Identify the average daily energy requirements for either a cow, broiler chicken, horse, or dog during a specific phase of its life. Specify whether metabolizable energy (ME) or digestible energy (DE) is suitable for the chosen species.

Create a table outlining five potential feedstuffs suitable for your animal of choice, including their expected DE or ME values.

Construct a ration using two of the feedstuffs from your table that fulfills the identified energy requirements. Describe your approach to formulating this ration without utilizing a feed formulation program and evaluate any additional factors essential for the success of your proposed solution.