CATDOLL : CATDOLL: I have 600 acres of water surface at home. How many silver carp fry can I put in there?

1. I have 600 acres of water surface at home. How many silver carp fry can I put in?

Friends often have questions, I am raising fish now, how many seedlings should I put in one acre? Indeed, I believe many people have this question, how many seedlings are most suitable for a pond?

Generally, under the same conditions, the density of the main cultured species in deep ponds can be appropriately higher than that in shallow ponds; ponds with good power situations and strong oxygenation capabilities can increase the stocking density of the main cultured species; ponds with convenient transportation can stock in a gradient and increase the density, and sell "hot water fish" in the middle to reduce risks and increase production at the same time; ponds with deep silt and high debris can increase the stocking density of silver carp; deep ponds can be multi-layered to increase the comprehensive utilization space of water bodies and reduce resource waste. For example, silver carp can be paired with it, which is a middle and upper layer fish and can control the growth of algae very well. The ecological role of silver carp in water bodies, that is, its water regulation role is more important than making money, while crucian carp, black carp, etc. all live in the middle and lower layers of water bodies, and cleaning up some feed residues also has a certain role. When we release fish fry, we must understand the habits of the main breeding species and some other matching species.

There is another very important point, which I want to emphasize, which is closely related to the stocking density, that is, the mechanical configuration of the pond. Let's take a simple example. In Guangdong, there are many small ponds of three to five mu. The pond rent is very high, ranging from one or two thousand to nearly ten thousand. With such a high pond rent, if the pond is not highly productive, the fish that come out can't even cover the rent, let alone make money. So we see that the ponds in Guangdong can stock thousands of fry and produce tens of thousands of catties per mu. What is the basis for this? It is the combination of various machines. The average oxygenation power per mu should be 3-6kw. Of course, the requirements for the level of breeding management are also higher; in some places like Yancheng, Jiangsu, there is abundant water surface, and a pond may be hundreds of mu. With more water surface, the requirements for breeding density are naturally not so high. The general standard for stocking is to produce fish at a yield of 1,000-1,500 catties per mu. This is the actual situation on the front line.

As for the size of the seedlings put into the pond, in actual production, most people like to put in large seedlings, but then a problem arises: the larger the fish, the easier it is to get hurt. The smaller the fish struggles much less intensely, and the chance of getting hurt is much less.

Take the comparison between small grass carp seedlings of about 10 cm in length and large grass carp seedlings of 13 taels each as an example: in the same growth cycle (for example, one year), there is not much difference in the final individual specifications, and both can reach the market weight in the same period (year). Perhaps the large grass carp seedlings can be marketed a little earlier, but there is a great risk of fish injury and death after the large seedlings are put into the pond.

There is another thing to note: the weight gain multiple of small seedlings is much greater, and the profit of fish farming is closely related to the weight gain multiple of fish. The greater the weight gain multiple, the lower the cost of growing to a certain weight, and of course the greater the benefit. In addition, the cost difference between large seedlings and small seedlings is also very large. Grass carp seedlings of about 10 cm in length are mostly a few cents per tail, but grass carp seedlings of a certain weight may cost from one yuan to several yuan per tail, which inadvertently increases the initial investment.

In short, small seedlings are not easily injured, have a high survival rate, low risk, large weight gain multiples, and much better benefits; large seedlings have a much greater risk of injury, a small weight gain multiple, and a smaller benefit; these aspects must be taken into consideration. Of course, when releasing fry, it is necessary to consider many aspects such as the water environment, aquaculture species, feeding methods, and economic goals, use scientific methods to estimate the reasonable stocking amount, release seedlings of appropriate sizes, maximize water utilization, form a healthy development of aquaculture, and maintain the sustainable development of aquaculture while creating greater economic benefits.

To enter this industry, you must first understand some basic knowledge of breeding and find a platform for self-study. The money spent on breeding is your own hard-earned money, and the cost investment is huge. The one who can help the families in Dazi Town raise good fish and make big money does not rely on some technicians or the old master next door, but on your own investment of learning energy. The more you learn and the more you see, it is actually not difficult to do well in aquatic products.

With 600 acres of water surface, if the survival rate is relatively high, about 100,000 silver carp fry can be released. The survival rate of silver carp fry is relatively high.

Different combinations and different environments will lead to huge differences in the results.

It is usually about 2 meters deep. If it is mainly silver carp, it will weigh about 300-400 kilograms. If it is mixed with simple carp and reasonable combination, the large carp will weigh about 80-100 kilograms.

2. How long does it take for wild silver carp to reach adulthood? Will they give birth after reaching adulthood?

A female will give birth only when the cub has grown to more than ten kilograms.

3. How long does it take to raise silver carp from a small fish to 2.5 catties in a reservoir?

Generally speaking, it takes 2 to 3 years.