Protect seedlings and healthy seedlings＇category

Improve immunity and disease resistance

Biological characteristics of marine Rho-dotorula benthica

Marine Rho-dotorula benthica is a single celled eukaryote, which is mostly isolated from sea mud. Its individual length is about 4-6 microns, and it has good suspension and palatability in water. Marine Rho-dotorula benthica can adapt to the marine environment, with fast propagation speed and abundant metabolites, especially B vitamins, carotenoids and carotenoids, most of which are astaxanthin.

Astaxanthin: also known as astaxanthin and lobster shell pigment, astaxanthin has the strongest antioxidant activity in nature, which is 6000 times more effective than vitamin C. Astaxanthin can effectively remove oxygen free radicals in cells, enhance cell regeneration ability, maintain body balance, greatly improve immunity of aquatic animals, promote gonadal development of sexually mature individuals, and improve meat quality and taste.

Application 1: Starter feed and nutrition fortifier for aquatic animal larva.

Principle: Marine Rho-dotorula benthica has good suspending ability in water, strong palatability, rich in vitamins, unsaturated fatty acids and astaxanthin, and cell wall is rich in immune polysaccharides, so it can greatly strengthen the nutrition and immunity of larvae and promote their rapid growth.

Usage: in the larval stage, it can be directly sprinkled into the water body, and the dosage is generally 1-3ppm. Shrimp and crab larva: can be mixed with feed (5-10g / kg feed).

Application 2: to promote the rapid development and maturation of gonads of aquatic animals.

Principle:

There are five stages of gonadal development: resting stage, proliferating stage, growing stage, mature stage and discharging stage.

Characteristics of each period:

Resting period: gonad does not develop, follicle is cavity.

Proliferative phase: the number of germ cells in follicular wall began to increase (biological zero of gonadal development).

Growth phase: the reproduction  protocells grow into reproduction mother cells.

Mature stage: there is no gap in the follicular cavity and it is full of mature germ cells.

Discharge period: follicular cavity began to empty gradually.

It can be seen that the proliferative stage, growth stage and mature stage are the periods of rapid development and maturation of gonads,
therefore, the use of marine Rho-dotorula benthica should be increased from the proliferation stage (biological zero degree) to the mature stage. The corresponding water temperatures of the three periods are as follows:

Sea cucumber: 8-15 ℃.

Giant Ezo Scallop: 4-8 ℃.

Bay Scallop: 7-14 ℃.

Oyster: 13-23 ℃.

Scapharca broughtonii: 14-24 ℃.

Meretrix meretrix Linnaeus: 8-21 ℃.

Usage method:
For shellfish, the product can be directly spilled into the water (1-3ppm),
For sea cucumbers, the mixture of this product and feed (such as oyster shell powder) has the best feeding effect (5g-10g / kg feed),
For shrimps and crabs, mix the product with feed (3g-5g / kg feed).

Application 3: improve the body color and meat taste of aquatic animals.

Principle: astaxanthin is a kind of pigment, which can make salmon, shrimp, crab, etc. appear red. After eating astaxanthin, crustaceans will store this pigment in the shell and combine it with protein, so their appearance appears red, meat quality and taste are greatly improved, so it can be used to improve shrimp body color (darkening) and taste.

Usage: feed the mixture of this product and feed (3-5g / kg feed).


Raw material composition: Rhodotorula benthica.

Product composition: total bacterial count ≥ 8 × 10 ^ 10 cfu / g, astaxanthin ≥ 600 μ g / g thallus, water content ≤ 8%.

Product features:

1. Strain optimization: the strain of this product is optimized and rich in high concentration astaxanthin (β - carotene), which is conducive to enhancing the reproductive capacity of parent shellfish and parent shrimp, and improving the immunity and survival rate of juvenile sea cucumber seedlings.

2. Rich in active substances: This product adopts a unique method to cultivate highly active bacteria, enriches and absorbs a variety of active ingredients in sea mud, and is rich in unsaturated fatty acids, immune polysaccharides, etc., which can effectively strengthen the nutritional ratio of juvenile sea cucumber, adult sea cucumber and high-density shrimp culture, and improve immunity and disease resistance.

1.High active bacteria: the product is prepared by low speed centrifugation and freeze-drying, which maintains the high active state of marine Rho-dotorula benthica. It can continue to grow in nursery and aquaculture water, absorb toxic substances such as ammonia nitrogen, antagonize and inhibit pathogenic bacteria such as Vibrio luminescens, and effectively improve water quality conditions.


Scope of application:

1. Parent Cultivation: the cultivation of sea cucumber, shellfish, shrimp and crab, fish parents and rotifer enhancement.

2. Protection and Cultivation: sea cucumber, abalone, shrimp and crab, eel, mandarin fish, grouper and other aquatic animals.

Usage and dosage:

1. When in use, the product can be directly mixed with other baits, or diluted and sprinkled in the whole pool.

2. For parent feeding: add 1g-2g per kg feed.

3. Feed for larva breeding: feed 2g-8g per cubic meter of water, 4-6 times a day.

4. For the cultivation of aquatic animals: add 0.2g-0.5g of this product per kilogram, mix well and feed.

5. For rotifer enhancement: according to 10g-15g Rhodotorula  benthica / 100 million rotifer · day, combined with other feeds, feeding twice-4 times.

Storage and shelf life: store in a cool and dry place, keep moisture-proof, and use as soon as possible after opening. The shelf life under normal temp