China's rainbow trout fertilized egg hatching barrel incubator, requiring flow hatching, fertilized egg incubation period is relatively long, under normal circumstances the incubation period of 30-60 days, so fertilized egg hatching management during the period is particularly important. Rainbow trout fertilized eggs during hatching should pay attention to the following aspects:
Incubation water, requiring water quality clarification, no impurities and suspended matter, water quality conditions in line with the provisions of GB11607.
Incubation water temperature, suitable water temperature for fertilized egg hatching is 8°C-12°C. The hatching water temperature is lower than 8°C, the development of fertilized eggs is slowed down, and the hatching time is prolonged, which affects the hatching rate of fertilized eggs. The hatching water temperature is higher than 12°C. Although the hatching time is accelerated, it will cause the increase of malformed seedlings, which also affects the hatching rate of fertilized eggs.
The amount of dissolved oxygen requires that the oxygen content of the incubator outlet is 6mg/L, and the dissolved oxygen is too low, which is unfavorable to the embryonic development of fertilized eggs. Even if hatched, a large number of malformed seedlings will appear. The amount of dissolved oxygen is also related to incubation time, low dissolved oxygen, and extended incubation time.
The hatching density and water flow rate were 2-25 thousand eggs per barrel, and the water exchange capacity was 18-20 times/h.
In the light, hatching sites and incubators should be shaded to avoid direct light during hatching of fertilized eggs.
During the sensitive period, fertilized eggs are sensitive to external environmental stimuli during embryonic development, especially when the accumulated temperature is between 45°C and 180°C. A slight agitation can cause fertilized eggs to die.
Esculin Powder is A bitter. Naringin dihydrochalcone obtained by hydrolysis and hydrogenation is a Sweetener, and its sweetness is about 150 times that of sucrose.
It has anti-inflammatory, antibacterial, anti hemagglutination, analgesic and other activities, and has significant diuretic effect on mice. It can inhibit the aldose reductase of rat lens, and it is the growth inhibitor of Bacillus subtilis. At the same time, it can also inhibit the chemical carcinogenesis. It can inhibit the increase of capillary permeability caused by histamine and has a weak analgesic effect. At the same time, it has antibacterial, anticoagulant and inhibition of aldose reductase in rat lens.
Product Name: Esculin Powder
Other Name: Horse Chestnut Extract
Part: Bark
Grade: Food & Medicine Grade
Appearance: White crystalline powder
Specification: 98%
Test Method: HPLC; UV
Esculin, also rendered Aesculin or Asculin, is a coumarin glucoside that naturally occurs in the horse chestnut (Aesculus hippocastanum), California buckeye (Aesculus californica), prickly box (Bursaria spinosa) and in daphnin (the dark green resin of Daphne mesereum). It's also found in dandelion coffee.
1. Anti-inflammation,Anti-cancer, Ease pain, Anti-arrhythmic, Anti-histaminic, Anti- cruor . Esculin is a glycoside composed of glucose and a dihydroxycoumarin compound ;
2. Esculin is a product of a coumarin derivative extracted from the bark of flowering ash (Fraxinus ornus;
3. Esculin is used in the manufacturing of pharmaceuticals with venotonic, capillary- strengthening and antiphlogistic action similar to that of Vitamin P.
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