What do you mean by opening material?

Personal understanding is: teaching trough feed is to induce pigs to eat feed and let suckling pigs gradually adapt to plant feed. The use of excellent trough materials can promote the development of gastrointestinal flora and enzyme system, and prepare for the later growth, not just the higher feed intake and the maximum daily gain during the trough teaching process.

Cutting refers to the feed that pigs eat for the first time, with high milk content, similar to milk substitute. Personally, I think there is no difference between the two.

Suckling pig feed contains the above two kinds, which is the sum of Jiaocao feed and opening material. Conditional suckling pigs eat cutting or milk substitute feed first, and then eat trough feed. You can also eat only raw materials without conditions.