Silage Technical Answers (2)

6. How to improve the quality of silage? Answer: To improve the quality of silage, the following key points need attention. (1) Control of the moisture of silage materials: The moisture content of the crop during silage is one of the key links in determining the quality of silage. It has been proved that the silage of most silage crops is ideal when the moisture content of the silage material is 65% to 70%. If the water content of the raw material is too low, it is not easy to step on the kiln and retain a large amount of air, which is beneficial to the propagation of molds, saprophytic bacteria, etc., and makes the silage rotten and deteriorated; if the water content of raw materials is too high, the concentration of sugar content is reduced, The silage is made sticky and sticky, and it can produce higher acidity. Beef cattle do not like to eat, and their feed intake is reduced. To make the moisture content of silage raw materials meet the specified requirements (ie moisture content of 65% to 70%), first, the silage crops should be harvested in the near future (ie, the whole plant with spiked green corn has 3 to 4 in the lower part of the whole tree) The leaves turn brown; in the case of pure silage cornstalk, when the corn is basically mature, there are more than half of the corn stalks in the leaves.) Secondly, if the moisture content of the raw material is too high, it may be properly air-dried and then stored or properly blended with coarse crushed, crushed hay, etc., to adjust the moisture content; if the raw material has too little water content, the water may be appropriately and uniformly distributed or appropriately mixed with moisture. Lots of green and juicy feed. The proper moisture content should be hand gripping the raw material, and it is better to let the fingers stick out of the water without dropping down. (2) The silage raw material contains a certain amount of sugar: the level of sugar content is the main condition affecting the silage quality. When the raw material has low sugar content and contains many proteins (such as peanut amaranth, soybean stalk, alfalfa grass, etc.), silage alone is not suitable. , It is better to mix silage with raw materials containing many sugars. (3) Quickly install kiln and capping: Once feed silage begins, it is necessary to concentrate manpower and material resources, and cut, transport, chop, and install kiln at the same time. Quickly installing kiln and capping will help shorten the aerobic fermentation time during silage and improve the quality of silage. And to install uniform kiln, pay attention to compaction; cap should be tight, to prevent leakage, breathable. 7. How do you know if the quality of silage is good or bad? Answer: The quality of silage can be judged after a sensory inspection. (1) Sampling method: After the kiln is opened, go deep into the silo kiln at a depth of 20 cm. According to the three-point sampling method, each hand should be examined. (2) Judgment criteria: 1 is better: the color is greenish green or yellowish green, close to the primary color and shiny. Its scent is fragrant and the wine's sourness gives a sense of comfort. Its texture structure is moist and tight, but it is easy to separate and stems, flowers, and leaves remain the same. 2 General: The color is yellowish brown or dark, its smell is pungent sour and its fragrance is light. Its texture is slightly more moisture, soft, stems, flowers, leaves can be distinguished. 3 failed: its color is black or brown. Its smell is pungent, corrupt or musty. Its texture is rotted, sticky, agglomerated or over-dried, not structural. 8. What are the main causes of poor quality silage? A: There are two types of quality silage: One is rancid silage. This kind of silage has insufficient sourness, has obvious rancid odor, has a pungent sensation, is mostly dark green, has a high water content, and feels sticky when touched by hand. This rancidity silage poor palatability, nutritional value is very low, if the beef cattle eat too much can cause diarrhea. The main reason for this poor quality feed is that the silage material is not harvested within a suitable period of time, the water content is too high, it is not dried, or it is caused by rainwater entering the silage process and after silage. Another poor quality silage is coked silage with a burnt or musty brown or dark brown color. Its low moisture content, poor palatability, low nutritional value. The reason is that the silage material is too mature and the harvest is too late. The raw material is cut too long, it is not easy to compact or the kiln is not timely, the delay is too long, and the cap is too late, resulting in too much heat for the silage material due to oxidation.

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