With the increase of large-scale swine breeding, its drawbacks have gradually emerged. In particular, the decline in litter quality caused by excessive use of concentrates in breeding herds and the sudden death of pregnant sows in winter have attracted widespread attention in the industry. From the results of using alfalfa, the effect is very obvious. The main difference is that the birth interval is significantly shortened, and the number of litter size and litter size are greatly improved, and the sudden death of sows in winter pregnancy is significantly reduced. Here are some green feeds: Alfalfa is a perennial herb of the leguminous family. It is characterized by strong adaptability, high yield, and good quality. It generally produces 2000-4000 kg per mu. The nutritional content of earthworms is relatively high. Based on dry matter, alfalfa per kg of early flowering period contains about 20% of crude protein, 4.5% of crude fat, and 36% of nitrogen-free extract, and the content of A and B vitamins is large. The current form of use is to directly feed the green feed to a small 5-10 cm section, which is commonly used in small and medium-sized pig farms in summer. In winter, the wolfberry is dehydrated or dried to make glutinous flour or granules for use in compound feeds. Additions in full-priced feeds are generally 5%-15%. Feeding of fresh pigs is about 1-2kg per day. Pregnancy should be fed more properly because of its good palatability and due to high fiber content, reducing the turmoil caused by hunger during the control period and increasing the survival rate of embryos.苜蓿 Generally four miles per year (two years in the first year), the first in Beijing is around the middle of April of each year. Generally every 20-30 days. We must pay attention to weeding and fertilization in management. In particular, the weeding in the rainy season must be timely, otherwise it will affect the production of alfalfa. In addition, the harvest time must be selected before flowering. At this time, the nutritional value is high and palatability is good. In particular, the crude fiber content is suitable. Under normal circumstances, the yield and quality of alfalfa gradually decline with the increase of the growth period, especially the poor management, so it is best to replant once every five years. The bitter wormwood is an alias for bitter leeks. After many years of domestication and breeding, it has become an excellent and high-yield forage crop widely cultivated. The fresh crude protein of bitter buckwheat is 2.6%. Its lysine, threonine and isoleucine content is about 0.16%, and its nutritional value is high. Mu produce 5000-7000kg. The bitter leeks are tender, juicy and slightly bitter in taste. They have good palatability for pigs, promote appetite, and have a stomachic effect. Use in production helps prevent constipation and increase milk yield. The form of use is often beaten or cut and fed. Generally, the daily sow feed amount is 5-8kg. Water hyacinth grows more in the south and has the characteristics of rapid growth, high yield, strong adaptability and convenient management. Can make sow's green feed. But the nutritional value is lower. There are many aliases for leeks, and annual herbaceous plants are planted throughout China. Features Summer feed crops with strong adaptability, extensive management, high yield, and strong regenerative ability can be fed raw and fed. The content of crude protein in leek dry matter is about 12.5%. General beating or chopped feeding. The disadvantage is that the growth period is short. Carrots are planted throughout China. Features: Easy to cultivate, resistant to storage, rich in nutrients, human and livestock can eat. Its nutritional value is high, generally about 6% sugar, VA36mg/kg carotene 21.1mg/kg and strong activity. Good palatability and high digestibility for pigs. Breeding more pigs can increase fertility and lactation. The biggest advantage is the low cost that can be used throughout the year. (can be stored in winter). It is the main green feed for pig farms in the north. Usage: Cut into small pieces or beating. The vast number of farmers can timely add appropriate amounts of green and blue feeds according to different situations and different regions to better promote the growth of pigs.
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