Where is the Landrace pig native to, and what major lines is it mainly divided into?
The Landrace pig is a relatively common excellent pig breed, distributed in all regions of our country. The main characteristics of the Landrace pig are a relatively high number of piglets born, fast growth and development, and a high lean meat rate, making it suitable for large-scale and small-scale pig farms. In order to let everyone understand the Landrace pig in more detail, the origin distribution and line classification of the Landrace pig are introduced to everyone below.
Where is the Landrace pig native to?
The Landrace pig was originally named Landrace, native to Denmark, with a small and delicate head, a flat and straight face, large ears leaning forward, completely white coat hair, a relatively large body, and a full and substantial hindquarters. The Landrace pig was introduced into our country in the 1960s. After thirty years of domestication and raising, it already possesses the characteristics of fast growth, high feed utilization rate, and a high lean meat rate, with a distribution range covering the whole country.
What major lines is the Landrace pig mainly divided into?
The Landrace pig is mainly divided into several major lines such as the Swedish line, Dutch line, German line, French line, British line, and American line. According to the order of introduction, the Landrace pig can be divided into the British-Swedish line (that is, the old three lines) and the Danish line (the new three lines). The British-Swedish line Landrace pig has relatively strong adaptability, a relatively robust constitution, and a relatively high number of piglets born, but a relatively low carcass lean meat rate; the Danish line Landrace pig has relatively poor adaptability, a relatively weak constitution, and a number of piglets born not as good as the British-Swedish line, but a relatively high carcass lean meat rate.
In China, the Landrace pig mainly includes lines such as the American line, British line, French line, Belgian line, and new Danish line. In production, the Landrace pig is commonly used as the first paternal parent or first maternal parent of the three-way cross (Duroc-Landrace-Yorkshire) pig. Among the existing Landrace pig lines, the crossbred offspring of the American line and the new Danish line grow fast and have high feed returns, while the offspring of the Belgian line have a relatively good body shape and a high lean meat rate.
In addition, due to historical reasons, in the 1960s of the last century, our country introduced Landrace pigs from the Northern European country Sweden, and afterwards successively introduced Landrace pigs from the Netherlands, France, the United States, and other countries. Since then, the pig-raising circles have given introduced pig breeds from different countries the title of xx (country name) line. Starting in the 1980s of the last century, the state implemented the "vegetable basket" and lean-type pig projects, and up to now, almost every year different farms introduce Landrace pigs from various countries.
Brief introduction to the performance of the Landrace pig
1. Fattening performance
Under good feeding conditions, the Landrace pig grows and develops rapidly. At 6 months of age, the body weight can reach more than 90 kg, the daily weight gain is 500-800 g, and each kg of weight gain consumes 3-3.5 kg of compound feed.
2. Reproductive performance
Sexual maturity is relatively late. Boars generally reach sexual maturity at 6 months of age and begin mating at 8 months of age. The estrous cycle of sows is 21-23 days, the estrus duration is 2-3 days, and the gestation period is 112-116 days. First-parity sows give birth to 8-10 piglets, and multiparous sows give birth to 9-13 piglets.
The above is an introduction to the origin distribution and line classification of the Landrace pig. Although the Landrace pig is a foreign pig breed, its breeding quantity in our country's pig industry is also among the top. Using scientific techniques to raise Landrace pigs can obtain better benefits.
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