Between 10-39 days of age these young bulls leave their birth farm. In the Northern Europe, bull calves are sold to a slaughterhouse, which in fact transport the animals forward to another farm. These calf farms continue feeding the calves with milk for about six weeks. At the age of 2-4 months the calves can be considered as "teenagers" - at this stage healthy animals grow 800 - 1400 grams each day! This number varies between cow breeds. For dairy breeds the growth target is ~500 g / day, and ~700 g / day for beef breeds. When the animals weigh 120-180 kilograms (about 3-4 months of age), they may be transported to yet another farm, where they'll stay until they are slaughtered at the age of 16-19 months.
|Beef cattle in the last, fattening phase.|
In this case, their living conditions are abysmal.
As mentioned, beef cattle are slaughtered at the age of 16-19 months. At this stage bulls weigh about 300-350 kg, which is half of their adult weight. Heifers should weigh over 200 kilograms.
Raising beef cattle in America: Explore Beef
A different view by Animal Aid - Suffering of beef cattle