Eel factory.

Seeing his brother-in-law's nervous and anxious appearance, Li Duoyu didn't ask, and rushed directly to the side of the pond.

Seeing this, the second brother Li Yaoguo also came over, and Chen Wenchao immediately said: "Xiaolan, you help me collect the fish, and I will also go and have a look." ”

Li Duoyu glared on the spot: "Take care of your clove fish, you don't have to worry about other things." ”

Li Duoyu currently has a total of five ponds, adding up to about 100 acres in total.

There are about 2,000 blue crab seedlings per mu, and in this more than 100 acres, Li Duoyu has put nearly 200,000 blue crab seedlings in total.

Most of these blue crab seedlings were caught by Zhao Erniu, and he earned nearly 2,000 yuan in total.

The breeding area and quantity like him are not big, and they must not be compared with Taizhou, but they are not small.

On the way here, brother-in-law Zhang Mingsheng blamed himself with a face: "I didn't pay attention for two days, and I died so much." ”

Li Duoyu patted him on the shoulder: "Small things, those who are engaged in breeding, how can there be immortals." ”

"But I really died a lot."

Seeing that his brother-in-law had been saying that he had died a lot, Li Duoyu frowned and asked, "Shouldn't there be a problem with all five ponds?" ”

"That's not true, it's the two that started with the problem."

"As long as it's not all wiped out." Li Duoyu was a little relieved, if there was no collective problem, it should not be a problem with the water body, it could be other reasons.

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 to catch the dead crabs.

On the bamboo raft, two wooden barrels were placed, as if they were fully filled.

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

Under normal circumstances, there are no blue crabs in broad daylight, but they didn't think that they would climb the slope on the shore during the day.

Each of these living blue crabs by the pond looked sick, and some of them were holding their feet, as if they were afraid to touch the water.

Some have eight paws facing the sky, looking at the situation, they are already dead, and their intuition tells Li Duoyu that the blue crabs at the mouth of the two ponds are estimated to be finished.

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

The first blue crab in Tangkou has been raised for more than two months, and now most of them are already three or four taels.

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

In aquaculture, the breeding cycle of blue crabs is relatively short, from juvenile crabs to adult crabs, almost 100 days.

It's not that the blue crab grows very fast.

Mainly, when they were caught in the mangroves, they had already gone through a fairly long "perverted" life.

When the blue crab first hatches, it is like a daphnia, very small, and if you don't look carefully with the naked eye, you can't see it at all.

In the form of daphnia, they need to go through six stages of growth before they become "airplane seedlings", that is, big-eyed larvae.

And after the big-eyed larvae are "metamorphosed", they will grow into the appearance of crabs.

Blue crabs have to go through 13 molts in their lifetime, of which 6 are metamorphosis molts for larvae, 6 times for growth molting, and 1 time for reproductive molting.

Almost every time it molts, the blue crab can gain 70% of its weight.

At present, most of these dead blue crabs have already molted eleven or two times, and many of them are about to start reproduction and molting.

As long as it has undergone this molt, the blue crab has already been considered X mature, and during this time, the female crab that has not yet mated is called a dying crab.

Li Yaoguo, who came with him, looked at the whole pond of dead crabs, which was distressing.

"There are many fish, at least thousands of them have died in this pond."

"I feel that each one has the appearance of three or four taels, even if it is calculated according to one pound and five cents, this has lost thousands."

"Hmm."

Li Duoyu sighed, in fact, he really wanted to tell his brother, you are too conservative, how can you only die a few thousand, it should be far more than that.

Blue crabs are so famous that they can't even be seen when they die.

When the fish dies, it will float on the surface of the water, specifically to tell you that I am already dead.

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 party is molting.

In addition, it is benthic, and after death, it will rot directly underneath, and many times, even if it is all dead, you don't know.

Li Duoyu suddenly remembered the self-deprecation of some blue crab farmers: You can still see dead crabs, which is quite face-saving, at least it can prove that there are still crabs in the crab pond that are not dead.

For farmers, it is normal to see dead crabs, but if you can't see dead crabs for a long time, it is called a horror.

There used to be a fish farmer in their town, who changed careers and ran to raise blue crabs.

Because I haven't seen dead crabs, I thought I raised them very well, and I bragged about them everywhere, but when it was time for the harvest, I caught one or two hundred blue crabs in dozens of acres of ponds.

However, if a large number of dead crabs suddenly appear like this, it means that the situation is already very serious, and you have to prepare to clear the pond.

Li Duoyu checked the water body and found that there was no big problem, no algae explosion, and no smelly pond.

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

It stinks before it dies.

Looking at the blue crab that was spitting bubbles on its feet, Li Duoyu had roughly guessed what the problem was.

I directly broke off its crab cover on the spot, and sure enough, there was a large amount of fluid in it.

Under normal circumstances, the liquid is transparent and sweet, but this yellowing is still very fishy, and it looks like you are sick.

After Li Duoyu broke the crab claws, there was also a liquid of light yellow water flowing out, and the crab gills had turned black.

Yellow water disease + black cheeks!

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

But the blue crab suffers from these two diseases at the same time, and there is no solution when the gods come.

Li Duoyu is a little incomprehensible, this time the blue crab farming is almost all in accordance with the highest standards.

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

The water quality seems to be fine, but what went wrong caused a large number of blue crabs to die.

Li Duoyu knows what disease it suffers from, but what caused it is not known yet, so he can only check it one by one.

Li Duoyu asked, "Brother-in-law, have you changed the water recently?" ”

Zhang Mingsheng said: "Yes, according to what you said, it will be changed every three days, and one third will be replaced each time." ”

Strange then?

If you change the water frequently, there will be no problem with the water quality, and there is no reason for this to happen.

In the past, when he encountered this kind of problem that even he couldn't solve, he could only ask crab experts, but in this era, where did the experts come from.

He's the expert.

Li Duoyu glanced at Lao Li, who was still fishing for dead crabs, and asked suddenly: "Brother-in-law, who is raising blue crabs recently." ”

"Recently, it's all been raised by Daddy."

Li Duoyu was stunned for a moment, he didn't know why, he had an intuition that the problem might be Daddy.

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

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

Li Duoyu simply combed it and roughly knew what the problem was.

Although my brother-in-law has been changing the water, and because of the mangrove forest, the water body seems to be fine, but there is a problem at the bottom.

Fish farming starts with water.

Crabs can be raised first.

After all, crabs are benthic organisms, and if there is a problem below, the water above is useless.

It is estimated that this situation has been going on for a long time, and the recent temperature difference has been relatively large, and the resistance of the blue crab has weakened, so it has exploded.

At this time, Lao Li rowed over on a bamboo raft, and he fished a whole bucket of dead crabs, looking at Li Duoyu with a little anger.

"Blue crabs are not easy to raise, they know how to run around all day long, look at how much money they have to lose when so many crabs die."

Li Duoyu scratched his head.

"Daddy, failure is the mother of success, and I'm not a fairy, if I succeed in raising it casually, others will probably treat me as a monster."

Lao Li snorted coldly.

"Then you raise less, there is no need to raise so much."

"Hey, hey, hey."

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

Li Duoyu shook his head, and did not tell everyone about the small fish feed found in the eating.

"I really don't understand this time, next, let Daddy stop feeding the blue crabs first, and let me feed them myself to see if I can find out what the reason is."

The second brother Li Yaoguo sighed, he found that the road of breeding is really difficult.

Even if the best kelp is raised, only the fish are better raised and meet the export standards.

The other villages in the town are also mediocre, and they can't even meet the standards for export.

However, compared with blue crab and eel farming, kelp farming is simply a fairy project, except for the seedling clamping and kelp harvesting, a lot of labor is required.

The rest of the time period is really worry-free, and it won't be like eels and blue crabs, which will die at every turn.

The scene in front of him reminded him of the scene some time ago, when he fished half a pond of eel fry.

Li Yaoguo couldn't help but ask: "There are many fish, which one is better to raise, eel or blue crab." ”

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

Li Yaoguo exclaimed: "Then what if the blue crab also has a complete set of mature breeding technology?" ”

Li Duoyu smiled.

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

"Not sure what to be better than an eel?"

Li Duoyu nodded: "Since the blue crab has to molt, there are too many uncontrollable factors. ”

In the previous life, there were eel farmers who controlled the mortality rate of eels to less than one percent, but even if they were farmers who could raise blue crabs, no one dared to brag about this.

This time, Li Duoyu invested a total of 200,000 blue crab seedlings, and when the final harvest came, if there were 20,000 blue crabs, he would already be quite satisfied.

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

Every week, he puts the ground cage to check the latest changes in the blue crabs, so to speak, and every time he checks it, he is very excited.

Because every time the blue crab will be bigger, he is really happy to see the blue crab grow to half a catty in less than two months.

didn't think that it had only been a few days, and he had become like this, and he was also very self-blaming, because in the past few days, he had been busy with the sixth pond and neglected this side.

"Many fish, if the mortality rate of blue crabs is so high, then wouldn't it be a blood loss for us to build this embankment?"

Li Duoyu smiled: "The loss will not be a loss, the pond is up, it is a million profits, besides, our pond is not only for blue crabs, we can also use it to raise some shrimp." ”

As soon as they heard about shrimp farming, the second brother Li Yaoguo and brother-in-law Zhang Mingsheng had their eyes wide open.

Shrimp is definitely a luxury in this year, and a pound of blue crab can be sold for at least four or five yuan.

Li Yaoguo exclaimed: "Many fish, do you know how to raise shrimp?" ”

Li Duoyu scratched his head, and then stretched out his little thumb and pointed out: "Little brother is not talented, only a little bit." ”

Li Yaoguo is also a little used to it now, every time Li Duoyu says that he will be a little bit, it must be a lie.

But thinking that a large piece of fish would die every time he was raised, Li Yaoguo couldn't help asking: "More fish, is it easy to raise shrimp, or is it better to raise blue crabs?" ”

Li Duoyu thought about it seriously: "Theoretically, shrimp should be easier to raise than blue crabs." ”

"What about eels?"

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

"Understood."

(End of chapter)