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Fertility beads were transplanted at late autumn
In late autumn, the water temperature is generally between 18 and 26°C, which is the best time for the implementation of the implantation of YUSP. In this stage of surgery, the tendon wounds are easily healed, which is beneficial to the formation of pearl sac and the secretion of nacre. The small pieces of cells are proliferated quickly and are easy to rejuvenate with excellent results. The key techniques in the operation of freshwater non-nucleated pearl surgery are summed up as follows: The preoperative preparation is firstly to select the surgical iliac crest. Pearl seedlings require complete shells, rapid shell closing, strong water spray, sparse growth lines, robust physique, no injury, disease-free, age 1 and shell length 7-10 cm; small pieces of carcass integrity, adductor muscle Powerful, strong water spray, scared, that is closed shells, age less than 1 instar or 1 instar, shell length 6 to 9 cm, and the same species as the cultured pearls. Cultivate freshwater non-nuclear pearls. Generally, the ratio of cultured pearls to small flakes is 3:1-2. Followed by preoperative care, surgery should be 7 to 10 days before the operation should be placed in cage-free mud cage raised, so that the body as soon as possible mud removal, aponeurosis thickening, to enhance the tension, easy to make plug. 1 night before surgery, put the selected quail back into a clean pool or a plastic basin. Use water or water change to expel the food and dirt from the body to facilitate clean and hygienic production. The wound is not infected. In addition, a surgical operation room was established and various surgical instruments and disinfecting and maintenance fluids were prepared. During the operation, the operation is divided into pieces and implants. Care must be taken during the operation. The procedure for making small pieces is as follows: 1 Cut off the front and rear shell muscles and open the double shell; 2 Cut out the color line of the mantle with scissors; 3 Cut out the mantle along the coat; 4 Place the cut mantle on the slide. The inner surface of the epidermis is down, the outer surface of the skin (the side with the shell) is facing upwards; 3 the internal and external skin are separated with tweezers, and the inner surface of the epidermis is torn off; 6 the surface of the epidermis is wiped with cotton wool; 7 the trimming of both sides of the mantle is performed and the width is narrow 8 Sliced ​​with a slicing knife; add 9 drops of disinfectant or maintenance fluid; 10 to deliver the implanter. Production should grasp the "five things": cut off before and after the closure of the muscle or not to cover the shell, the mantle should be intact attached to the shell, so as not to affect the production; mantle edge line to be cut clean, so as not to produce bone Beads; tear film to start from the back end of the mantle, try to use a small piece of water near the hole, this piece of small pieces of pearl quality is good; slice to be decisive, crisp, smooth cut, small pieces of the size of the film as well, generally 3.5 mm wide, It is 4 mm long and has a square shape after shrinking; it should be promptly added with a disinfectant and maintenance liquid after slicing to prevent the cells from dying and dying. The production process is completed within 2 to 3 minutes, and the system is made to be planted, not allowed to expose to direct sunlight or for a long time. Put it on and make it white. The procedure for grafting is as follows: 1Open the shell opening, add the mouthpiece, and insert the plug; 2Erase the dirt in the jacket cavity, press the axe foot down; 3Use the delivery needle to hold the small piece and pick it with the aid of the open needle. A small piece; 4 from the edge of the left edge of the membrane with a open needle hook; 5 will be sent into the small film between the outer and outer membrane; 6 with open needle pressure to the wound, pull out the film to send needle; 7 with open needle pull, pressure, squeeze, push the whole Circle; 8 from top to bottom, from left to right, repeat 3 to 7 steps to completion; 9 pull out the plug, remove the shell device, will be placed in the disinfectant solution soaked; 10 hanging. The implant must be “Five Fitâ€: moderate opening, wide opening will damage the adductor muscle, affect the survival rate of the eel, and generally the opening width is controlled at about 10% of the length of the carcass; A small piece is inserted into the posterior part of the membrane. This part is not oppressed by the axilla foot and the visceral mass. The quality of the produced pearl is the best. It should be transplanted in the same position as possible. That is, each piece of small piece is implanted into the receptor in the corresponding position to reduce the number of rows. Different reactions, accelerate wound healing; moderate depth, insert depth of about 5 mm, can not be hooked through the mantle, otherwise there will be shell beads, small pieces can not be inserted too shallow, too shallow pieces exposed tail easily infected, become a focus Beads or produce vomit tablets, small pieces should be strictly rounded after insertion to increase the ball rate; arrangement is appropriate, small pieces should be arranged in a plum-shaped layout, usually each cutting 30 to 36, generally 3 rows per side of the graft, The column spacing is moderate, to prevent the formation of pearls in the process of extrusion and adhesion to produce malformed beads; tablets must be suitable to strictly grasp the quality of small pieces, triangular pieces, diamond pieces, dry pieces, white pieces, dead pieces, etc. not inserted, and Each surgery should be 3 to 5 minutes Completed within. After the operation, the cultured eucommia erythematosus is weak and the wounds are easy to infect and become inflamed. Therefore, they need to be kept in the waters with good water quality and good environmental conditions as soon as possible. They should not turn at random within 1 month, and they must not leave the water or open the shell to avoid affection. Its wound healing, physical recovery and pearl formation. During the holding period, we insist on daily inspections to eliminate the disease and die. After the full moon, it is divided into cages and raised to the appropriate Yuzhu waters. Most of the cages are raised in cages, and they will be placed in cages about 40 cm below the surface of the water. Hanging tools include bamboo cage, same card, plastic bowl, etc. When hanging, each cage is tied with a plastic rope, suspended on a foam pontoon, and fixed in a pond or lake or a bay with a long rope, with a spacing of 1 meter. , spacing of 2 meters. The number of cages depends on the size of the carcass and the size of the water, which is usually 5 to 8 per cage. The stocking density per acre for breeding pearls is: In the first year of breeding, about 2,000 were raised and reared, and the length of rearing pearls was reduced to 12 or so to about 1,000. During the feeding period, it is necessary to rationally fertilize the pipe water, fertilize organic fertilizers as the main component, and supplement chemical fertilizers with small amounts, maintaining the water quality for fat, live, tender and cool, the water color is yellow-green, and the transparency is 30 to 35 centimeters. Adjust the depth of rigging according to seasonal changes, shallow cranes in spring and autumn (about 30 cm), and deep cranes in summer and winter (about 50 cm). After a certain period of operation, in the hanging place of the Yuzhuyu, 1 lime should be applied every 10 days. Each time, the amount of lime used is 15 kg of quicklime to prevent the disease and increase the calcium content of the earthworms and beads. In the later period, it is necessary to do a good job of insulation and antifreeze work to ensure that the eukaryotes are safely overwintering. (Senior engineer of Minjiang Aquatic Products Bureau)