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).
Average cow weight x hay DMI (% of cow weight, as a decimal) = DMI/d1300 x .025 = 32.5 lb of hay DMI/day Step 2 â Adjust Daily Hay Disappearance Per Cow for Waste In addition to what cows consume, there will be some waste associated with feeding hay and this must be accounted for when calculating winter feed needs.