94 results about "Brine shrimp" patented technology

The invention discloses a river crab cultivation method. The river crab cultivation method comprises preparing a cultivation site; irrigating water 15 days before crab seeds are put into the cultivation site and enabling the height of a water surface to keep between 10 and 12 cm; sterilizing the cultivation site; pouring water to enable the height of the water amount to be increased to 25 to 30 cm 8 to 10 days before crab seed putting, sterilizing the cultivation site through quick lime emulsion and oxygenating a cultivation pond through an oxygenating machine 24 hours after the sterilization; planting alligator weeds on the water surface; immersing the crab seeds through salt solutions with the concentration to be in 3.5 to 4.5 % for 8 to 10 minutes before the crab seeds are put into the cultivation pond and feeding fodder after the crab seeds are put into the cultivation pond; performing daily feeding and management of the crab seeds in the growing period, namely feeding bean curd, small trash fish cream and adult brine shrimps at the initial stage after the crab seeds are put into the cultivation pond, feeding bean cakes and fish cream after the crab seeds grown into baby crabs and feeding mixed type fodder at the intensive culturing stage of the baby crabs. The river crab cultivation method has the advantages of avoiding seed loss, improving the survival rate of the river crabs, reducing cultivation costs and improving economic benefits due to the fact that the crabs which are cultivated in green houses are fed in combination with reasonably matched fodder.

The invention discloses a turbot fry starter feed formula comprising the composition and content by the mass percentage: 20-35% of white fish meal, 10-20% of a chicken powder, 3-6% of an egg powder, 3-6% of beer yeast, 10-20% of wet brine shrimp, 5-10% of shrimp flesh, 15-20% of flour, 1-3% of betaine, 1-5% of fish oil, 1-3% of phospholipid, 1-2% of a vitamin mixture, 2-4% of a mineral element mixture, and 1-5% of a microorganism preparation. The turbot fry starter feed formula has the advantages of high raw material digestion and absorption utilization rate, strong feeding attraction, safety and reliability, stable quality, health, comprehensive nutrition, and convenience in use, can promote the fry metamorphosis development, improves growth performance, and improves the disease-resistant and anti-stress abilities of fry, increases the survival rate, and is suitable for large-scale cultivation of the turbot fry.

The invention provides a brine shrimp egg shelling method for decreasing the hatching rate. The method includes the steps of 1) hydrating brine shrimp eggs for 1-3 hours, wherein the salinity of hydrating water is 0-3%; 2) after the brine shrimp eggs absorb water sufficiently, transferring the brine shrimp eggs to shelling liquid and stirring and aerating continuously; 3) enabling the shelling time of the brine shrimp eggs in the shelling liquid to be 5-15 minutes, wherein shelling is complete when the color of the brine shrimp eggs is changed from brown to grey white and to tangerine finally; 4) after shelling is completed, collecting shelled eggs by a 200-mesh screen net and washing the shelled eggs along the edge of a net bag by a great quantity of fresh water, so that damage to the eggs by direct washing is prevented; 5) after the shelled eggs are washed by the fresh water, the washed shelled eggs are washed by sodium thiosulfate solution, or immersing the washed shelled eggs into the sodium thiosulfate solution for dechlorination for 1-2 minutes prior to washing the dechlorinated shelled eggs by the fresh water, so that the shelled brine shrimp eggs are obtained. The hatching rate of the shelled brine shrimp eggs obtained by the method is increased substantially and is up to 86%.

The invention relates to a preparation method and a phosphorus removal method of a zirconium oxide-loading phosphorus removal biological composite material. The preparation method comprises: dissolving zirconium oxychloride in dehydrated alcohol, adding brine shrimp egg shell, carrying out ultrasonic and magnetic stirring at a room temperature to make the zirconium oxychloride gradually diffuse to the inner surface of egg shell pore channels, placing into a water bath pot to evaporate the ethanol, taking the egg shell out, adding the zirconium oxychloride-loading egg shell to a NaOH solution, carrying out mechanical stirring at a room temperature, carrying out in situ precipitation to produce zirconium hydroxide in the egg shell pore channels, filtering, washing the shell egg complex a plurality of times with distilled water until achieving the neutral state, and drying in a drying oven to prepare the zirconium oxide-loading brine shrimp egg shell biological composite material. The phosphorus removal method comprises that: phosphate-containing sewage passes through a cylindrical fixed bed absorption device filled with the zirconium oxide-loading brine shrimp egg shell biological composite material in a forward flow manner so as to efficiently purify the phosphate-containing sewage; the composite material after absorption is subjected to desorption by using a NaOH and NaCl mixing solution, and the desorbed composite material is subjected to water washing by using deionized water to achieve the neutral state so as to be recycled.

Devices, such as solid supports having metal binding proteins, such as metallothionein proteins, bound thereto are disclosed for removing metals from substrates in need of having such metals removed therefrom. Specifically membranes having metallothionein proteins from the brine shrimp Artemia are disclosed for removing metals from liquid substrates. Associated methods for removing metals from substrates using metallothionein proteins are also disclosed.

The invention provides an epinephelus septemfasciatus parent fish reproduction and maturing bait and a preparation method thereof. The epinephelus septemfasciatus parent fish reproduction and maturing bait is formed by following components in percentage: 30% of artificially-matched powder feed (main components comprise fish meal, starch, soybean meal powder, peanut bran powder and the like), 10% of opossum shrimp powder, 10% of oyster / mya arenaria linnaens meat (fresh and alive products or chilled products), 20% of sardinella zunasi (chilled products), 3.2% of concentrated micro-mud marimo, 10% of loligo japonica (fresh and alive products or chilled products), 10% of clam worms (fresh and alive products or chilled products), 5% of brine shrimp powder, 0.5% of compound vitamin, 0.4% of astragalus membranaceus powder, 0.4% of lecithin powder and 0.5% of immune polysaccharides. The bait disclosed by the invention not only can guarantee the nutritional requirement of parent fish, but also can effectively improve the developmental rate of parent fish sexual glands, accelerate the sexual glands to synchronously develop and improve the egg laying amount and the ovum quality of female parent fish, so as to lay a foundation for large-scale larval rearing of epinephelus septemfasciatus.

Devices, such as solid supports having metal binding proteins, such as metallothionein proteins, bound thereto are disclosed for removing metals from substrates in need of having such metals removed therefrom. Specifically membranes having metallothionein proteins from the brine shrimp Artemia are disclosed for removing metals from liquid substrates. Associated methods for removing metals from substrates using metallothionein proteins are also disclosed.