The Amur sturgeon, also known as the Heilongjiang apes and seven floaters, is a large-scale economic fish in the Heilongjiang River Basin. Ashes are divided into brown and gray two types. The brown species grows slower than the gray species and mainly grows in the middle and lower reaches of Heilongjiang. The resources and production are low. The gray species inhabits brackish waters in the mouth of the estuary, feeding on benthic organisms. The mature individuals in the population are mostly 10-14 years old, 105-125 cm long and 6-18.5 kg tail. The spawning group began spawning migration in the fall, and some individuals who had not reached sexual maturity also migrated from the estuary to the Heilongjiang River, and waited for mature spawning before descending from the river to the estuary area. 1. Breeding Techniques Broodstock Selection: Artificially breeding broodstock is generally harvested from Heilongjiang waters by naturally mature individuals. Females weighing 15 kg or more, males weighing 20 kg or more, and ages 9-13 years were selected. Females in the reproductive period are thinner, more pointed, more mucus on the body surface, thinner and softer abdominal wall, and enlarged and elastic abdomen. There was no significant change in body color and body shape of males, and individuals with body weights of more than 20 kg were mostly mature. Artificial oxytocin: When the water temperature is 16-24°C, artificial oxytocin production can be performed. Lots of oxytocins use LRH-A. The basic dose is 60-90 micrograms per kilogram of females, divided into two injections, and the first dose is 10%. Males are halved in dose, and males with better maturity may not be injected. The injection site is generally the base of the pectoral fin. Then the female and male broodstock are kept in ponds and stimulated by running water. Females swim actively when they start ovulation, frequently hit the surface of the water, and gently press the abdomen to the oocysts where there are eggs flowing out. Oviposition and insemination: The semen of the male fish was collected by extrusion and the high quality semen was pure milk. Ovum was collected by laparotomy or manual push and artificial insemination was performed by semi-dry method. The amount of semen used was 10 ml per kilogram of fish eggs. Diluted the semen with sterile water first, and then quickly poured the semen into the fish eggs, stirring evenly to fully combine the sperm and eggs. The eggs of Amur sturgeon are sticky and must be detacked before hatching. Detackifiers mostly use talcum powder or yellow mud to make 20% and 10% suspensions. When they are debonded, the suspension is poured onto the fish eggs and continuously stirred. When the eggs are all dispersed particles, the water can be flowed. incubation. Egg hatching: The incubation temperature is 16-24°C and the optimum temperature is 19-22°C. The egg size of Amur is larger, about 40,000 grains per kilogram. It is best to hatch in microfluidic conditions. At an average water temperature of 17[deg.] C., the film was formed about 105 hours, and when the average water temperature was 21.5[deg.] C., the film was released about 8 hours. The newly hatched seedlings are 1.1-1.3 cm long and can move vertically if they are cricketlike. 2. Seed cultivation ponds can use outdoor ordinary cement pools, with an area of ​​about 300 square meters and a water depth of 1.5-2 meters. The specifications for stocking in the same pool should be neat. Fish were soaked in 5% saline before entering the pond and feed was started the next day. In the early stages of feeding, leeches can be used and gradually domesticated into artificial compound feeds. Artificial feed containing crude protein should be about 38%. Feeding 3 times a day, feeding 2% of fish weight. During the rearing period, the water level should be above 1.5 meters, water temperature below 26°C, dissolved oxygen 6 mg/L. 3, adult fish cultured oysters, like other squid, can be kept in small water bodies, can also be stocked in large bodies of water, but also can be cultured in cages. In small ponds such as cement ponds and earth ponds, high-density intensive culture methods are generally used to feed large-sized fingerlings. After about one year of feeding, the specifications can reach about 2 kg. The stocking in lakes and reservoirs is mostly mixed and extensive.
Medical Consumables
Medical consumables and equipment's are the most used regularly at the hospitals/laboratories.
including Medical Vacuum Safety Needle,Glucose Tube,Grey Glucose Tube,Blood Taking Collection Safety Needle etc.
As the top rank manufacturer of non-vacuum blood collection tubes on both quality
and quantity in China, Xinle has more than enough capacity in design, develop and
manufacture tubes according to customer specific requirement at a cost that's
rarely available anywhere else.
The disposable peripheral safety blood lancet is composed of out shell, trigger, plastic handle, spring, back cover and
protective cap. The needle body is made of Ocr18Ni9 stainless steel wire, and the spring is made of carbon spring steel
wire or stainless steel wire. The back cover is made of PE plastic, the shell is made of ABS or PP plastic, and the other
injection parts are made of ABS plastic.
01 - Purchase of raw materials
The company's purchase of raw materials shall be caried out in accordance with the company's "raw material purchase
requirements document", and the purchased raw materials shall be strictly inspected.
02 - Product inspection
In the process of production, the product shall be subject to one hour sampling inspection, and the finished product shall be
subject to sampling inspection and sample retention by batch, so that the batch can be traced.
03 - Product sterilization
This product is sterilized by iradiation of cobalt 60 or epoxy 2-alkane, so as to achieve complete sterilization without residue,
longer warranty period and more safety.
04 - Product salient features
Beautiful appearance, comfortable grip, one-piece injection molding of needle body, exposed air of needle plutonium, avoid-
ing pollution of rabbit needle body, three section design of needle iron, small force, spring
With the new design, the puncture time is only 0.3 seconds, and the patient's pain is lower. The blood collection needle
adopts self destruct device, after blood collection, the needle body quickly retracts and locks up, the iron is not exposed,
which effectively protects Protect the safety of medical staff.
Medical Consumables,Medical Vacuum Safety Needle,Glucose Tube,Grey Glucose Tube,Blood Taking Collection Safety Needle
Changchun ZYF science and technology CO.,LTD , https://www.zyf-medical.com