It's just not quite as simple as throwing on another shift in the processing plant and carrying on. The processors have been dealing with a lot of absenteeism. A lot of people are not showing up for work because either they're sick or they're scared to go in case they get sick, so that has been an issue.
In the case you mentioned, he was able to secure enough of a workforce on a Saturday to process those pigs. However, the problem with trying to do extra shifts is that these facilities have strict food inspection rules in place, and there's disinfecting and cleaning of machines between shifts, and so on. It's not just as easy as adding more and more shifts to try to speed up capacity. There are strict rules, especially with food safety, that they have to follow, especially with cleaning of the equipment.