In 1983, a small island started from a large farmer

Chapter 432: Stink before death

Eel Factory.

Seeing his brother-in-law's nervous and anxious look, Li Duoyu rushed directly to the pond without asking.

The second brother Li Yaoguo also came with him when he saw this. Chen Wenchao immediately said: "Xiaolan, help me collect the fish, and I will go and take a look."

Li Duoyu glared on the spot: "Collect your cloves carefully, and you don't have to worry about other things."

Li Duoyu currently has five ponds, totaling about more than 100 acres.

The number of green crab seedlings released per acre is about 2,000. In these more than 100 acres, Li Duoyu released a total of nearly 200,000 blue crab seedlings.

Most of these blue crab seedlings were caught by Zhao Erniu, which earned him nearly two thousand yuan in total.

The farming area and quantity like his are certainly not comparable to those in Taizhou, but they are still small.

On the way here, my brother-in-law Zhang Mingsheng looked remorseful: "I didn't pay attention for just two days, and so many people died."

Li Duoyu patted him on the shoulder: "It's a trivial matter. Those who engage in breeding will never die."

"It feels like each one is worth three or four taels. Even if it is calculated as 50 cents per catty, this is a loss of several thousand."

Some of them had eight claws pointing upwards and looked dead. Li Duoyu's intuition told Li Duoyu that the blue crabs at the entrance of the two ponds were probably doomed.

Each of the living blue crabs beside the pond looked sickly, and some had their feet propped up, as if they didn't dare to touch the water.

When blue crabs first hatch, they are just like water fleas. They are very small and cannot be seen with the naked eye unless you look carefully.

"Ah."

After looking at the green crab that was propped up on its legs and blowing bubbles, Li Duoyu roughly guessed what the problem was.

Mainly, when Li Duoyu caught them in the mangroves, they had already experienced a long "metamorphosis" career.

"There are so many fish. At least several thousand of them must have died in this pond."

In addition, they are bottom-dwelling. After death, they just rot underneath. In many cases, even if they are all dead, you will not know it.

Li Duoyu sighed. In fact, he wanted to tell his brother that you were too conservative. How could you only die a few thousand? It should be far more than that.

Li Duoyu also carefully observed the pond and found that the situation was really serious. A large number of green crabs appeared around the pond.

Because I never saw any dead crabs, I thought I was raising them very well and bragging about them. However, during harvest time, one or two hundred blue crabs were caught in dozens of acres of ponds.

In the form of water fleas, they have to go through six stages of growth before they become "airplane seedlings", which are big-eyed larvae.

In aquaculture, the breeding cycle of blue crabs is relatively short, taking about one hundred days from juvenile crabs to adult crabs.

The big-eyed larvae will grow into crabs only after "metamorphosis".

Stink before death.

Most of the blue crabs that have died so far have already molted eleven or two times, and many are about to begin reproductive molting.

Blue crabs are notoriously hard to see even if they are dead.

It’s not that blue crabs grow particularly fast.

"That's not true. The two people who had the problem were the two of us who started it."

The crab shells are already over ten centimeters wide, and some of them grow faster, even weighing more than half a catty.

The blue crabs at the entrance of the first pond have been raised for more than two months, and most of them are now as big as three or four ounces.

Seeing that his brother-in-law kept saying that many people died, Li Duoyu frowned and asked, "Is there something wrong with all five ponds?"

For farmers, seeing dead crabs is normal, but not seeing dead crabs for a long time is a horror.

"As long as the whole army is not wiped out, it will be fine." Li Duoyu felt a little relieved. If there was no collective problem, it should not be a problem with the water body. It might be other reasons.

Almost every time they shed their shells, blue crabs can gain 70% of their weight.

Li Duoyu slid to the edge of the pond and picked up two green crabs that were not dead, and two more blue crabs that were dying.

"A lot of people died."

There used to be a fish farmer in their town who changed his career to raise blue crabs.

However, if a large number of dead crabs suddenly appear like this, it means that the situation is very serious and preparations must be made to clear the pond.

Green crabs go through 13 molts in their lifetime, including 6 metamorphosis molts for larvae, 6 growth molts, and 1 reproductive molt.

Li Duoyu checked the water body and found that there were no major problems, no algae blooms, and no smelly ponds.

There were two wooden barrels placed on the bamboo raft, which seemed to be fully filled.

Li Duoyu suddenly remembered the self-deprecation of some blue crab farmers: It was a great honor to see dead crabs, at least it proved that there were still crabs in the crab pond that were not dead yet.

But those dead crabs really stink. Li Duoyu found that those dying blue crabs also had a stink.

As long as the blue crab has undergone this molting, it is considered mature. During this time, the female crab that has not yet mated is called an embryo crab.

But blue crabs are different. Not only will they kill each other, but when the breeding density is high, they will even eat their own kind while the other is shedding their shells.

Li Yaoguo, who came with him, looked at the whole pond of dead crabs and felt heartbroken.

Under normal circumstances, blue crabs are not seen in broad daylight, but unexpectedly, they also climb up the slope of the shore during the day.

When they arrived at the first pond, Li Duoyu found his father rowing a bamboo raft on the side of the pond, holding a net in one hand and fishing for dead crabs.

After the fish dies, it will still float on the water. I am here to tell you that I am already dead.

I opened its crab cover on the spot, and sure enough there was a lot of fluid inside.

Under normal circumstances, the liquid is clear and sweet, but this one is yellow and smelly, which makes you sick at first sight.

After Li Duoyu broke off the crab claws, light yellow liquid also flowed out, and the crab gills had turned black.

Yellow water disease + black cheek disease!

If you suffer from enteritis or something like that, Li Duoyu can also be treated with Chinese herbal medicine.

But blue crabs suffer from these two diseases at the same time, and even if the gods come, there is no solution.

Li Duoyu was a little hard to understand. This time blue crab farming was almost done according to the highest standards.

In terms of feed, there is definitely no problem. The best snails and shellfish are used.

There seems to be no problem with the water quality, but what went wrong in the process caused a large number of blue crabs to die.

Li Duoyu knew what kind of disease it was suffering from, but he still didn't know what caused it, so he could only investigate it one by one.

Li Duoyu asked: "Brother-in-law, have you changed the water recently?" Zhang Mingsheng said: "Yes, as you said, change it every three days, one-third each time."

Is that weird?

If you change the water at this frequency, there will definitely be no problem with the water quality. There is no reason why this should happen.

In the past, when encountering problems like this that even he couldn't solve, he had to call in crab experts, but in this day and age, where are the experts?

He is the expert.

Li Duoyu glanced at Lao Li, who was still fishing for dead crabs, and suddenly asked: "Brother-in-law, who is raising the blue crabs these days?"

"My father has been raising me lately."

Li Duoyu was stunned for a moment. He didn't know why, but he had an intuition that the problem might lie with his father.

He took a long shovel, went to the area where shellfish feed was often fed to the pond, and shoveled up some silt from the bottom.

He found that the mud was very smelly and there were many insects crawling on it. Most importantly, he found some small fish that had been eaten until only their heads were left.

Li Duoyu briefly sorted it out and roughly knew where the problem lay.

Although my brother-in-law has been changing the water all the time, and because there are mangroves, the water body seems to be fine, but there is something wrong at the bottom.

To raise fish, raise water first.

To raise crabs, you must first raise the bottom.

After all, crabs are bottom-dwelling creatures. Once there is a problem below, it will be useless no matter how good the water above is.

It is estimated that this situation has been going on for a long time. In addition, the temperature difference has been relatively large recently, and the resistance of green crabs has weakened, so this outbreak has occurred.

At this time, Lao Li came over on a bamboo raft. He fished out a whole bucket of dead crabs and looked at Li Duoyu slightly angrily.

"If you don't raise blue crabs properly, they will just run around all day long. Look how much money you will lose if so many crabs die."

Li Duoyu scratched his head.

"Dad, failure is the mother of success. I'm not a god. If I succeed if I raise anyone casually, others will probably regard me as a monster."

Lao Li snorted coldly.

"Then you raise less. There is no need to raise so many."

"Hey hey hey."

After Li Duoyu returned to the shore, his second brother Li Yaoguo asked: "Have you found the reason?"

Li Duoyu shook his head and did not tell everyone that he found small fish feed in the food.

"I really don't understand this time. Next, let dad stop feeding the blue crabs. Let me feed them myself and see if I can find out the cause."

The second brother Li Yaoguo sighed. He found that breeding was really difficult.

Even the best-raised kelp is only better raised by fish and meets the standards for export.

The other villages in the town are also average and cannot even meet the standards for export.

However, compared with blue crab and eel farming, kelp farming is simply a magical project, except for the time of planting seedlings and harvesting kelp, which requires a lot of labor.

The rest of the time is really worry-free, and you won't be like eels and blue crabs, who can easily die in front of you.

The scene before him reminded him of the time when he caught half a pond of eel fry some time ago.

Li Yaoguo couldn't help but ask: "There are many fish, which one is easier to raise, eels or blue crabs?"

Li Duoyu thought for a while and replied: "If eels have a complete set of mature breeding techniques, then eels will be easier to raise."

Li Yaoguo was surprised: "What if blue crabs also have a complete set of mature breeding techniques?"

Li Duoyu smiled.

"It's hard to talk about this thing. I'm not sure about it anyway."

"Not sure about eels?"

Li Duoyu nodded: "Because blue crabs need to shed their shells, there are too many uncontrollable factors."

In the past life, there were eel-raising experts who had already controlled the mortality rate of eels to less than one percent, but even if they were new blue crab farmers, no one would dare to brag about this.

This time Li Duoyu invested a total of 200,000 green crab seedlings. If there were 20,000 green crabs in the final harvest, he would be quite satisfied.

Brother-in-law Zhang Mingsheng frowned. He fenced the pond and had shares in the blue crabs, so he has been paying close attention to these blue crabs.

Every week he puts out the ground cage to check the latest changes in the blue crabs. It can be said that he is very excited every time he checks.

Because the blue crabs grew bigger every time, and he was really happy to see the blue crabs grow to half a catty in less than two months.

Unexpectedly, it has only been a few days, and it has become like this. He also blames himself very much, because in the past few days, he has been busy with the sixth pond and neglected it.

"If there are so many fish and blue crabs with such a high mortality rate, wouldn't we lose money if we build this dike?"

Li Duoyu smiled: "If you lose money, you won't lose money. Once the pond is built, it will be a huge profit. Besides, our pond is not only used to raise blue crabs, we can also use it to raise some shrimps."

When they heard about shrimp farming, their second brother Li Yaoguo and brother-in-law Zhang Mingsheng's eyes widened.

Shrimp is definitely a luxury item these days. A pound of blue crabs only costs one yuan, but a pound of shrimp can be sold for at least four or five yuan.

Li Yaoguo was surprised: "There are many fish, do you know how to raise shrimps?"

Li Duoyu scratched his head, then stretched out his little finger: "I'm not talented, I only know a little bit."

Li Yaoguo is somewhat used to it now. Every time Li Duoyu says he knows a little bit, it must be a lie.

But thinking that a large area would die every time he breeds, Li Yaoguo couldn't help but ask: "There are many fish, which is easier to raise, shrimps or blue crabs?"

Li Duoyu thought carefully: "Theoretically speaking, shrimps should be easier to raise than blue crabs."

"How about compared to eels?"

Li Duoyu frowned and said, "For me personally, eels are probably the best to raise."

"understood."

(End of this chapter)