Hairy crab
It belongs to asexual reproduction system. It is a national improved breed. Originated in Fumei Village, Anxi County, Fujian Province, it has a history of more than 80 years of cultivation. Morphological characteristics: shrub type, middle leaf, middle bud species. The plant has no obvious trunk and is divided into two parts. The spring buds germinated in late March, the peak period of one bud and three leaves was in the middle of April, and the 100 buds weighed 69 grams. The buds are thick and fluffy, the internodes are short, processed into green tea, the strips are tight, the buds are exposed, and the fragrance is mellow. The quality characteristics of fresh leaves with one bud and two leaves: tea polyphenols 20.1%, amino acids 3.0%, caffeine 4.0%, total catechin 158.19 mg / g.
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Fish Nutrient Requirements and Formulations
1. Nutritional requirements of cultured fish: The optimal requirements of protein, fat, carbohydrate and other main components in fish feed vary according to technical factors such as fish species, feeding habits, different growth stages, water temperature, water quality and feeding. 2. Formula of fish compound feed: The following introduces several main fish feed formulas for readers 'reference. (1)Compound feed for herring: fish meal 35%, bean cake 47.5%, barley 15%, yeast 1%, minerals 1.5%, plus complex vitamins, feed system
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Definition and classification of fish medicine
Drugs refer to substances that are used to prevent, treat, diagnose diseases and assist the body to restore normal function. As the name implies, fishery medicine refers to the drugs specially used in fishery to ensure the healthy growth of aquatic animals and plants. Therefore, its scope of application is limited to the aquaculture industry, while the substances used in capture fisheries and fishery products processing industry are not included in the category of fishery drugs. Modern aquaculture fisheries are divided into two parts: aquaculture of fish, shrimp, shellfish, turtles and soft-shelled turtles, and aquaculture of aquatic plant species dominated by algae such as porphyra and kelp.
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