There are billions of cattle in the world today.
It will depend on where the 1000 acres are.
It all depends on how many horses you have. You need one acre per horse for forage. So, say you have 6 horses, you need 6 acres.
One. Twins occur in one out of 1000 births.
I've always heard that the rule of thumb is: One cow per acre or One horse per 3 acres. The difference is that a horse pulls up the grass and a cow cuts the grass. Also - It can depend on where the property is... south Texas is more like 2 acres per cow, farther north can be 2 per acre.
You will need more acres per horse in the southern part of Alberta than the north. Average is around 4 acres per horse, and up to 1.5 acre per horse in the northern parts. Though that's on excellent quality pasture: stocking rates may be a bit less on less-quality pasture. Not to mention that horses need room to run, unlike cattle, so you will need to add on a couple extra acres in addition to the amount that they will graze.
This depends on a lot of factors: size, weight and type of beef cattle you are raising, your location, soil type, and vegetation of your area, as well as what the 10 acres are going to be used for: pasture or drylot? So for that reason, this question cannot be completely answered without these additional details.
About $15 to $20 an acre per year
121.4 hectares per 300 acres.
0.78125 square miles per 500 acres.
956.298 acres per 387 hectares.
(20,000 acres) / (640 acres per sq mile) = 31.25square miles
204,160 acres per 319 square miles.
1 hectare = 2.4710538147 acres