Farming operations are complex. The following pros and cons have not been factored into this calculator:

• Increasing stocking during periods of low pasture growth can be the limiting period of feed on offer, limiting the number of stock carried on a farm. This is more likely on mixed farms where stock can utilise stubbles. If pasture can be better utilised through this period, move stock can be carried on a given area.
• It is common for feeders used in this calculator to be used for other purposes at different times of the year. This reduces the depreciation expense and increases the return on investment.
• Supplementing ewes in the heightened stress period of lambing and lactation leads to extra wool growth. It also reduces the risk of the tensile strength lowering and devaluing the value of the wool.