First, the choice of urchin production One is to select from the pro-mula fish ponds cultivated in a special pool; the other is to select age-two sexually mature mullet fish from the mullet culture pond, but it is more troublesome. The sexually mature female black mullet has an enlarged and soft abdomen. Its outline of the ovary is clear, and the reproductive hole is reddish and prominent. The male mullet is beautifully purple on both sides of the body. There are white small round spots arranged from the dorsal fins from top to bottom. The more round spots, the better the sexual maturity and the reddish reproductive pores. Second, oxytocin From April to July each year, when the water temperature stabilizes above 20°C, oxytocin can be started. The oxytocin-releasing hormone analogues (hereinafter referred to as LRH) and human chorionic gonadotropin (hereinafter referred to as HCG) are mainly used as oxytocin. Dosage: female mullet use LRH-A3 per kilogram, 3-6 micrograms or HCG 800-1200 International Units (single use); female mullet is 2/3 of female mullet. In the pre-oxygenation period (April-May), the use of two hormones is better than a single use, and the amount used depends on the sexual maturity of the black mullet. Generally, LRH-A34-6 μg/kg HCG600-800 is used per kilogram of female black mullet. unit. In the middle and later stages of oxytocin, the water temperature gradually rises, and the dosage decreases accordingly. The dosage is determined according to the time of the oxytocin production and the total weight of the urchin, and then it is formulated with physiological saline or water for injection. The amount of each mullet injection depends on the size of the fish, generally 1-3 ml per fish. Hormones are now available. When the drug is injected, the selected mullet is placed in a plastic basin. The left hand covers the head of the mullet with a felt, and the right hand holds the needle. The needle rapidly forms a 45-60 degree angle with the fish in the direction of the head, and the base of the pectoral fin is concave. At the needle, advance the injection. Needle depth of 0.8-1.5 cm. In the early stage of oxytocin, two injections are generally used. When the female mullet is injected for the first time, 1/3 of the dose is administered, and the remaining dose is injected after 12-16 hours. The male mullet can be injected once and during the second injection of the female mullet, and the mullet can be matured well in the late puerperium and can be injected once. Third, spawning Since mullets compete for spouses before spawning, which affects spawning and ejaculation, the adoption of a small grid cage as a spawning pool results in a much higher fertilization rate than a large pool of black mullet. The small grid cage is made of polyethylene mesh. Specification square, an area of ​​1 square meters, a net height of 1-1.5 meters, there is a cover, this is because the mullet jumping ability, can leap more than 1.5 meters above the water. Set the prepared small cage in the pond with a depth of 0.5-1 meters from the water surface. Put the mullet after the second injection into the cage. Place one male and one female mullet in each cage. Then put a certain amount of plants to prepare the mullet for nesting and spawning. The spawning time is related to the water temperature. The water temperature is 20-22°C, which will take about 30 hours, and it will begin spawning and spawning. If the water temperature can be kept at 23-25°C, it will take about 17-20 hours. The eggs are concentrated and float in the nest, and spawning takes 12 to 15 hours to finish. During the spawning period, it should be kept quiet. Once disturbed by the outside world, spawning will be stopped immediately. The spawning time of mullet is the quietest time in the middle of the night. IV. Incubation After the spawning of the mullet, the small-scale production may not catch the mullet, let the fertilized eggs hatch in the cage, or catch the mullet, remove the eggs and place them in a plastic basin to be incubated in the indoor calm water, and put the fertilized eggs in each liter of water. 500-1000 tablets range; scale production of the fertilized eggs can be placed in the hatching tank (cylinder) or incubation loop microfluidic water incubation, each cubic meter of water placed 60-100 million fertilized eggs ranging. After fertilization, the eggs are golden brown, gradually turning dark gray as the embryo develops, and the unfertilized eggs gradually turn yellow and eventually appear white. The length of incubation depends on the temperature of the water. When the water temperature is 22°C, it takes about 60 hours to hatch the fry. It takes about 36 hours at 25-26°C and about 30 hours at 30°C. After the fish fry come out of the membrane, they rely on the absorption of their own yolk sac to grow and develop. As the yolk sac gradually absorbs and disappears, the fry begin to swim flat and open to feed. This development process is related to the water temperature and takes about 3-5 days until the fry swim and feed. It can be put into a fry pool cultivation. During the incubation period, we mainly do the following several management tasks. (1) Still water hatching. Indoor plastic basins and other hydrostatic incubation, change the water once in the morning and evening, change the amount of water at least 1/2, careful operation when changing the water, so as not to damage the eggs. (2) Keep the water temperature as stable as possible. The water temperature change of the water change does not exceed 2°C, otherwise it will affect the hatching rate. (3) Ring or barrel (cylinder) hatching. Wash the water filter sand window frequently, so as not to plug the mesh and escape the eggs. The cages were hatched, and the cages were washed once every 1-2 days to keep the exchange of water inside and outside the tank. (4) Remove unfertilized or moldy eggs at any time.
Electric Hydraulic Operating Table
1. Import hydraulic system
2. Memory sponge mattress
3. Electric Longitudinal displacement ≥350mm
4. Tabletop is X-ray available
5. Optional Carbon fiber bed panel
The Hydraulic system adopts imported integrated type components, imported motor and solenoid valve, stable performance.
The Operating Table uses wired mini touch controller.
Pillar base cover all 304 stainless steel, anticorrosion, easy to clean and durable.
Taiwan stainless steel structure, easy to use, safe and stable.
Accessories are removable.
The Multi function medical operating table is suitable for comprehensive surgical operations like thoracic surgery, abdominal surgery, brain
surgery, eye surgery, ENT, gynaecology and obstetrics, urology surgery, orthopedics surgery and other general purpose.
More Images:
The brief medical operating table without accessories installed on
The whole set Surgical Operation Table with all related Accessories intalled on
Certificates:
Certificates of CE, ISO9001, ISO13485 and CFDA are approved
Company:
Shangdong province is the main machinery production base in China.
KANGERJIAN Medical Technology Co., Ltd. is a group of senior lighting design expert and machinery manufacturing expert company with 20years experience and factory locating in the east city--the hometown of confucius--Qufu in Shandong province, China.
The Company has passed the ISO:9001:2008 quality system certification, ISO13485:2003 quality system certification, CE certification and CFDA certification, so that the enterprise management standards and product quality is relatively connected to expand the international market for enterprises to lay the foundation.
Our main products: Operation Theatre Lights , Operating Room Lights , Double Dome Halogen Operating Light, Single Dome Halogen Operating Light, LED Operating Light , Surgical Operating LED Light , Mobile Type Operating Light , Gynecology Examination Tables , Obstetric Delivery Bed , Electrical Gynecological Table , Obstetric Delivery Table , Delivery Examination Table , Electric Hydraulic Operating Table, Electric Medical Operating Table, Manual Electric Operating Table , Surgical Table , Operating Table, Operating Theatre Pendants , icu tower crane in ICU room, LED Viewbox etc. professional medical equipment.
The quality of casting by me, the market led by me! Excellent from professional, KANGERJIAN people lead the new trend of medical equipment.
Electric Hydraulic Operating Table Electric Hydraulic Operating Table,Electric Hydraulic Operating Bed,Hospital Electric Hydraulic Medical Table,Hydraulic Pressure Operation Bed Shandong qufu healthyou Medical Technology co.,Ltd , https://www.kangerjian-medical.com
