No, the act does not affect a company's ability to use strategies like loss leadering. That practice has always been possible under the act.
However, predatory pricing is a practice of anti-competitive acts that could amount to abuse of a dominant position.
Predatory pricing consists of setting the price of a product lower than it costs, in order to get rid of a competitor, as opposed to engaging in healthy competitive pricing. We want to see companies lowering prices through competitive pricing, but in very specific circumstances, the price would amount to a predatory price meant to drive a competitor out of business. A situation like that could be considered abuse of a dominant position.