-- How to calculate the size of herd

to available pasture --
Click on the Excel workbook icon below to download the app and substitute your data to determine livestock density rates.
To change figures to those corresponding to your farm,
click Enable Editing at the top of the page. 
If you are uncertain regarding "Yield Per Acre," determine the size of the hay crop harvested from the farm and divide by the number of acres. 

If that isn't applicable, consult a local farmer or an extension agent from the local

Ministry of Agriculture.