Feeding urea to cattle in summer and autumn

Urea is digested by microorganisms in the rumen of cows to synthesize bacterial protein, which can replace part of the protein feed and is a protein supplement feed for cattle. However, urea is not a protein after all, and its utilization efficiency is affected by many conditions. The addition of urea to cattle is only suitable for the winter and spring seasons, which mainly include wheat straw, dry corn stalks, hay, and other coarse feeds, and it is unfavorable to feed urea in summer and autumn seasons, which are dominated by green feed.
Experiments have shown that when the crude protein in the feed is below 11%, the utilization rate of urea in the rumen is about 70%. The effect on the weight gain of cattle is also obvious (increased by 39%); with the increase of the crude protein content in feed, the effect of increasing weight gain is reduced when urea is fed, and when the content of crude protein in feed reaches more than 12%, Feeding urea has not increased the effect of weight gain, but has begun to affect weight gain or significant weight loss.
In summer and autumn, there are many kinds of wild vegetables, weeds, and pastures, and cattle often use green feed. In the green feed, the nutrients contained are relatively comprehensive, especially the crude protein content is high, generally 12% to 20%, the crude protein digestion and utilization rate is also very high, generally more than 70%, the crude protein quality is excellent, contains the necessary Amino acids are more comprehensive and their nutritional value is higher. Therefore, the continued feeding of urea in summer and autumn seasons dominated by green feed will not only not achieve the desired results, but will also have the opposite effect.

The main raw materials of Cosmetic Raw Materials are commonly used as matrix raw materials and auxiliary materials. The general base materials for cosmetics are mainly oily materials, including oils, waxes, hydrocarbons, fatty acids and alcohols. Its oily raw material is the most widely used raw material in cosmetics. It plays a role in protecting, moisturizing and softening the skin in skin care products, and plays a stereotyping and beautifying role in hair care products. Auxiliary materials are used to prevent oil, wax, hydrocarbons and other oily components of cosmetics from contacting oxygen in the air, oxidizing, producing peroxides, aldehydes, acids and so on. They are discoloration, rancidity and quality deterioration of cosmetics. Some auxiliary materials need to be added to cosmetics. Auxiliary materials include:

1. Surfactant, which can reduce the surface tension of water, has the functions of decontamination, wetting, dispersing, foaming, emulsifying and thickening, is known as industrial monosodium glutamate.

2. Moisturizers are essential ingredients for cream cosmetics. Their function is to prevent cream from drying and cracking and to keep skin moisture.

3. adhesive, mainly used for hair gel, mousse and gel mask.

4. powder is mainly used for making powder products.

5. pigment and dyestuff are mainly used for making beauty modification products.

6. Preservatives and antioxidants inhibit the growth of microorganisms during the shelf-life of cosmetics and the use of consumers; fragrances, increase the fragrance of cosmetics, improve the value of products.

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