7 results about "Hatchery" patented technology

The utility model relates to an aquatic fry incubator, aim at solving the technical problem of inconveniently cleaning the incubation tank in the incubator and inconveniently pouring water at present, including the hatchery box body, the box cover and the fry releasing structure, the box cover rotation is connected in the hatchery box body flip cover department, the fry releasing structure is arranged in the hatchery box body fry -rearing area, the fry releasing structure includes end handle A, end handle B, hatchery groove A and hatchery groove B, end handle A is worn in one end hole in the hatchery box body top, end handle B is worn in the other end hole in the hatchery box body top, a plurality of hatchery groove A is sequentially arranged in the end handle A inner end, a plurality of hatchery groove B is sequentially arranged in the end handle B inner end, a plurality of hatchery groove A and a plurality of hatchery groove B staggered insertion, the utility model has the hatchery groove A and hatchery groove B combination in the hatchery box body and hatchery groove A and hatchery groove B can be separated and drawn out, and the advantage that conveniently cleaning is carried out outside.

The utility model belongs to the aquaculture technical field, concretely relates to a pufferfish trapping device suitable for the cabin breeding mode of a breeding work ship, which is installed on the inner wall of the breeding cabin of the breeding work ship and comprises a trapping cage, a lifting device for realizing the lifting movement of the trapping cage along the inner wall of the breeding cabin, a fish-attracting lamp installed on the net cover of the trapping cage, and a fake bait assembly capable of rotating in the trapping cage. The utility model is suitable for the specific scene environment of the breeding cabin of the breeding work ship, can efficiently trap the pufferfish in the breeding cabin through the double trapping means of light and fake bait, reduces the damage of the pufferfish to the large yellow croakers in the breeding cabin, and ensures the safety of the breeding environment.

The present utility model relates to a process for producing feed for saline-tolerant tilapia (Oreochromis niloticus) fry and fingerlings using a β-cyclodextrin-encapsulated lemongrass essential oil-based feed additive. The utility model addresses the technical problem of incorporating volatile antimicrobial essential oils into aquaculture feed while maintaining their stability, uniform distribution, and compatibility with conventional feed pellet manufacturing. The process comprises preparing a dry feed mixture, combining the encapsulated feed additive with a binding agent, gradually incorporating the resulting liquid mixture into the dry feed mixture, pelletizing, drying, and storing the feed pellets. The process produces nutritionally balanced feed containing uniformly distributed encapsulated lemongrass essential oil with improved stability and handling characteristics. The disclosed process is particularly useful for producing feed for hatchery and nursery culture of saline-tolerant tilapia fry and fingerlings as a practical alternative to conventional antibiotic-based feed production.

The present invention relates to a method for incubating a plurality of poultry eggs in a hatchery, comprising the step of controlling the heating of the plurality of poultry eggs in a multi-stage egg heating process until hatching occurs, wherein the multi-stage egg heating process comprises at least an initial incubation stage of uniformly heating the plurality of poultry eggs from physiological zero to incubation temperature during an initial incubation period of 4 to 8 days, and a subsequent main incubation period of maintaining the plurality of eggs at the incubation temperature.

The present utility model relates to a process for producing feed for saline-tolerant tilapia (Oreochromis niloticus) fry and fingerlings using a β-cyclodextrinencapsulated citronella (Cymbopogon nardus) essential oil-based feed additive. The utility model addresses the technical problem of uniformly applying a volatile antimicrobial feed additive onto feed pellets while preserving its stability and compatibility with conventional feed production. The process comprises preparing a liquid coating mixture by combining the encapsulated feed additive with a binding agent, applying the coating mixture onto feed pellets through thorough mixing, and drying the coated pellets under controlled ambient conditions. The process produces feed pellets with substantially uniform coating, improved adhesion, and enhanced stability of the encapsulated citronella essential oil. The disclosed process is particularly useful for producing antimicrobial feed for hatchery and nursery culture of saline-tolerant tilapia fry and fingerlings as a practical alternative to conventional antibiotic-based feed preparation.

The present invention relates to a method for high-density milkfish larval rearing comprising the steps of cleaning and chlorinating a culture tanks overnight; rinsing culture tanks and installing aeration lines and air stones; stocking a dechlorinated seawater; adding green algae (Nannochloropsis sp.) at a density of 1 X 106 cells / ml; stocking a milkfish larvae at stocking density of 60 to 120 milkfish larvae per liter; feeding the stocked milkfish larvae with rotifer, Artemia, and artificial diet; adding probiotics; partially changing the dechlorinated seawater daily; and employing flow-through system to the culture tanks between 6 PM to 8 AM starting on day 9 up to the harvest period of the milkfish larvae. By increasing larval stocking density, production capacity of the hatchery is increased, and disposal of milkfish eggs is minimized. The disclosed method improves the production cost and returns in milkfish hatchery operations without affecting the fry quality.