How to increase the amount of shrimp fed? It's a thing that "turns decay into magic." Many farmers feed more because the amount of feed is equivalent to the yield (based on years of experience in shrimp farming). Even if the yield is not comparable to the amount of feeding, as long as the reasonable feeding level is reached, it is "worth the money" for shrimp farmers.
It is common to think that there should be a certain ratio of feed volume to yield (feed usage coefficient). If the ratio is 0.9-1.2:1, it proves that the shrimp is at a reasonable feeding level; if the ratio is 1.3-2:1, it proves that the shrimp is at an unreasonable feeding level.
Fully grasp the timing of feeding to ensure the healthy growth of shrimp. To know the first data behind the success of shrimp farming is how much material is invested, not how many shrimp fry are released. As for how many specifications to raise? How many cartons of shrimp are raised? They're all afterwords. Is feeding really so exquisite? Some farmers who have experienced the death of shrimp after being on the shrimp also feel afterwards that the feeding technique affects the trend of shrimp farming. Some farmers simply do not care about investing more and investing less, investing early and late, as long as they can raise shrimp, they are afraid of low production; just like the stock market, selling in and buying, buying and selling, as long as they can earn, they are afraid of not making much.
Understanding how shrimp eat when feeding shows its own level of hunting technology. It's like basketball, the way athletes play, has exposed the real level. If you compare shrimp to strong grass, you should not be afraid of the wind, but the wind knows the grass. If farmers want the shrimp to eat fast, then they need to give it more energy, grab food while also ensuring long meat, but absorption shows long meat.
It is often seen that some farmers sigh: when the shrimp have an empty stomach, they feel that the shrimp cannot eat the ingredients, let alone absorb it. What makes shrimp so anorexic? In fact, when shrimp feed contaminated food, they are more likely to eat Vibrio. This leads to jejunum and jejunum. In the cephalothorax of shrimp, the large jaw of the head is responsible for chewing, the first and second jaws are assisted in feeding, and the 3 pairs of jaws and feet on the chest are also assisted in feeding. Like the human hand, it assists feeding, and once the jaw foot is infected (attacked by germs, it is dark yellow), and it also contaminates the food after contact with it. Although the shrimp itself has the ability to clean, but can not completely block the invasion of Vibrio (especially when its immunity declines or when the bacteria outbreak), after its own shelling, the remaining shell has been with Vibrio, some anxious to replenish calcium shrimp, will eat the shell, causing infection. Therefore, even if the indicators of Vibrio in water quality meet the standard, there will be shrimp jejunal and empty stomach (due to the indirect oral transmission of Vibrio in the shell, resulting in stomach problems). Some farmers always think that it is related to eating, the first shrimp feed is invaded by mold, and it often grows explosively in the water; more farmers think that it is related to dead algae, and the algae bacteria are unbalanced, from the outbreak of harmful bacteria (such as Vibrio helio).
Vibrio, which first invades the mouth of shrimp, as well as the esophagus, then the stomach, and then the intestines. The mouth is located on the ventral surface of the cephalothorax, surrounded by "mouth organs", the back of the mouth is the esophagus (short and straight), the stomach is divided into two parts, the anterior stomach is large (containing chitin teeth, forming a gastric grinder), and the posterior stomach is small. The posterior part of the stomach is connected to the midgut (long tubular) and to the rectum (short and thick) in the posterior segment of the midgut (including the posterior cecum of the midgut).
The term "jejunum and jejunum" almost inverts the ordering of the shrimp digestive system. Why not say empty stomach and jejunum? Because when the shrimp is alive, the body is transparent, and the jejunum is easy to see, so it is ordered first; the empty stomach is only associated when there is no food in the intestine. It's like when there's no water in the faucet, it's related to the water plant that has no water supply.
For shrimp with an empty stomach, there is no food in the anterior and posterior chambers. When the digestive juice (bile) secreted at the opening of the digestive gland is less and less, the food becomes difficult to digest, for a long time, because the food can not be guaranteed to be fully digested, before transporting the midgut, it must pass through the pre-midgut blind sac, because the food is difficult to completely digest or the food itself carries bacteria (lysozyme in the bile can dissolve the associated bacteria), resulting in damage to the preeminal brace, and even infected. Therefore, some farmers believe that changes in the anterior braccintal sac of the shrimp midgut are associated with their appetite, while changes in the posterior brace of the midgut are associated with their absorption.
To understand the feeding of a shrimp is to understand its stomach. The liver of shrimp (also known as the liver pancreas or midgut gland) is at the gastrointestinal junction, and the liver and pancreas are a pair of digestive glands, rather than a single digestive gland. On the one hand, it is involved in digestion, and on the other hand, it is involved in absorption. This proves that the stomach of the shrimp is simply the organ that stores and chews food (the front stomach is large) and delivers food.
Some farmers believe that the slow feeding of shrimp is often related to the poor turnover of the liver. When the ingredients have not been added, the measures based on more oxygenation are used to improve the appetite of shrimp. In fact, shrimp are slow to feed for a complex reason. To exclude one by one, it is a tedious process. Sometimes "medicine to disease" is a good way: some farmers are well aware of the characteristics of a drug, only with a good use of a drug can be fast, first from the front of the intestine blind sac to see the change (microscope), and then the right medicine.
If it is said that the use of good drugs or more drugs can reduce the phenomenon of "jejunum and jejunum", then the phenomenon of "jejunum and jejunum" is aggravated without medication or less medication. This is a change in the variety and frequency of use according to the time of shrimp farming: shorten the interval and cross-apply it during the epidemic season, and extend the interval and cross-apply when the disease is not endemic. Some farmers believe that shrimp are tested when they do not use drugs; when they use drugs, they test the management level of farmers. In the case of shrimp without accidents, as long as the shrimp body color is good when the oxygen is sufficient and the nutrition is sufficient; and in the face of bad weather or unexpected conditions, the body color of the shrimp should be restored in time, otherwise the best time for prevention or treatment is missed, and the difficulty of shrimp breeding management is further increased. Therefore, sometimes some farmers have done enough to say what measures, and the shrimp is still in trouble, which is already "doing everything and seeing providence". In fact, the problem of shrimp farming process is a common thing, how to achieve "careful sailing to the ship of ten thousand years"? I believe that in addition to not shirking responsibility, we must also understand the characteristics of shrimp to adapt to different environmental changes.
When farmers understand the jejunum and jejunum of shrimp, it is observed that the probability of good quality shrimp fry is independent of the probability of jejunal and empty stomach. Some farmers grasp the first pass of shrimp farming, that is, to feed the shrimp stomach, the stomach is good, is really good. Shrimp that can be fed by farmers also prove that their chewing ability (well-developed stomach structure) is particularly strong, just like students in math competitions, who can turn in papers in a short period of time, indicating that their computing ability (skills in handling numbers) is particularly strong. Therefore, to care about the healthy growth of shrimp, start with raising the stomach of shrimp.
Throughout the shrimp farming process, some farmers use insecticides. Some insecticides show a "gastric poisoning" mode (toxicity enters the stomach of the insect body and kills it), killing insects quickly; some insecticides show "nerve poisoning" (toxicity enters the nerves of the insect body and kills it), slowly killing insects. If the shrimp pond is found to have poor water quality after entering the water and cannot be treated in time, over time, the chance of "water worms" will increase. In order to "settle once and for all", some farmers choose "gastric poisoning" insecticides, so that they have the opportunity to have an impact on the stomach of shrimp. Sometimes, after seeing farmers killing insects, they find that shrimp eat slowly, and they last for several days. Therefore, when insecticide is a "slight harm" to the shrimp stomach, it is difficult for the shrimp to recover the level of "eating fast" (some people think that it is just a detoxification).
Only by treating the stomach of shrimp correctly can we witness the healthy growth of shrimp. Some people have proposed that shrimp stomach first nourish the liver (such as poplar pollen, its active substance can activate the shrimp's liver cell repair ability, is conducive to the normal secretion of digestive enzymes), just like making bread first kneading dough, yeast powder can activate the shaping ability of flour. Therefore, the application of liver drugs is also one of the means to prevent the occurrence of jejunal fasting.