After laboratory tests, the dry matter contained in leeks contains 27.5% of crude protein, 2.28 megacalories/kg of metabolic energy, 10.3% of crude fiber, contains a lot of vitamins and trace elements, and also contains anti-biomass and volatile aromatic oils. Therefore, feeding chicken with leeks has the effects of increasing nutrition, killing bacteria, and promoting appetite.
According to the experience summarized by the chicken farm, the leeks used are moderate, too old, too much crude fiber, affecting the feeding effect, and too tender have a high moisture content and less dry matter. The chicks can be fed on the fourth day after they start eating, and they increase day after day. Usually a chicken feeds up to 25 grams a day. Before the feeding, the leek must be washed and dried, cut into about 1 cm long, and mix in the compound feed. Do not add water to the feed. The best is to cut, mix, feed now. If you feed leeks, you do not need to feed any other green feed. If the leek is cut off, green onions or garlic sprouts can be used instead, but spinach should be avoided to prevent rickets in the flock. Wait for the new leeks to come on the market and continue feeding as above.
Catalysts can induce chemical reactions to change and make chemical reactions faster or slower. Catalysts are also called catalysts in industry. The composition, chemical properties and quality of the catalyst did not change before and after the reaction. It mainly includes solid acid-base catalyst, molecular sieve catalyst, metal catalyst, metal oxide and metal sulfide catalyst, and complex catalyst.
1. Acid-base catalysts: Petroleum refining and petrochemical industry are the largest application fields of catalysts, occupying an important position in the national economy. Acid catalysis plays an important role in petroleum refining and petrochemical industry. Solid acids are further divided into Blans Te Um (B acid) and Lewis acid (L acid). Typical solid base catalysts: MgO, CaO, SrO2, etc; typical solid L acid catalysts: AlCl3, FeCl3, etc.
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