What factor is NOT considered when calculating a pony's daily food needs?

When calculating a pony's daily food needs, the length of hair is not a relevant factor. The primary considerations include the weight of the pony, which directly influences its caloric requirements, the type of workload it is engaged in, as different activities necessitate varying energy levels, and the body condition score, which helps assess whether the pony is at an ideal weight or needs adjustments in its feeding program.

The length of hair can vary due to factors such as seasonality or breeds, but it does not significantly impact a pony's nutritional requirements or energy needs. Therefore, it is not included when determining how much food a pony should receive daily. Understanding the correct factors to consider ensures optimal health and performance for the pony.