My county has a total of 85,000 mu of green crab breeding area, and has always been based on the stereo mix of crab, shrimp and shellfish. The polyculture model over the years has caused limitations in the use of drugs in the chicken ponds and the incomplete disinfection of clear ponds. For this reason, aquaculture diseases frequently occur. The area, yield, and benefit of green crabs in the county are declining year by year.
It is understood that the new farming model uses polyculture of blue crabs and white tailed prawn. The seeds are produced from the pure seedlings of the Sanmen blue crabs produced at the national level, using new methods of grading cultivation, aeration at the bottom, and oxygenation at the surface. The combined new equipment, microbial preparations, and immunoenhancing agents are new technologies for controlling diseases, and the effects of low-value shellfish and compound feeds on the flavor of blue crab have been studied. The influence of natural and artificial concealments on their survival rate The study explored the establishment of a new model of three blue crab breeding.
From March onwards, technical staff of the county's technology promotion station began to conduct experiments on the ecological intensive culture of green crabs. The ponds were remodeled and refitted with high standards, and membranes were treated around the ponds to install microporous aeration tubes at the bottom. facility. At the beginning of May, bleach ponds were used to disinfect the test ponds in the clear ponds and water bodies, and microbial water-fertilizer fertilizers were used. Finally, the water quality was stabilized by photosynthetic bacteria. On May 17th, the first batch of blue crabs were placed in the test pond.
According to the relevant staff, the successful trial of the new model of ecological intensive culture will greatly increase the yield per mu. The objective of this experiment is that the average yield of green crab is 100 kg per mu, the yield per mu of ridge tail white shrimp is 50 kg, the per mu output value is 13,000 yuan, and the mu efficiency is 6500 yuan, among which the efficiency of green crab breeding is 4,500 yuan, and the efficiency of ridge tail white mu shrimp is up to 2000 dollars.
Hormone:
A chemical substance produced in the body that controls and regulates the activity of certain cells or organs. Many hormones are secreted by special glands, such as thyroid hormone produced by the thyroid gland. Hormones are essential for every activity of life, including the processes of digestion, metabolism, growth, reproduction, and mood control. Many hormones, such as neurotransmitters, are active in more than one physical process.
Endocrine:
Pertaining to hormones and the glands that make and secrete them into the bloodstream through which they travel to affect distant organs. The endocrine sites include the hypothalamus, pituitary gland, pineal gland, thyroid, parathyroids, heart (which makes atrial-natriuretic peptide), the stomach and intestines, islets of Langerhans in the pancreas, the adrenal glands, the kidney (which makes renin, erythropoietin, and calcitriol), fat cells (which make leptin). the testes, the ovarian follicle (estrogens) and the corpus luteum in the ovary). Endocrine is as opposed to exocrine. (The exocrine glands include the salivary glands, sweat glands and glands within the gastrointestinal tract.)
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