7 results about "Food conversion" patented technology

The invention relates to the technical field of monopterus albus fry breeding, and discloses a breeding method for improving the survival rate of monopterus albus fries, which comprises the following steps: (1) egg yolk breeding period: placing water hyacinth in a hatching frame, placing an air dispersing stone at the bottom of the frame, keeping a micro-flowing water state, breeding the monopterus albus fries in the hatching frame at 26-28 DEG C for 5-7 days after the monopterus albus fries are hatched out of membranes, after the egg yolk is completely absorbed, the larva fish later-stage cultivation is performed; (2) at the later stage of fry rearing, the fry are fed with zooplankter live bait for 2-3 days in an open mode; feeding the larva fish for domestication feeding for 3-5 days through tubificidae feeding after the larva fish is opened; (3) a cage culture period: firstly replacing the hatching frame with an indoor cage, continuing to feed with tubificidae for 7-10 days, and then transferring the larva fish into an outdoor cage to feed with tubificidae for 3-5 days; (4) a food conversion culture period: performing food conversion on the larva fish by using food conversion baits formed by mixed baits of tubificidae and micro-capsule materials; the feeding rate is 5-10%, and fish diseases are prevented and controlled daily. According to the scheme, the survival rate of ricefield eel fries is effectively increased to 70%, and the economic benefit of breeding is remarkably increased.

The present application relates to the field of domestication of fish, and particularly relates to an artificial domestication method of Leptobotia rubipinnis. The method comprises the following steps: collecting and transporting wild parent fish, temporarily raising the wild parent fish, and domesticating the wild parent fish. The domestication process of the wild parent fish comprises the following steps: ① feeding biological bait, ② feeding biological bait and artificial compound feed, and ③ feeding artificial compound feed. The method has the advantages of simple operation process, and the use of the segmented temporary raising and domestication, gradual conversion from biological bait to artificial compound feed, and regulation of water flow rate during feeding, so that the death of the parent fish due to starvation is avoided, thereby improving the survival rate (more than 75%), the food conversion rate and the artificial domestication survival rate (≥68%) of the wild parent fish, and providing technical support and basic data accumulation for the artificial propagation, disease prevention and control and artificial propagation and release of Leptobotia rubipinnis.

The invention provides a method for food conversion of silurus meridionalis fries, and belongs to the technical field of food conversion of silurus meridionalis fries. According to the feed conversion method for the silurus meridionalis offspring seeds, in the offspring seed feed conversion stage, the tubificidae is firstly fed to open mouths, then the pork liver is fed for offspring seed breeding, then the pork liver and silurus meridionalis offspring seed powder in different proportions are used for preparing feed conversion feed for feeding, and the offspring seeds smoothly eat artificial compound feed through 25-36-day step-by-step feed conversion, so that the yield of the offspring seeds is improved. The specification of the larvae grows from the initial 0.5-1.7 g / larvae to 7-12 g / larvae, the larvae are fed, and the larvae feeding conversion survival rate can reach 89.5% or above. Meanwhile, screening and fish separation are conducted once every 6-9 days in the food conversion breeding process, the fries are separated into different specifications to be bred, and the situation that the fries kill one another due to large specification difference is effectively prevented.

The invention relates to a food detection device and a detection method, and belongs to the technical field of food detection, the food detection device comprises a detection box body, the detection box body comprises a sliding table, the inner wall of the detection box body is slidably connected with the sliding table, a culture dish is placed at the top of the sliding table, and the top of the detection box body is fixedly connected with a first medicament box. When different foods are placed in the detection device for detection, in order to improve the conversion detection of different medicaments on different foods and synchronously protect and store one group of nozzles when the nozzles are not used, after a culture dish is placed on a sliding table, a first servo motor is turned on to drive a worm gear to rotate through the rotation of a worm, so that the detection efficiency is improved; the rotation of the worm gear drives the adjusting plate to synchronously slide along the limiting groove and the outer wall of the adjusting box through the rotation of the oscillating rod, so that one set of adjusting box is in an open state, the other set of adjusting box is in a closed state, and medicine in the medicine box in the open state flows out through the nozzle, and the requirement for conversion detection of different foods is met.

The invention discloses a factory breeding and facility cultivation method for largemouth bass, and relates to the technical field of largemouth bass cultivation. The specific breeding method comprises the steps of parent fish breeding, fry hatching, fry breeding and adult fish breeding, in the fry breeding step, newly hatched larval bass water spots are bred under the dark condition, pretreated fairy shrimps are adopted as initial feed during breeding, then pretreated fairy shrimp larvae and rotifers are fed, and the young larval bass are bred. The ratio of the rotifers is gradually increased every day until all the rotifers are fed, food conversion domestication is started, 90% of the rotifers and 10% of the fermented artificial compound feed are mixed and fed on the first day after domestication, the proportion of the rotifers is gradually reduced every day, and the proportion of the feed is gradually increased every day until the fries completely adapt to the feed. By means of the fry breeding method, healthy fry which grow neatly and are uniform in size and high in stress resistance can be obtained, and the survival rate and the growth speed of adult fish breeding are increased.

The invention relates to the technical field of fish food conversion domestication, and discloses an outdoor perch net cage food conversion domestication device and method.The outdoor perch net cage food conversion domestication device comprises an aisle plate, net cages and bearing platforms are fixedly connected to the two sides of the aisle plate, the bearing platforms are located at the tops of the net cages, and bottom plates are fixedly connected to the two sides of the top of the aisle plate; water spraying assemblies and lock catches are arranged on the two sides of the aisle plate, one end of each lock catch is fixedly connected to the outer wall of the aisle plate, the outer wall of each lock catch is sleeved with a pull rope, and each water spraying assembly comprises a first water spraying head and a water pump. The feed is pushed to move by utilizing impact force of water flow, the effect of simulating the dynamic state of live baits is achieved, the domestication problem that carnivorous fishes such as perches only eat live baits and do not eat static artificial feed is solved, the domestication effect is remarkably enhanced, the feeding habit conversion process of the carnivorous fishes is accelerated, in addition, timed and quantitative feeding can be achieved, labor is saved, and the domestication efficiency is improved. The food conversion domestication effect is also obviously enhanced, and the fish food habit conversion process is accelerated.

This invention relates to a method for reducing total Ca and / or available P in poultry feed, a method for growing poultry, a method for selecting a desired food conversion rate for poultry, a method for producing poultry feed, use of hydroxylated vitamin D for obtaining in poultry essentially the same feed conversion rate, and poultry feed.