You must find the limit of the creature, the work that the animal can do in a single day, the number of breaks, how many times you will feed it, what time it will shit, how much water it drinks.
It is your responsibility for the continuous search for the best income. The beast will try to slow down, look more tired and exhausted than it is. It will ask for water, rest and mercy. Remember they are feigned, treacherous and lazy.
Do not whip too much, do not force impossible rhythms of work, it can end up killing the animal, losing the investment.
Hit the right way, at the right pace, at the right time and in the right place. Avoid spank the kidneys or face, pay attention if the leather is at the breaking point, avoid very large bleeding.
Consider if it's worth blinding him, many say that it brings several advantages, the slave does not distract himself, he becomes more obedient, defenseless and does not try to escape anymore.
Other owners say it is advantageous to castrate them, others cut their tongues out. For the first suggestion the problem is that the animal can become fat and discouraged, depressed. The removal of the tongue sometimes damages the feeding and the strength of the animal. See what you prefer, think well before you decide, these measures are irreversible.
If you use it with rigor and wisdom, the slave can work, make profits, and last for decades.