, using much man power, would eventually be consigned to the western cowboy movies.