1. Introduction to red catfish

Red catfish is also known as golden catfish or grass goldfish, which is similar to the Japanese koi. It is a variety formed by the mutation of red and yellow catfish during artificial breeding. It is the oldest variety of goldfish.Its color is fiery red, red and white.Because red catfish breeding conditions are simple, the feeding cost is low, the omnivorous, and the growth is fast. Therefore, it can be used for self -training for beginners for breeding technology. Therefore, he is a very popular species. It is mainly distributed in Asia and has strong survivability.

2. morphological characteristics

Red catfish, the body is spindle -shaped, the tail fin does not split, the back, abdomen, chest, and anal fins are normal.Strong physical fitness, strong adaptability, wide food properties, and easy to raise.In addition to red, there are red and white flowers, five flowers, etc.Suitable for large -scale feeding in parks and natural waters, and can also be kept in the courtyard tank pool and aquarium.

3. Life habits

1. Breeding

The red catfish is the same as brocade carp, and the reproduction period of red catfish is in3arrive8Month, always after rain

Smooth in the overgrown lake.The growth rate of red catfish is slightly slower, and the weight in the first year is50Right or so, the next year's weight100arrive200A little around, weight in the third year250to300Right.

2. Feeding management

(1) Change water

Changing water frequently can increase oxygen, but you cannot use tap water for changing water, because tap water contains chlorine, and red catfish will die within a few hours when you encounter chlorine.You can use mountain springs, lakes, and streams.

(2) Feeding

Water flea: Also known as fish insects or red worms, brown, reddish brown, green, etc., live in places with many water plants, but it is best to feed at one time.

Water earthworms: It is called red thread bug, and the water earthworm looks like an earthworm. Because the water earthworm lives in the mud, when the water earthworms are fed with red catfish, they must be rinsed repeatedly.Otherwise, red catfish will be sick.

(3) Light

Because the sun can sterilize, it is best to put red catfish in the sun for an hour or two to prevent disease prevention.And the color will be more vivid and beautiful.

(4) Distribution range

Red catfish lives in Asia and usually inhabits ponds. It is very adaptable, and even turbid water can be seen.In order to get food better, catfish choose to move and forage in lighter waters, especially the aquatic plant bushes, and it is the concentration of catfish.It is mainly eaten with algae, mullet, and small fish and small shrimp.

(5) Pond

Red catfish is an artificially selected catfish variety with a wide market prospect.Below we will introduce the pond main raising red pupa technology to you:

(6) Pond conditions

The pond with a cowein, the area of the pond mouth is generally required5-8Acres, Chi Shen2.8-3.0Mi, pool wall slope1: 2.5-3.0, Effective water storage depth2-2.5rice.High -yield refined ponds need to be equipped with oxygen -breaking machinery, and the power is1.5kilowatt/3-5mu.

(7) fish species and release

Before the fish species is released, the selected pond should be cleared to kill the pathogen and enemy creatures.In order to improve the survival rate and listing specifications, fish seeds should be promoted.The release density is generally per kilogram30-50Put the fish species of the tail per acre1000-1500Tail, another with , (4: 1) spring film fish species, put in each acre250-300tail.When the fish species is released, use it3%Salt water and salt water1010-6Potassium permanganate solution with concentration10-15minute.

(8) bait feed

The content of the protein content of the bait of the bait is30%The above, daily feeding rate:4-5Month1-1.5%,,6-8Month2.5-6%,,9-10Month2-1.5%,in,6-8You can feed some blue green feed in the month.The bait should be fixed at a fixed -point, and each pond can be set up.3-5indivual.Daily bait1-2Second, the specific feeding amount is flexible according to the weather and the actual food of the fish, generally2It is advisable to be slightly left before feeding.

(9) Tube water prevention

In the production season, regularly add and change the new water to the growth of red pins.General summer every summer10-15Tianjia Note Xinshui1Second-rate.The amount of new water is changed at a time20-50centimeter.When changing the water, take the first drain and then enter, that is, drain the water from the bottom of the pond, then add water to the pond surface.At the same time, insist on booting normally at noon on sunny days1-2Hour.In addition10-15Sittrus sprinkler sprinkle strong chlorine essence1Second; medication concentration is0.210-6-0.310-6EssenceAdd drugs and other drugs in the feed season to the feed seasons, and the dose is daily1000Kilogram fish medication100Grace, monthly1-2Second, use each time3-5God can effectively prevent outbreak diseases such as enteritis and hemorrhage.

[Refrigeration Box] The functional characteristics of the category of refrigerated boxes and use drug refrigerated boxes and blood refrigerated boxes

What are the types of refrigerated boxes in my country?

1) Portable refrigerator: It is mainly suitable for short -distance transportation of a small amount of medicine/blood/vaccine/reagent/specimen.For example, the township health officer is applicable to the grassroots, and the short -distance transportation of a small amount of blood/specimen between the Hospital and the Hospital.The main size of the portable refrigerator is usually 3L in the refrigerator box, 5L of refrigerated box, 6L of refrigerated boxes, refrigerated box 8L (QB0408), and refrigerated box 12L (QB7003).

2) Specimen receiving package: It is mainly suitable for testing centers, universities, scientific research institutions, etc.Suitable for Outdoor work such as samples and samples.The main feature of the specimen receiving package is that it is relatively stable, not easy to shake, the bag is relatively strong, and it is also very light. It is suitable for the use of temperature recorder and embedded thermometer.At present, our company has provided multiple styles for major research institutions, universities, and testing centers across the country.

3) Large -volume refrigerated box: It is mainly suitable for short -distance transportation of low -temperature refrigerated products such as drugs/reagents/vaccines/specimens/seafood.If the vaccine/medicine/reagent is transported out of the cold storage, it is distributed to the dealers/Hospital/blood station/pharmacy.Qi Bing Da Rong accumulate refrigerated boxes Special internal and external seals to ensure that air conditioning is not lost.At present, our company can customize various specifications of large -scale refrigerated boxes such as tie rod refrigerator 25L, refrigerated box 30L, refrigerated box 40L, refrigerated box 60L, refrigerated box 80L, refrigerated box 100L, etc.

Classification and use of refrigerated boxes

The drug preservation box is a professional equipment for refrigerated drugs in the medical industry and can also be used to store biological products.It is suitable for pharmacy, pharmaceutical factories, hospitals, disease prevention and control centers, and health centers.

Pharmaceutical refrigerated box function characteristics:

Wing -type evaporator to improve the speed of cooling;

Humanized design, reliable and convenient temperature control;

Micro -computer control, digital temperature display, adjustment increase to 0.1 C;

The air -cooled system, the temperature fluctuation range of the box in the box is 2 C, the set temperature can be controlled at 2 ~ 8 C by adjusting the setting temperature;

Built -in circular fan, ultra -mute design;

Double -layer hollow glass insulation design;

The professional refrigerated equipment of the blood refrigerated box medical industry can also be used for refrigerated drugs, biological products, and is suitable for heavy blood stations, hospitals and epidemic prevention stations.

Blood refrigerated box function characteristics:

Temperature control

Accurate microcomputer control system, the temperature in the box is constant controlled in the range of 4 ;

Digital temperature display, the average temperature display accuracy is 0.1 C and the resolution is 0.1 C, which is convenient to accurately observe the temperature in the monitoring box;

Intelligent control fan forced air conditioning system to ensure the internal temperature of the box;

Ultra -mute design, solve the troubles brought by noise;

Safety system

Double display Running parameters (digital display), real -time monitoring to ensure the safety and qualitative equipment;

Built -in battery, continuously displaying the temperature and sound and light alarm for 24 hours after power off;

Dual system power disconnection record temperature data, (optional number display record);

Fluorofluor refrigerant Hard polyurethane insulation; insulation;

Unique power -off memory function, large amount of information, high time to save temperature data;

Special -designed sensor failure and digital disorders: two types of safe automatic transportation strokes (select electronic temperature recorder, real -time monitoring, with USB interface or optional printer).

Full transparent program

The application of external door anti -condensation technology, 85 % humidity has no gel, ensuring the observation of the in -box conditions;

Transparent hollow tempered glass door;

Double -layer hollow glass thermal insulation design of electric heating and dew glass door design;

Pharmaceutical refrigeration boxes and blood refrigerated boxes can be used for regular storage of products in laboratories such as medical clinical, life sciences, pharmaceutical companies, biotechnology, etc., and are suitable for medical institutions, pharmaceutical factories, biological product manufacturers, research institutions, etc.

[Homemade Barbecue oven] Teach you how to make your own Barbecue oven homemade Barbecue oven

Homemade Barbecue ovenMethod one

1. Prepare materials

1 aluminum barrel of about 30 gallons

2 50 cm metal barbecue racks

1 metal barbecue thermometer

4 60 cm stainless steel penetration poles

1 metal water basin

1 electric drill and 3/8 inch drill bit

2. Production steps

1. Drilling hole

60 cm above the bottom of the barrel, drill four cavities of equivalence of equivalence; there are also four holes on the barrel lid, which are used as air circulation.Next, drill four eyes 30 cm from the bottom. If the length of the barrel is regarded as a watch, the two of them are at a position of 1 and 5 o'clock, and the other two eyes are at 7 o'clock at 7 o'clock.And 11 o'clock.Next, rose 20 cm in the horizontal position of these four eyes, and drill four eyes in the same way.What is made is a three -layer Barbecue oven: the following layer is used to put coal and charcoal, the middle layer of water is placed, and the top layer is put on the top layer.Finally, drill a hole in the middle of the barrel for insertion and placement of thermometer.

2. Smooth barbecue rack

Til the first barbecue rack into the barrel. Next, put the two stainless steel rods in the four holes of the second layer, and then put the metal water basin on it.The water basin can not only increase the water in the barbecue stove, but also catch the oil falling above.Then, the remaining two rods are interspersed from the upper four eyes, and then put the last layer of barbecue rack.

3. Observation temperature

Insert the thermometer in the eyes in the middle of the barrel.The ideal temperature is generally 200 to 300 degrees, so the control of temperature is very important."The faster the air flows, the higher the temperature of the fire", "air circulation is very important for barbecue."Therefore, when the temperature is too high, use the plug to block the hole of the air circulation. After the temperature is reduced, the plug is pulled out.

Such a self -made Barbecue oven is very simple.There is also a very convenient Barbecue oven in the market, which is a folding Barbecue oven.

Homemade Barbecue ovenMethod two

1Material selection

Generally, it is a food -grade empty bucket. Such a barrel is not as pungent as an industrial flavor like the oil barrel, which is suitable for barbecue.You can choose a honey barrel.

2Cut the bucket

After cleaning the empty barrel, use a sandplant machine to cut a large mouth on the empty barrel((One -thirdCureThen tighten the cut side and use a hinge.Used as a barbecue lid.

3, Production bracket

Six pipes can be used, two are used to support barrels, and four are used as barbecue brackets.It should be fully considered when making.

4, Make barbecue mesh

You need to buy it from the hardware store, it is best to use stainless steel products.In this way, it will be cleaner than the price when using it.Below the mesh shelf is the place where the charcoal block is placed. At this time, you also need to leave a mesh shelf to the charcoal block in a lower position in the barrel, so as to ensure the full contact between the charcoal block and the air.

5,handle

The difference between the oil barrel barbecue and the ordinary barbecue rack is that it requires a handle to provide a flip, and it needs to be used without heat transfer, such as a wooden stick.Finally, painting a layer of high temperature on the surface of the barrel can play a decorative effect and protect the use of barbecue racks.

1. What is the knife?

The folding knife zhdo, "also known as" folding knife ", can be folded into the pocket knife in the knife handle, which is an extension of the user's arm.

The folding knife is divided into two types of long sword and waist knife.Long sword, Tibetan is called "Badang", about 1 meter long; waist knife, Tibetan is called "thorn", with a length between 10 cm and 40 cm.

The knife of the hidden knife has wood and copper, as well as iron or silver leather inlaid.Dragon, phoenixes, tigers, lions and flowers are often engraved on the scabbard.Some patterns are also dotted with precious items such as gems and agate.

Second, the name of the folding knife

The formal name of the Tibetan knife is "folding knife".Legend has it to commemorate the heroes of the hero.It is said that in the distant era, most of the herders on the grassland of Tibet had a hidden knife.But in order to maintain their power, the shepherds and the leader threatened the herdsmen.Many herdsmen were caught for refusing to hand over their hiding knives.The news passed to the hero of the hero, and in order to rescue his compatriots, he jumped into a horse and killed the shepherd and the head.The folding cloth was lost because of the widow, and the last drop of blood was flowing.In order to commemorate him, the herdsmen renamed the Tibetan knife as "Fold La Gan Clover", referred to as "folding knife".

Third, the effect of folding knife

The folding knife has four uses: production, life, self -defense, and decoration. It has a history of production for more than 1,600 years. The workmanship is particular.Most of the exquisite folding knives are from the hands of capable craftsmen.Due to the exquisite forging, delicate engraving, dazzling colors, and Tibetan, it is a colorful handle spike, forming a unique Tibetan crafts.Especially when a friend gets married or a happy baby, sending the hidden knife will make the owner particularly happy.

[Carp] Carp variety carp grows habitual habit of carp, the breeding and reproduction of carp

Carp Brief Introduction

The carp is called carp, Maozi, etc., which belongs to the family of carp.The body is flat and the abdomen is round, with a horseshoe shape, with 2 pairs.The base of the dorsal fin is long, and the dorsal fins and anal fins have a thick spine with a tough jagged.The body is golden yellow, orange -red in the tail fin.The carp usually inhabit the bottom of the rivers, lakes, reservoirs, and ponds.

Carp

(1) Wild carp: Wild carp usually has a certain breeding scale in the local area.Such as Yuanjiang carp, South China carp, Heilongjiang wild carp, Xiangjiang wild carp, Yellow River carp, etc.

(2) Artificial breeding varieties: Through the system selection of wild species (local varieties), we have Xingguo Red Carp, Polybao Red Carp, and German mirror carp selection system.Jianjian: Based on the offspring of the hybridization of the lotus carp and the Yuanjiang carp as the basic group, combined with the selection of the family system, the excellent new varieties of the hereditary traits of the interdental and female nuclear development technology.

(3) Hybrid carp: The promoted hybrid carps are mainly: rich carp, lotus and Yuan carp, three hybrid carp and hibiscus carp, and so on.

(5) Introduction of varieties: my country has introduced Soviet -scale carp, loose -scale mirror carp, German mirror carp, etc. from abroad.

Carp habit

The carp is doubtful and doubtful. Most of the time he lives on the bottom of the water. He likes to find food with arched mud, and spit out a string of air bubbles on the water surface. According to the bubbles on the water surface, you can conclude whether it is a carp, an experienced fisherman.Even the size of the fish can be determined. Although the carp is very mixed, most of the time I like food vegetarian.

Carp breeding method

(1) Environmental requirements

Koi and goldfish are not strict with water temperature and water quality. The suitable temperature range is 2 C to 30 C. C to 25 C; oxygen with sufficient demand is suitable for living in a water quality environment with slightly alkaline and low hardness.

(2) Food requirements

Koi is a omnivorous fish. Generally, it can be eaten by software animals, high -level aquatic plant fragments, benthic animals or small algae or artificial synthetic granules.

(3) fish selection

You should choose fish species with health, no injuries, no scales and other diseases.

(4) breeding density

Ordinary carp is a very adaptive fish, and koi also retains this characteristic.They can be raised anywhere in the fish tank, large to any part of the Outdoor pond, and they soon grow to 30 cm long or larger, so the traditional indoor fish tank is not as good as a circular plastic basin.Koi is cold -water fish, so the water depth of Koi in the hottest places in the summer is best half meters or deeper.

The density of the fish pond density can refer to the density table of the koi carp in the fish pond; the density of the aquarium is generally 60 cm 30 cm 15 cm.8 tails can be released; 10 tails can be released at 110 cm 30 cm 50 cm.

(5) bait feed

Koi is a omnivorous fish. It is best to feed artificially synthetic particles, bait, bean cakes, vegetable cakes, bread dandruff, fish and insects, clams, crab meat, Wuping, duckweed, etc.It is best to feed the bait regularly to avoid reaction to the fish.

Carp breeding method

(1) Eggs are the reproductive methods of most fish.The carp produces eggs to the body, embryo develops in vitro, and the embryonic development depends on the nutrients in the eggs during the development of the embryo.

(2) Estalidal fertilized eggs develop in the female reproductive tract. The development of carp mainly relies on yolk nutrition, has no nutritional relationship with the mother, or the mother's reproductive tract mainly provides water and minerals, and finally the mother -in -law produces psionic fish.Such as a peacock fish.

(3) The body of the gill fish of some gill fish has a blood circulation in the mother's blood circulation. The nutrition required for embryo development not only depends on its own egg yellow, but also depends on the mother's body.There are some protrusions on the falling egg Tube wall where the embryo development is connected to the embryo body, forming a placenta -like structure. The mother is given nutrients to the embryo through this structure.Such as Gray Star Shark.