Causes of death from autumn crabs and rescue measures:
1, due to improper feeding caused by death: After the fall of the day and night temperature difference, pressure, water temperature changes will increase, the crab's appetite will also change, overfeeding plant feed easily lead to indigestion and death, there is the so-called "Expanded" phenomenon. At this time should increase the feeding of small fish, snails and other protein content of high digestible bait, supplemented with a small amount of plant feed, both beneficial to the digestion and absorption of crabs, but also beneficial to increase the fat and strong crab; at the same time pay attention not to feed dirty bait, so as not to cause crab Gastrointestinal disease.
2, timely fishing, prevention and reduction of natural death: crabs in the growth and development process with the oyster shell after another, the volume becomes larger, weight gain, into the fall of September-November in particular before and after the "frost" (October-November) There will be a group of two-year-old crab gonadal gonadal development and maturity, from the "yellow crab" oyster shell into "green crab", gonads mature crabs due to higher osmotic pressure in the body, stimulate crabs into rivers to migrate to the shallow sea to reproduce offspring. This is the old saying, “West Wind, Crab Feet Itchingâ€. If it is not caught on the market in time, it will continue to stay in the freshwater environment and it will easily lead to the escape of the crab and its inability to adapt to the low osmotic pressure of fresh water. At present, some farmers are pursuing one-sided profits, and they are often matured up to market specifications. They are sold when the market volume is low, and more attention should be paid to the timely sorting and arrest of sexually mature “green crabsâ€. Avoid unnecessary economic losses due to natural death.
3, large temperature difference between day and night caused the crab "cold" and cause death: due to the large temperature difference between day and night after the fall, the temperature difference between the water body is also large, especially the autumn rain weather is more, the temperature difference between the water body after rain may even reach 9-10 °C Some crabs with poor constitution are often difficult to adapt to such a large temperature difference, and they are very susceptible to "cold", which leads to loss of appetite and difficulty in breathing. This phenomenon should be paid attention to timely regulation of water level in daily production, control of drastic changes in water temperature, appropriate deepening of the water level when the weather changes, in addition, the water surface to keep some floating plants, such as water hyacinth, water peanuts, etc., can also play a role in temperature control To a certain help function.
"Steroids are a general term for a large group of derivatives widely distributed in the biological world, which can also be called steroidal or steroidal compounds. Steroid hormones are mainly synthesized and secreted by various parts of the body, and a small part can be synthesized artificially. They play an important auxiliary role in the functional activities of organs, tissues and cells of the body. Steroid hormones mainly include adrenal cortical hormones secreted by the adrenal cortex and gonadal secretion of sex hormones, when taking a large number of steroid hormones, will produce swollen face, nausea and other side effects
Steroid Powder, Steroid Powder, Testosterone Propionic Acid, Testosterone Enic Acid, Testosterone Acetate Steroid Powder, Testosterone Propionic Acid, Testosterone Enic Acid, Testosterone Acetate
steroids powder,corticosteroids,estrogen and progesterone
Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptide-nootropics.com