The liquid feed system was used earlier in European countries and its popularity was also high. At present, 60-70 % of large-scale pig farms in Northern Europe use this feeding method, and Ouda is 40 %, and it has an upward trend year by year. Since the 1990s, liquid feeding system has been used in some mother pig farms or fertilizer farms in China. Xinda Animal Husbandry introduced the equipment for the first time in 2004. After more than 10 years of exploration, it has gained some experience. From the first 500 sows to the current 25,000 sows, from the initial liquid feeding system to the current three liquid feeding systems, this year will invest in five more liquid feeding lines. The reason why so many liquid feeding systems have been developed is that the system has the following five major advantages.
1, high degree of intelligence, improve work efficiency
2, the operation is accurate, easy to sow fine management
3, reduce feed exposure, purify pigsty environment
4, feed conversion rate is high, improve production capacity
5, feed raw materials are abundant, reduce feed cost