The basic knowledge and application of green feed

First, the concept of green feed The green feed refers to the fresh stems and leaves of plants that can be used as feed. The green feed derived from the rich in chlorophyll mainly includes natural grasses, cultivated pastures, field weeds, lettuces, aquatic plants, twigs, etc. . The rational use of green feed can save costs and improve the efficiency of farming.
Second, the application of green feed Green feed in the breeding industry is widely used. Among them, there are many applications in pig raising and fish farming.
1. In the process of raising pigs During the pig raising process, green fodder can not be used as a main ingredient, and can only be used as a supplementary material and in appropriate amounts. Growing and finishing pigs can generally substitute 10% to 15% of the concentrate (calculated as dry matter). The sow has a better feeding effect and can substitute 20% to 25% of the concentrate, and the piglets can eat freely.
From late spring to summer and early summer, a variety of green feed and wild plants thrived. In rural areas, some pig farmers and specialized households collect these green and succulent feeds to feed pigs. This practice should be strongly advocated. In addition to feeding the pigs with fresh green fodder, the green fodder can be blister-fermented and then fed to pigs. The effect will be better. Collect the grass and wild vegetables or leaves, etc., and chop them into cylinders or concrete pools. Press the layers tightly, press the stones, and then fill with clear water. The water should be kept immersed in the feed 2-3 inches without exposing the feed to the water. After immersed in 4-5 days, the lactic acid bacteria in water and grass grow and multiply, which means that they become slightly sour fermented feed. This blistering fermented feed has a sweet and sour taste, and pigs like it very much. If it is possible to ferment fermented glutinous water, ground water, bean curd residue, bran, distiller's grains, glutinous rice, etc. into the tank or the pool, the effect will be better. The amount of green succulent feed is about 4-5 inches thick; bean curd residue, bran, distiller's grains, glutinous rice, etc. account for 2-3 inches; the layers are pressed tightly, the stone is pressed, and then the water, slurry and water are added. Into the tank or tank, after 4-5 days of fermentation can feed the pig. With this blister fermentation method, a number of cylinders or pools should be set at the same time according to the number of pigs to be used in turn.
2. Application of green feed in fish farming (1) Selection of suitable green feed varieties The most common excellent green feeds are ryegrass, sudan grass, elephant grass, pine cone herb, duckweed, etc. Different green feed has different nutritional value. . In the different growth stages of fish, different fine green fodder should be selected. In the production, it can be selected according to the degree of difficulty in obtaining green feed and the needs of the fish in different growth stages.
(2) Proper timing Green feed contains different nutrients at different growth stages. Castors that are not timely castrated are often due to a high degree of lignification, leading to a significant reduction in fish utilization of feed. In general, quail-type green fodder should be castrated at the time of heading, and legume-type green fodder should be castrated at the early stage of flowering. After the cut green feed is fed in a timely manner, it will take a long time to store. Not only the nutrients will be easily lost, but also the palatability will deteriorate.
(3) Modulation into fish culture can be fed directly to castrated green fodder. If used for fry cultivation, green feed should be chopped or beaten. Fermentation methods can also be adopted to increase the palatability and utilization of green feed. If the peanut is poor in palatability, it cannot be digested and absorbed directly by the fish, but after fermentation, the fish can be consumed.

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