Problems and Solutions in Crayfish Culture

First, the broodstock disinfection method is not properly implemented. The conventional approach involves soaking lobsters in a 3% saline solution, which is suitable for broodstock transported with water. However, when transporting broodstock by water, using saltwater can worsen dehydration, negatively affecting survival rates. It is recommended to use potassium permanganate instead of saltwater for disinfection, as it is more effective and less harmful. Second, the timing for restocking broodstock is often inappropriate. Most crayfish seedlings come from either breeding or purchasing. Some farmers tend to make mistakes when planning their stocking and breeding schedules, such as introducing wild broodstock for breeding too early in the year. The ideal water temperature for mating and spawning is between 12-33Â°C. Although temperatures during March to May meet this requirement, the gonads are not yet mature, so no eggs are laid. Shrimp eggs require 4-6 months to develop into the IV stage, meaning that broodstock stocked in the first half of the year will only breed in the second half. Under natural conditions, crayfish typically spawn and hatch between September and November. Shrimp eggs hatch within 9-15 days after being laid. Over 80% of shrimps in East China hatch between October and December. Therefore, if broodstock is introduced between August and October, natural breeding can produce shrimp for cultivation. Studies show that some female ovaries reach stage II-III by March. By feeding high-quality feed and raising water temperatures, the development of the gonads can be accelerated, leading to earlier spawning. Combining greenhouse overwintering technology with pond and rice paddy aquaculture can create a more efficient breeding model, improving production and efficiency. Third, excessive fertilization leads to the death of aquatic plants. Some farmers underestimate the role of aquatic plants, thinking they are less important than plankton. When plankton levels drop, they often add fertilizer, reducing water transparency. Once transparency falls below 30 cm, plants struggle to photosynthesize and die. This not only reduces food sources for shrimp but also weakens the waterâ€™s self-purification ability, worsening the environment and lowering feed utilization. This practice harms ecological balance and ultimately affects production. Therefore, attention must be given to cultivating and utilizing aquatic plants effectively. Fourth, there is a lack of understanding about the mutual benefits of fish and shrimp polyculture. This system is highly beneficial because fish and shrimp can coexist. Fish leftovers and excrement can be used by crayfish, reducing waste and pollution while lowering costs. Using crayfish feeding habits for polyculture promotes symbiosis and improves aquaculture efficiency. Fifth, insufficient knowledge of crayfish cannibalism is a major issue. Cannibalism is one of the key factors affecting aquaculture success. Broodstock have low larval survival rates due to their feeding habits, and larger shrimp tend to kill smaller ones. Juvenile shrimp are more likely to be eaten than adults, with up to 60% mortality in some cases. To reduce this, artificial shelters like water grass, tiles, pipes, and bamboo tubes should be provided. These help reduce aggression and improve survival rates. Sixth, blind fertilization causes poor water quality. Many farmers use organic and compound fertilizers to grow plankton, but this often leads to oxygen depletion and plant death. A better method is to bury organic fertilizer in the bottom sludge and compost it along the pond edges. This encourages benthic organisms that serve as food for shrimp. Water should be moderately rich, with a transparency of 30-40 cm. During heavy growth, transparency can increase to over 60 cm. In summer, proper fertilization helps prevent hypoxia and maintains a healthy environment. Current practices need to be revised for better results. Lastly, many farmers neglect timely water changes. Some believe crayfish can survive in polluted water, but in reality, poor water quality is a major cause of mass deaths. Regular water changes improve quality and stimulate growth. However, changing water too frequently increases costs. A balanced approach is to change water once or twice a week in hot seasons, replacing about a quarter each time. If water quality is poor, bioorganic fertilizers can be used instead of regular ones.

Sarms Liquid

What is S-23?

S-23 demonstrates a markedly strong bond to androgen receptors

S-23 is an modern selective androgen receptor modulator (SARM) with the added interest in its potential for male hormonal contraceptive. It binds to the androgen receptor more strongly than older compounds such as Andarine with a Ki of 1.7nM, and in animal studies it showed both a good ratio of anabolic to androgenic effects, and dose-dependent suppression of spermatogenesis with spontaneous recovery after cessation of research.

Added value for research with pronounced suppression of spermatogenesis. Not for human consumption.

S-23 Function

S-23 not only boosted muscle mass, but also reduced fat mass, as studied. SARMs have a bit of a 'soft' image in the doping world. They don't stimulate muscle growth in the way that anabolic Steroids do, but many users say that they are safer.

There are no studies yet that confirm this suspicion. But that S23 is not one of the safer SARMs - we'd be willing to wager a bottle of BCAAs on that.

S23 halts the production of sperm in the testes. In fact it does this so well that the researchers suspect S23 might be a good candidate for a male contraceptive. If this is the case it would probably have to be part of a cocktail that also contains an estradiol analogue, the researchers discovered. The lab animals lost their libido when they were given S23 on its own, and only recovered this when they were given estradiol benzoate together with the S23.

Our company offers variety of products which can meet your multifarious demands.including API Powder.Pharmaceutical Intermediates.Vitamins Powder.Plant Extracts.Food Additive.Peptide Powder and so on We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.

product Photo:

Sarms Liquid,Sarm Pills,Sr9009 Raw Material Powder,Bodybuilding Powder

Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptidenootropic.com