The number of heads is an important criterion to identify the grade of abalone. The size of abalone is calculated by the number of heads per Sima Jin. As usual, there are 5 abalone, that is, there are 5 abalone per catty.
The number of abalone refers to the size of abalone, which is calculated by the number of abalone per Sima Jin. If it is two per catty, it is called double-headed abalone; Three are called three-headed abalone; ? By analogy, there are several abalones in a catty, and a catty without raw materials is called several abalones. It should be noted that one kilogram here refers to a Sima Jin of 604.79 grams.
Often said 10 abalone, that is, there are 10 abalone per catty. The less the number of abalone, the bigger the abalone, and the more expensive it is. A double-headed abalone is only two abalones per catty, so-called "a thousand dollars can't buy a double-headed abalone".
Extended data:
Main value
nutritive value
Abalone is a traditional and precious food in China. It is one of the eight "seafood treasures" with tender meat and rich flavor, and is known as the "crown of seafood". It is an extremely precious seafood and has always enjoyed a good reputation in the international market.
Abalone is rich in nutrition. Every 100g dry product contains 64g of protein, 2g of fat and 3g of sugar, and it is also rich in many physiologically active substances such as EPA, DHA, taurine and superoxide dismutase.
The contents of metal elements (Ca2＋+,Mg2＋+,etc.) which play an important role in maintaining acid-base balance and neuromuscular excitation are also rich. It was found that abalone muscle hydrolysate can significantly improve the exercise endurance, stress ability and immune function of mice, and at the same time, it can obviously enhance learning and memory.
The supernatant of water extraction from abalone muscle has obvious anticoagulant effect, which has a very significant effect on enhancing the fibrinolytic activity of rabbits, which provides evidence for the blood-activating effect of abalone. There are calcium, phosphorus, iron and other minerals and multivitamins needed by the human body.
life habit
Abalone is very delicate and difficult to breed. If it is not careful, it will be "completely annihilated". Therefore, scientific water purification methods are essential. It is impossible to cultivate abalone with directly imported seawater, and it needs to be purified. Farmers have always used sand filtration technology to purify seawater.
In addition, ultraviolet light seawater purification technology can kill some bacteria and microorganisms that are unfavorable to abalone growth, while retaining microorganisms that are beneficial to abalone growth, which greatly improves the output of abalone and the survival rate of abalone fry by nearly 70%.
Autumn is a season of rapid growth, so it is necessary to feed enough fresh bait every 4 ~ 5 days. In winter, the water temperature is low, and the consumption of abalone is low. Fresh algae will not rot after being soaked in water for 7 ~ 8 days, so it can be fed once every 8 ~10 days in winter.
Note that each feeding should be carried out after removing bait residue and abalone excrement and replacing fresh seawater. Abalone likes to dry young algae. In the absence of fresh algae, dried algae can be used as bait after soaking.
And the mixed effect is the best for algae feeding. Among the algae, Undaria pinnatifida, goose intestines, kelp, horsetail and so on are the favorite algae for abalone, with good bait effect and fast growth rate. The test results of laver, which is rich in local resources, show that it is not ideal and has a great influence on the digestion of abalone.
Baidu Encyclopedia-Abalone