On average a cow will consume 2% of her body weight in dry matter per day. Grass is usually 85% water (hence 15% dry matter). Thus, the calculations are as follows:
400 kg x 0.02 = 8 kg DM
8 kg DM / 0.15 DM in grass = 53.33 kg of grass as-fed per day.
Thus you can estimate a 400 kg cow may eat around 53 kg of grass per day.
8 hours
The average Jersey Cow produces 22 liters of milk per day (5.8 gallons)
The amount of grass a goat eats really depends on the breed. A Pygmy goat will eat up to 1/2 a pound of grass a day. A fainting goat eats only about 0.1 pounds of grass. So if you want a goat to mow your lawn for A Pygmy goat is the best.
A cow stands up and sits down about 14 times a day.
Certainly not much, especially if you are going in terms of tons, not pounds (lbs). A 1000 lb cow with or without a calf will eat 25 lbs DM of forage per day. This amount changes with moisture content, so if the grass she eats has a 60% moisture content, she'll eat maybe around 40 lbs of grass per day, as fed. In terms of tons, that's 0.02 tons per day. If you were looking for a much bigger or grandioso number for how much a cow eats per day, it looks like you're plumb outta luck!
Depends on what the cow's eating and how much it's fed.
There is no "cow" that will weigh at that weight. A CALF will weigh at that weight, not a cow. And to answer your question, it would be as many times as it wants to. Which can be anywhere from 2 to 6 times a day.
86 400
Grass, hay, grain or silage, depending on the time of year and what kind of farm/ranch they live at and what kind of cows they are.
6 times
10
9 gallons of milk/day