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Effect of Air flow on Pig growth
The effect of air flow on pig body is mainly to affect the heat dissipation of pig body. Under general environmental conditions, as long as there is air flow, it can promote the convection and evaporation heat dissipation of the body. When the ambient temperature is lower than the suitable temperature limit of the pig, the heat dissipation of the pig is increased due to the action of air flow, which makes the pig feel cold. at this time, more energy is needed to maintain the body temperature. On the contrary, when the ambient temperature is higher than the upper limit of the suitable temperature for pigs, because the air flow contributes to the heat dissipation of pigs, and when the air flow is large, the heat dissipation is more, so the wind speed is increased.
2019-01-16 -
Culture techniques of grouper
Culture techniques of grouper
2018-09-08 -
Site selection of cage for cage culture of Pelteobagrus fulvidraco
The main results are as follows: 1) Micro-running water and waters with certain wind and waves are suitable to set up cages for large and medium-sized reservoirs, lakes, rivers and other water bodies, compared with ponds, they are characterized by certain wind waves and micro-flowing water. The location of cage culture of Pelteobagrus fulvidraco requires a certain amount of wind, waves and micro-currents.
2020-11-08 Cage aquaculture Pelteobagrus fulvidraco location selection micro running water -
Matters needing attention in ventilation of chicken house
Matters needing attention in ventilation of chicken house
2019-01-28 -
How to use cage to cultivate eel
In recent years, although the price of eel market fluctuates, eel species such as European eel with rich resources and low price are selected for marine cage culture, the prospect is still good, and the economic benefit is also very considerable. Water quality environment: open water surface, good water quality,
2020-11-08 How to use cage culture eel in recent years though -
Culture techniques and matters needing attention of eels with serpentine appearance
Eel refers to the general name of species that belong to the classification of eels. Also known as eel, is a kind of fish similar to the appearance of a long snake, with the basic characteristics of fish. In addition, eel is similar to salmon in migratory characteristics. The eel is a fish of the genus Eel, resembling a snake but scaleless and generally salty.
2020-11-11 Appearance similar snake shape eel culture technology and eel -
Cage cultivation techniques of Pseudosciaena Crocea fingerling
First, the setting of the cage 1. The flow velocity of the selected sea area is generally less than 1 m / s, and the flow direction is straight and stable, avoiding being set in the sea area with migratory cyclone. At low tide, the bottom of the box should be more than 1.5 meters from the bottom of the sea. The surface water temperature of the sea area is 7: 30 ℃, the salinity is 12: 32, and the transparency is between 0.2 and 3.0 meters. two。 Selection of cage specifications at present, the cages for cultivating Pseudosciaena Crocea fingerlings are all floating cages, that is, the cages are suspended in 10 wooden frames of 5 meters × 5 meters.
2019-01-15 -
Five skills not to be missed in the cultivation of mimosa
Five skills not to be missed in the cultivation of mimosa
2019-03-07 -
How long is the life span of herring?
How long is the life span of herring?
2018-09-08 -
There is less rainfall in the upper reaches of the Yellow River.
There is less rainfall in the upper reaches of the Yellow River.
2019-02-21 -
Tips on watering indoor flowers
Tips on watering indoor flowers
2020-03-31 -
African swine fever infection rate in the same field
Do you know the speed of African swine fever infection? In fact, this problem is the key point we need to understand, which is very important for prevention. Let's take a look together today! I. African swine fever infection rate in the same field African swine fever infection rate in the same field
2020-11-11 African swine fever co-occurrence infection velocity -
The three Gorges opens the sluice gate for fish breeding for the first time.
The three Gorges opens the sluice gate for fish breeding for the first time.
2019-02-22 -
Wuxi peach producing area
Wuxi peach is also known as Yangshan peach. Yangshan peach is produced in the western suburbs of Wuxi on the shore of Taihu Lake in the south of the Yangtze River. Facing the beautiful Taihu Lake in the south and the Beijing-Hangzhou Grand Canal in the north, Xinchang Railway and Xi-Yi Expressway pass through the border, with superior geographical location and convenient land and water transportation.
2020-11-09 Wuxi peach origin also known as Yangshan. -
Why is the mimosa shy? The secret of mimosa was revealed.
Why is the mimosa shy? The secret of mimosa was revealed.
2019-03-09 -
Is the mimosa poisonous?
Is the mimosa poisonous?
2019-02-26 -
Experience of placing cages in flat-bottomed river with fish culture
The water depth of the Pingdi River is more than 2.5 meters, and the water level changes little all the year round, so it is good to raise fish in cages. 1) generally speaking, the height from the bottom of the net to the bottom of the water is 50 cm. There is a gap between the bottom of the net and the bottom of the water to facilitate the flow of water, on the one hand, to increase oxygen, and on the other hand, to exchange water.
2020-11-08 Fish culture flat bottom river course cage placement experience flat bottom river -
When is the fattest sea crab? Can you eat when you're dead?
Sea crab is one of the crabs, which is very popular because of its delicious meat and rich nutritional value. the most important thing is that it can not only be steamed, but also fried. When is the sea crab the fattest? Can you eat when you're dead? When is the fattest? Generally speaking,
2020-11-11 Sea crab when the fattest dead but also can eat Mo the sea -
Freezing Technology of Frozen Rabbits
1. At present, frozen rabbit processing in China is mostly mechanized or semi-mechanized, and its technological level and sanitary standards have reached international standards. Freezing processing room mainly includes cooling room, refrigerating room and freezing room. The meat cooling room should also be located on the top floor so as to connect with the slaughtering room, which is in turn the refrigerator room and freezing room, while the freezing room should be located on the ground floor so as to be directly shipped or temporarily stored in other processing rooms.
2019-01-16 -
Key points of breeding parent fish in spring
After the beginning of spring, the water temperature gradually increased, especially in the prenatal stage from March to April, the fish activity strengthened, developed rapidly, and the food intake also increased. This stage is an important period of gonadal development of parent fish. Practice has proved that the cultivation of parent fish in spring is the key to the success or failure of artificial reproduction of domestic fish. therefore, we must grasp the following points. First, bait grass parent fish are mainly fed with grass and concentrate. According to the source of grass, the grass should be fed on a fixed table in the morning and concentrate in the afternoon, when there is a lack of green fodder in early spring.
2019-01-15