Jiangxi Institue of Biological Products Inc. is a holding conglomerate focusing on focusing on bulding a sustainable business model that combines agriculture, animal husbandry, medicine and health. It has bulit the first sustainable chain in China in which its agricultrue and animal farming support each other to maximize resource utiliztion, and both provide raw materials and impetus for development in the company's medine, health and beauty products lines.
Equine By Products,Horse Feeds,Equine Health Products,Advanced Equine By Products Jiangxi Institute of Biological Products Inc. , https://www.jxinstitute.com
1. Intimate choice (1) Intimacy requires the shell color to be bright, blue-blue, shell complete without incomplete, "abdomen" drum round, strong body plump, strong shell closure, age 6 to 8 years of age Well, it is best for females to be females.
(2) The sex of the eukaryotes is difficult to distinguish from the appearance, and it must be judged based on the density and number of the internal cocoon filaments. The females are generally slightly larger, the growth rings are wider, and the shells are slightly wider and thicker. When the river eel is opened, the female cocoon filaments are closely arranged. After sexual maturity, the number of cocoon filaments of the external condylar valve reaches 100 to 120; the male cocoon wire is sparsely arranged. After sexual maturity, the number of sputum filaments of the external condylar valve is only 60~ 80 roots.
2. Intimate culture and breeding ponds should be better than 2,000 square meters, with a water depth of 1.5 meters, and the bottom sludge thickness is moderate. The oxygen content in the aquaculture water layer was 4.0-8.0 mg/L, the pH was 6.5-8.0, and the dietary biomass was 10-20 mg/L. The water quality should not be too fat, so that female germ cells do not develop due to hypoxia or reversal. If you use a small area of ​​water to cultivate your relatives, you must have slow flow conditions.
The ratio of male to female is generally 2:1 (that is, 2 males and 1 females are 1 combination), and the tails are suspended in the water layer for sex ratio breeding.
Intimate cultivation work should be started from the autumn, and it is necessary to regularly note and drain water, timely breeding of food organisms, and promote the development and maturation of the pro-gland gonads.
(B) Fertilization and embryonic development
1. Fertilization (1) In the fertilization season, spinnaker otters are used as an example. In general, the spinnaker has reproductive ability at the third instar. Sexual maturation begins in May each year. When sexually mature, the gonads of the female spiny otters appear orange-yellow, and the gonads of the male spiny bream appear white. The spawning season is from May to July. Mature eggs are spherical; mature sperm microscopy can swing around. When most of the eggs in the gonads mature, the female pods ovulate and fertilize. Spindle plover spawns 5 to 8 times a year, spawning 400,000 to 500,000 eggs.
(2) Fertilization method The method of fertilization by the river turtle is natural fertilization and induced fertilization.
1 Natural fertilization: In the breeding season of earthworms, mature eggs of female eel are discharged into the body coat cavity through the reproductive hole; mature sperm are discharged from the vas deferens through the genital hole to the supraorbital cavity and then discharged into the external body of water through the outlet pipe. . The spermatozoa enter into the coat cavity of females with water and combine with the eggs to be pregnant to complete the fertilization. The fertilized eggs develop embryonic development on the left and right sides of the female pupa.
2 Induced insemination: The male reproductive cells usually mature earlier than females. When the female part of the eggs matures, the male tadpole semen is manually taken out, diluted with reproductive saline, injected into the epidermis of the female tadpole, and placed in a fertilization basin having a water temperature 3 to 5° C. higher than that of the original pool. Induced insemination. The first injection of semen only evoked the role of ovulation in females, and it was necessary to inject the second dilution of semen in the same way. This time, the semen in the semen was just fertilized with the mature eggs that were elicited. By inducing fertilization, the river can advance into the breeding season.
2. Embryonic development Fertilized eggs develop from embryonic development through fertilized eggs → mulberry stage → blastocyst stage → gastrula stage → hook-mediated embryonic development and form H. avium. The entire embryonic development process generally takes 35 to 50 days.
(3) After picking and immersing the seedlings, the hooks are mature on the external iliac crest of the female pupa and have full-filament and hooks. They can be parasited on the fish body and must also be parasitized on the fish body to complete the metamorphosis process and become cubs. . Therefore, when the hook mediator is about to be released, it is necessary to use the fish as a "precipitator" and collect the hook mediator on the fish.
1. The choice of picking fish can be used for picking fish, oysters, grass carp, and quail. However, it is better to use squid and grass carp species with gentle temperament. Each oyster harvested 300 to 500 9.9 cm fish species each time. To select good fish species with good health, we can tolerate more parasitoids.
2. Identification of the maturation of mating decoys The immature hook-medium does not have the ability to parasitize, and the maturation of hook-mice must be identified. Identification method is to take out a few breeding females, first open the river raft with an opener, stoppered and fixed to a certain extent, and then use the probe to pick out a little hooked larvae in the middle of the river raft, if the selected hooked larvae Can be linked to each other into a chain, it is a mature hook mediation.
3. Collecting Seedlings (1) Indoor seedlings Inject 10 to 15 cm deep clean fresh water into the pots. Place the tested mother quail flats on the pelvic floor, and then put the seedlings into the pots, and open the pipes to make the water become water. Flowing water can stimulate the mother's throat to expel it after a few hours.
(2) Outdoor seedlings In the fresh water quality of rivers and lakes, fish boxes can be used to collect seedlings. The number of seedlings is large and it is suitable for mass production. Picking seedlings should be promptly replaced with picking seedlings, and it is appropriate to use about 200 tail hooks to mediate each fish tail. If the number exceeds the limit, fishermen will die. One day before the seedlings are picked, they should be trained to pull nets, enhance their constitution, and excrete their excrement to avoid contamination by seedlings.
(a) Intimate choice and cultivation