Calculation method
The method, without hidden approximation.
Food requirement = number of dogs involved × rations in g/dog/day × days ÷ 1,000. Objective = need × (1 + margin/100). Lack = maximum of zero and target minus stock. Formats to buy = shortage divided by the net weight of the format, rounded to the larger whole number.
Example: A dog consumes 300 g/day. For 7 days, plan 2.1 kg without margin. With 1 kg available, there is 1.1 kg missing: a 2 kg bag is enough to cover this shortage. This example does not recommend a 300 g ration for your dog.
