A pig weighing 30 kg is basically more than 1 month and a half, and can grow to about 15 kg one month after birth.

Feed about 3~5% of the pig's weight.

65% of the feed is corn

30*0.05*0.66= 1 kg of corn.

That is, a 30 kg pig needs to consume 1 kg corn every day.

As the weight of piglets increases, so does feed and corn.