6 results about "Leiocassis longirostris" patented technology

The invention discloses a leiocassis longirostris fry large-scale cultivation method based on a facility circulating water system, and relates to the field of artificial breeding, and the method comprises the steps of indoor parent intensive cultivation, fertilized egg batch acquisition, fry incubation in a loop incubation pond, fry large-scale cultivation and the like. And water purification treatment and efficient oxygenation are realized. Different circulating water operation modes are adopted in the seedling breeding and domestication cultivation process, the optimal breeding ecological condition is provided, and the process is controllable. According to the Leiocassis longirostris fry hatching and breeding method, the Leiocassis longirostris fry hatching and breeding based on circulating water are adopted for Leiocassis longirostris fry large-scale breeding of a facility circulating water system, accurate control over the Leiocassis longirostris hatching process can be achieved, water quality stability is achieved, the water temperature can be accurately controlled, and water changing and wastewater discharging in the whole process are avoided.

The invention discloses a processing method of high-quality quick-frozen leiocassis longirostris fillets, which comprises the following steps: (1) selecting fresh leiocassis longirostris, slaughtering, cutting into fillets, cleaning and draining; (2) precooling the leiocassis longirostris slices in a dipping freezing liquid; and (3) putting the precooled fish slices into a mixed protective solution of quince seed mucus, fishing out the fish slices, immediately feeding the fish slices into a liquid nitrogen quick-freezing cabinet to freeze the fish slices, and then putting the fish slices into a refrigeration house to be frozen. According to the preparation method disclosed by the invention, a layer of gel coating which takes quince seed mucus as a base material and is added with citrus essential oil is constructed on the surface of the fillet, and the coating is used as a macroscopic physical barrier, so that juice loss of the fillet can be effectively reduced, lipid oxidation can be inhibited, microbial invasion can be blocked, and mechanical support can be provided to prevent freeze cracking. By adopting a dipping pre-cooling mode, the fish meat quality can be well maintained, and meanwhile, the consumption of liquid nitrogen during freezing is reduced.

The invention discloses a drying device for producing leiocassis longirostris feed, and belongs to the technical field of fish feed drying. A drying device for leiocassis longirostris feed production comprises an air supply assembly used for drying materials and suspending materials and a flow channel used for allowing the materials to pass through, and further comprises a vibration assembly used for assisting the air supply assembly in suspending the materials. The air supply assembly comprises an adjustable air supply assembly used for pushing materials to advance, a hot air assembly used for drying the materials and a cold air assembly used for cooling, and the flow channel comprises a main flow channel and a sorting flow channel; according to the drying device, the air supply assembly is arranged and can be used for conducting suspension drying on materials, the adjustable air supply assembly in the air supply assembly is used for pushing the materials to move, the materials with the large water content can move slowly, the materials with the small water content can move fast, then different drying time is achieved, excessive drying or non-drying is avoided, and the drying efficiency is improved. Therefore, the problem that in the prior art, feed drying is not uniform in the fish feed production drying process is solved.

The present application relates to the field of biotechnology, and more particularly to a primer, kit and method for identifying Pelteobagrus vachelli, Pelteobagrus nitidus, Leiocassis longirostris and their hybrids, wherein the forward and reverse primer sequences in the primer are shown in SEQ ID NO: 1 and SEQ ID NO: 2, respectively. The present application uses fin strip micro samples for DNA extraction, and then completes species identification through PCR amplification combined with agarose gel electrophoresis technology. The detection result has high accuracy and strong genetic marker specificity, and is not subject to the growth of the fish body. The fish body can be sampled and identified at each breeding stage, thereby providing important technical support for aquatic breeding management.

The application relates to the field of aquaculture, in particular to a culture method of longsnout catfish (Leiocassis longirostris) in the culture of penaeus vannamei, which comprises the following steps: pond preparation, fry stocking, feed feeding, water quality management, daily management, fishing and harvesting, etc. The application establishes a multi-nutrient level culture mode of fish and shrimp symbiosis, fully utilizes the water space of the culture pond of penaeus vannamei, improves the water utilization rate of the pond, improves the production efficiency, utilizes the habits of longsnout catfish and penaeus vannamei, plays the effect of fish and shrimp ecological comprehensive disease prevention, improves the growth environment of fish, improves the feed utilization rate, reduces the total feed coefficient, reduces the wastewater discharge, and improves the energy efficiency of aquaculture. The application is simple in operation and easy to popularize.

This invention discloses a method and system for regulating the hatching environment of *Catfish simonii* based on multi-parameter sensing via the Internet of Things (IoT), specifically relating to the field of multivariable environment automatic control technology. It addresses the problem of inaccurate multivariable control commands in existing collaborative control methods due to reliance on distorted data when sensing network dynamics. By acquiring multi-parameter monitoring data of the water body, network topology information, and equipment status data, it establishes spatial gradient change predictions for key parameters to diagnose node performance degradation and detects equipment start-up and shutdown events to analyze transient response curves and determine abnormal coupling relationships. Subsequently, it identifies affected parameters and regions, and performs reliability assessment and correction on data from degraded nodes. Finally, based on the corrected reliable data, it generates collaborative control commands for heating, aeration, and water flow equipment. This achieves robust collaborative control under conditions of sensing uncertainty, improving the stability and accuracy of multivariable environment control.