It's just that keeping your heart rate in the target range during regular aerobic exercise has been shown to be safe and effective for increasing your aerobic fitness. Exercising above this range can be very uncomfortable and may increase your risk of injury.
Typical daily weight gains for feedlot animals ranges between 0.5kg to 2.5kg per day, while grass fed animals are somewhat lower than this. The following data was collected from a small beef cattle company in Dallarnil in Queensland (approximately 300km north of Brisbane).
The grass carp can eat up to 40% of its body weight in plants every day. Other species of carp consume up to 20% of their body weight daily. They can reach a maximum weight of 110 pounds (although the average is closer to 50). Bighead and silver carp eat plankton, which native mussels and fish depend on.