What is the difference between foreign three-way cross and domestic three-way cross? Read this one article to understand

Three-way cross pigs have strong stress resistance and very obvious heterosis. At present, the most widely used breeding plan in China is A×(B×C), where A is the terminal boar, B is the maternal sire, and C is the maternal dam. Among them, A is mostly Duroc, B is mostly Landrace, and C is mostly Large White. In many cases B and C can also be swapped. There are domestic three-way cross pigs and foreign three-way cross pigs. Below, let us take a look at the differences between foreign three-way cross and domestic three-way cross pigs!

What classifications do three-way cross pigs have?

1. Foreign three-way cross: all three breeds are introduced foreign breeds, such as Landrace, Large White, and Duroc crosses.

2. Domestic three-way cross: among the three breeds, one to two are Chinese breeds, such as Landrace, Large White, and Northeast Min pig.

3. Local three-way cross: all three breeds are local Chinese breeds, such as Neijiang pig, Rongchang pig, and Southern Yunnan small-ear pig.

Foreign three-way cross pigs

The so-called foreign three-way cross, first of all, is a three-way cross, meaning a crossbred pig of three breeds, and all three breeds are foreign. The most common foreign three-way cross we see is generally the “Duroc-Landrace-Large White” foreign three-way cross pig. The dam, first sire, and second sire are all improved foreign pig breeds, and crossbreeding produces three-way cross lean-meat pigs. The three cross breeds of these pigs are all introduced foreign breeds (Landrace, Large Yorkshire, Duroc), so they are called foreign three-way cross pigs.

Domestic three-way cross pigs

Domestic three-way cross, literally understood, is also a crossbred pig of three breeds, but among the three breeds there is a local Chinese breed, that is, among the three parents, the dam is a local improved breed and the foreign breed pig is the sire.