2, feeding amount. Urea replaces 20% to 30% of crude protein in the diet, and the rest of the protein is obtained from the diet. The amount of urea fed should be 0.02%-0.05 of body weight; if calculated on the dry matter content of the diet, urea should account for 1%-2% of dry matter in the diet.
3, feeding method. In order to use urea effectively and prevent poisoning, when feeding urea, urea must be uniformly stirred in the crude concentrate feed to feed, can not feed urea alone, and can not be dissolved in water for drinking, otherwise it will enter the stomach with water, Causes poisoning. After feeding urea, you cannot drink water immediately. Generally, you drink water after half an hour of feeding.
4, gradually increase the amount. When the urea was fed for the first time, the feed amount was 1/10 of the normal feed, which allowed the microorganisms in the rumen to gradually adapt, and then gradually increased to the normal total feed, which took about 10-15 days to reach the normal total feed amount. Continuous feeding of urea works well. If the feeding is interrupted in the middle and the urea is fed again, the feeding method should be started.
5, other. It is strictly forbidden to feed raw materials containing urease, such as raw beans, raw bean cakes, lotus root starch, etc., in the feed containing urea. There are several cases where urea cannot be fed, such as lambs and yaks within three and a half months, because Their rumen function is not perfect; cattle and sheep are in starvation state or fasting; diseased cattle and sheep can not feed urea, otherwise it is easy to introduce poisoning. If there is urea poisoning symptoms, intravenous injection of glucose or calcium gluconate injection.
Optical Lenses are optical components designed to focus or diverge light. Optical Lenses, which may consist of a single or multiple elements, are used in a wide variety of applications from microscopy to laser processing.
Worldhawk can supply high precision Plano Convex Lens, Double Convex Lens , Plano Concave Lens, Double Concave Lens, Meniscus Lens , Achromatic Lens and Aspheric Lens.
Optical glass lenses have a wide variety of applications. Germanium (Ge), Silicon (Si), or Zinc Selenide (ZnSe) lenses are ideal for transmitting the Infrared (IR) spectrum, while Fused Silica is well suited for the Ultraviolet (UV).
Double Concave Lens,Optics Double Concave Lens,Glass Double Concave Lens,Spherical Double Concave Lens
ChangChun Worldhawk Optics Co.,Ltd , https://www.worldhawk-optics.com