1, hollow through the grass
Alias: Chase grass, pass off wood.
Source: dried stem pith for the five-Acacia shrub or small tree plant. Mostly wild.
Origin: Mainly produced in Guizhou, Yunnan, Sichuan, Guangxi and Taiwan.
Character identification: stem and marrow cylindrical, about 30 to 50 cm in length, 1.5 to 2 cm in diameter. The surface is clean white with longitudinal texture. The center has a semi-transparent circular film with a diameter of about 0.5 to 1 cm. The body is extremely light and loose, floating in water and hygroscopic. Easy to break, flat fracture surface, silvery white flash. Qi and tasteless.
The bar is thick, white, and the central film is better.
2, solid through the grass
Alias: small pass grass, pass grass stick.
Source: dried stem pith of the tree and its genus of the small arborous plant tree. Are wild.
Origin: Sichuan, Hubei, Jiangxi, Guangxi, Shanxi, Gansu and other places.
Identification of traits: stem and marrow are thin cylindrical, varying length, diameter 0.4 to 1 cm. The surface is white or yellowish, platform, no longitudinal texture, soft, flexible, can be deformed by pinching. Cross-section white, no hollow. After water immersion, both the appearance and the section are sticky and smooth. Qi and tasteless.
Evenly, white, and no mold is better.
Plant extracts powder have the characteristics of green, environmental protection, and safety, and it has been emphasized in culture applications, and it has gradually become a research hotspot, and it has gradually become a positive and productive alternative to antibiotics after feed resistance prohibition.
Plant Extract (PE) is a single or mixed substance obtained from plants by physical and chemical means, which contains polyphenols, alkaloids, polysaccharides, essential oils and other active substances. Polyphenols are the most abundant active components of PE, which have antioxidant, anti-inflammatory, antibacterial and anti-tumor activities. Similarly, other components (e.g., flavonoids, alkaloids) have multiple biological functions.
The Catalogue of Feed Ingredients contains 117 natural plant extracts, such as anise oil, basil oil, cinnamon oil, clove bud oil, orange oil, lost essential oil, oregano oil, and thyme essential oil.
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