CATDOLL : CATDOLL: How to identify the quality of shrimp feed

1. How to identify the quality of shrimp feed

How to identify the quality of shrimp feed?

1. Look at the main nutritional indicators. Among them, the most important are crude protein, crude fat, lysine, methionine, arginine, effective phosphorus (phosphorus that shrimp can digest and absorb), crude fiber, and ash content. Most of these indicators are marked on the label and are generally reliable. A small part is not marked, and it is impossible for users to send samples for testing. As for the very important various vitamins and trace elements, the content is not marked. It should be pointed out here that some users only look at the crude protein content and think that feed with high protein content is good feed, which is a misunderstanding. Like fish feed, the protein content of shrimp feed is not the higher the better. Excessive protein and fat content will affect the growth of fish and shrimp. Raising fish and shrimp with such feed will not only increase the breeding cost, but also affect the growth of fish and shrimp.

Second, look at the raw materials used. Nutritional indicators only reflect its quantity, not its quality, and quality is very important. For example, fish meal protein and soybean meal protein are different, and soybean meal protein is different from cottonseed meal and rapeseed meal protein. The main raw materials used in shrimp feed should be fish meal, soybean meal, peanut meal, corn meal, corn gluten meal, high-gluten flour, fish oil, lecithin, etc. The label generally indicates the name of the main raw material, but there is no very important ratio.

3. Simple judgment of quality. Here are a few points for users' reference.

1. Color. Good shrimp feed is light grayish brown, consistent in color, and oily. However, the color is affected by the color of the raw materials, and there will be changes in depth, which cannot be regarded as the main quality factor.

2. Smell. Good shrimp feed should have a fresh smell of fish meal, shrimp or squid. After being sealed for a long time, there should be no pungent smell or smell of oxidized oil. If it is clear and not turbid, it means that the fish meal used is good. If it is turbid, it means that more fish meal or fish oil is used but the quality is poor.

3. Appearance requirements: The surface of the shrimp feed should be smooth, the fracture should be flat, the length should be relatively consistent, and the particles should be uniform.

4. Grinding fineness. Crush the shrimp feed with a glass bottle and observe the grinding fineness. Good shrimp feed is ground very finely without any obvious large particles.

5. Water resistance and softening time. After soaking the shrimp material in water for 2-3 hours, the shrimp material will swell without falling apart, without cracks, or splits at both ends. After soaking in water for 30-40 minutes, it will be completely softened. The shrimp material will not be hard when squeezed by hand, and will not fall apart when squeezed flat.

6. Simple biological test. Put the softened shrimp food in places where ants are active and flies are likely to go. Ants and flies will eat good shrimp food. If the softened shrimp food is placed in the ant's passage, the ants will not want to approach it and will bypass it, then this shrimp food is not good.

7. Attractiveness. Use a homemade small net to sink a small amount of shrimp feed into the shrimp pond. After about half an hour, lift the small net out of the water and observe how much shrimp feed is left in the net and how many shrimp are in the net to determine its attractant. Generally speaking, good shrimp feed has better attractant. However, the quality of shrimp feed cannot be judged only by its attractant. Because some shrimp feeds may not have very good internal quality, but if a lot of attractants are added, shrimp will like to eat it, but the breeding effect is not equally good; some shrimp feeds have very good internal quality, but no attractants are added or less attractants are added. Although shrimp do not like to eat it very much, the breeding effect is very good. What is certain is that shrimp will not have feeding difficulties with good shrimp feeds, and they will be able to eat normally after getting used to it.

2. Where can I go fishing in Hangzhou?

Biang Tail Fishing Park

8 points

Fish collection: 4 yuan per catty, adjusted according to market conditions, expected to open on June 1

Charge: 100-300 yuan/day

Fishing ground type: Black pit

Zhongsha River

2 points

The fish is quite big and not easy to open.

Fishing ground type: Rivers and wild ponds

Shangtang River

7 points

If anyone is fishing at night, come out and cast your rods.

Fishing ground type: Rivers

Xiaoxiang Aquaculture Farm

6 points

The fishing ground is located at the bank of the Yanjiang River under Liuqiao. There are more than ten kinds of fish in the pond, including crucian carp, bream, white bream, perch, etc. Lure fishing will be open soon. All fish are farmed in the original pond. No matter the color of the fish, the taste is very good. The key is that the boss is very nice! The charge is 200-400 yuan/6 hours. The recycling price is different for different fish species...

Charge: 200-400 yuan/6 hours

Fishing ground type: Black pit lake reservoir river

Sibu River

7 points

There are many small crucian carps, carps, small whitebait, and long thorns. There are often net workers.

Fishing ground type: Rivers

Mantis Shrimp Fishing Center

9 points

The address of the fish pond is the north gate of Yuhang Huiri Temple. Please inform the group owner in advance that I am also a fishing enthusiast. The fishing center mainly meets friends through fishing. All fishing friends are welcome to come and fish. Free practice places are provided regularly. Please pay attention to the notifications in the group for details. Usually, the cost price for practicing is 20 yuan a day...

Charge: 20 yuan/day

Fishing ground type: Black pit

Langzhanghe

6 points

Love hanging bottom

Fishing ground type: Rivers

Wen's Fishpond

9 points

The charge is 15 yuan per catty.

Charge method: 15 yuan/catties

Fishing ground type: Jintang Farmhouse

Dongwu Reservoir Fishing Center

8 points

Dongwu Reservoir is a small-sized reservoir with a beautiful environment. It has been operating for 30 years and is one of the earliest fishing reservoirs in Lin'an. This reservoir can be used for table fishing, lure fishing, and cutting fishing. The reservoir has more than a dozen species of fish! Crucian carp is 15 yuan/jin, and soft-shelled turtle is 120 yuan/jin.

Charge method: 15-120 yuan/catties

Fishing ground type: Jintang

3. Mr. Li has 25,000 yuan in current funds. He plans to borrow no more than 25,000 yuan from the bank for mixed crab and shrimp farming.

Suppose you want to borrow x yuan from the bank, 3900×25000+x4900-8%x≥35000, solution is: x≥21094 yuan. And because the rent should be in integers, 25000+210944900≈9.4, so you should rent 10 acres. When renting 10 acres, you need to borrow: 10×4900-25000=24000. Answer: Uncle Li should rent 10 acres and borrow 24,000 yuan.

4. What kind of business is good to open a store?

Doing e-commerce and opening an online supermarket is equivalent to starting a business at home

5. Are sea cucumbers expensive? My parents said that when they were young, they often picked up a lot of them in the sea and threw them away. No one here wants to eat them o(╯□╰)o

At present, the domestic sea cucumber market is like the domestic real estate market. In fact, their real value is not that high. In addition to a certain cost price, a large part of it is hyped up~~~

If your parents are around 50 years old now, then what they said is not wrong, because in our country, there were no wild sea cucumbers in the late 1970s, so when they were young, the sea cucumbers they picked up were all real wild sea cucumbers, and in their era, the level of knowledge about sea cucumbers was far less than it is now. To put it bluntly, they basically didn’t know what sea cucumbers were used for at that time, so the price of sea cucumbers was very cheap at that time. With the development of science and technology, people’s awareness and cognition of sea cucumbers have become higher and higher, so more people eat them, and gradually the supply exceeds the demand. Therefore, after the late 1970s, there were no wild sea cucumbers in our country, and merchants began to use farmed sea cucumbers to meet market demand. At the same time, because the cost of farming is relatively high, the price of sea cucumbers we see in the market is also very expensive.