Where is the origin of Landrace pig? How many major lines are Landrace pigs mainly divided into?

Landrace pig is a common excellent pig breed, which is distributed in every region of our country. The main characteristics of Landrace pigs are more litters, faster growth and development, and high lean meat rate, which is suitable for large-scale and miniaturized pig farms. In order to give you a more detailed understanding of Landrace pigs, the origin distribution and system classification of Landrace pigs are introduced to you.

Where is the origin of Landrace pig?

Landrace pig, originally born in Denmark, has a small and handsome head, straight face, big ears, full back hair, large physique and plump hindquarters. Landrace pigs were introduced into China in the 1960s. After 30 years of domestication and breeding, Landrace pigs have the characteristics of fast growth, high feed utilization rate, high lean meat rate and so on.

How many major lines are Landrace pigs mainly divided into?

Landrace pigs are mainly divided into Swiss, Dutch, German, French, British, American and other departments. According to the sequence of introduction, Landrace pigs can be divided into Yingrui line (old third line) and Danish line (new third line). Anglo-Rui Landrace pigs have stronger adaptability, stronger physique and more litters, but lower carcass lean percentage; Danish Landrace pigs have poor adaptability and weak physique, and their litter number is lower than that of Anglo-Rui line, but the carcass lean percentage is higher.

In China, Landrace pigs are mainly American, British, French, Belgian, Xindan and other strains. Landrace pigs are often used as the first male or female parent of three-way crossbred (du Landrace) pigs in production. Among the existing Landrace pig lines, the hybrid offspring of American line and Xindan line grew fast and had high feed reward, while the Belgian line had better body shape and high lean meat rate.

In addition, due to historical reasons, in the 1960s, China introduced Landrace pigs from the Nordic countries of Sweden, and then gradually introduced Landrace pigs from the Netherlands, France, the United States and other countries. Since then, the pig industry has named the introduced pig breeds from different countries as × × (national name) system. Since the 1980s, the national project of "vegetable basket" and lean pigs has been implemented until now. Almost every year, different farmers introduce Landrace pigs from various countries.

A brief introduction to the performance of Landrace Pig

1. Fattening performance

Under good feeding conditions, Landrace pigs grow and develop rapidly, with a body weight of more than 90 kg at the age of 6 months, a daily gain of 500-800 grams, and a compound feed consumption of 3-3.5 kg per kilogram.

2. Reproductive performance

The sexual maturity is relatively late, and the boars generally mature at the age of 6 months and begin to breed at the age of 8 months. The estrus cycle of sows is 21-23 days, the estrous duration is 2-3 days, and the pregnancy period is 112-116 days. The number of pups of first-born sows is 8-10, and that of post-parturient sows is 9-13.

The above is the introduction of the origin distribution and strain classification of Landrace pigs. Although Landrace pigs are exotic pig breeds, they are also in the forefront of the pig industry in China. Better benefits can be obtained by using scientific technology to raise Landrace pigs.

For the wonderful pictures and articles and popular comments of Changbai Pig, you may be interested in the following recommended contents of Nongxun. Welcome to read.

Agricultural products you may be interested in: national supply of Landrace pigs