The "barrel" fermentation bed hazard

The "barrel" fermentation bed hazard

The "barrel" fermentation bed hazard

First, what is the "water bucket" fermentation bed

The so-called “barrel type” fermentation bed is an image of a type of fermentation bed with very irregular structure, especially poor ventilation and ventilation conditions. It has the following characteristics: 1 The window is high and small, and it is more than 1.5 meters above the ground. And very small about 1 square meters; 2 no floor-to-ceiling windows; 3 cement or brick wall partitions, all around the pens are cement-style brick walls; 4 underground, the depth of the pens increased; Land, very poor permeability; 6 low-lying, high groundwater level (digging one meter to see the water); 7 no fan; 8 does not overturn, do not maintain the fermentation bed. These are the typical characteristics of the bucket, so they are called "water bucket" fermentation beds.

Second, the "water bucket" fermentation bed hazards

The “barrel type” fermentation bed is very low-lying and underground. It is very prone to bad bed phenomena such as blisters and mud beds. In addition, the window and structural design are very unreasonable. The oxygen content in the air in the housing is relatively Falling, increased turbidity, and degraded air quality are like an "exhaust collection concentrator." In particular, the heat-insulated pig houses that are closed in winter cannot be maintained and managed. If the concentration of harmful gases is too high, it will not only seriously harm the health of livestock and poultry, but also reduce the disease resistance of livestock and poultry, hinder the production performance, and endanger people. In particular, the health of livestock keepers, their concentrated release into the atmosphere may also cause acid rain, causing pollution to the environment.

Livestock and poultry urine is the most numerous and most harmful source of livestock waste. The number and types of pollutants contained in this category are particularly large. According to statistics, there are more than 200 kinds of organic odorous substances such as hydrogen sulfide, ammonia, alcohols, and methane. In the livestock houses, the most harmful gases that produce the most harm are carbon dioxide and ammonia. Hydrogen sulfide, carbon monoxide, malodorous substances, and other major hazards to animals living in this environment include:

1 Eye: Ammonia is a colorless, irritating gas that stimulates the external mucosa of the animal, causing mucosal congestion and laryngeal edema. Hydrogen sulfide produces a strong irritant effect on the eyes and respiratory mucosa. Conjunctivitis and corneal ulceration can occur in the eye.

2 Breathing: Pigs breathe in the air with 4% carbon dioxide and coma at 10%. Ammonia can enter the respiratory tract and cause symptoms such as cough, bronchitis and bronchitis, pulmonary edema, difficulty breathing, and suffocation. Hydrogen sulfide can cause bronchitis in the respiratory tract and can even cause toxic pneumonia and pulmonary edema.

3 immunity: the concentration of carbon dioxide in the house is too high, which means that the oxygen content is relatively insufficient, it will make pigs appear chronic hypoxia, clinical manifestations of apathetic, loss of appetite, productivity decline, physical weakness, susceptible to chronic infectious diseases. When the ammonia concentration reaches 10-15 μl/l, the animal's resistance will be significantly reduced. In the l00-150 μl/l ammonia concentration, the growth efficiency is reduced by 30%.

4 growth performance: performance in feed intake decreased, less weight gain, weight loss, such as a small amount of inhaled NH3 will reduce the body's constitution, reduce feed intake and daily gain, feeding pigs in the 50ppm air weight gain rate decreased by 12%. When the hydrogen sulfide concentration reaches 0.002%, the pig's appetite will be affected.

5 Poisoning: high concentrations of ammonia can directly stimulate body tissue, so that tissue dissolution, necrosis, but also cause central nervous system paralysis, toxic liver disease, myocardial damage. Carbon monoxide is a poison that is harmful to blood and nerves.

6 Death: In the long-term effect of low concentration of hydrogen sulfide, livestock will have autonomic dysfunction or occasional multiple neuritis, physical weakness, weight loss, decreased resistance to disease, prone to gastroenteritis, heart weakness, etc., productivity reduce. The content of hydrogen sulfide in the air in the house must not exceed 10 mg/m3. High concentrations of hydrogen sulfide can paralyze the respiratory center of the carcass and suffocate.

Third, how to improve the "water bucket" fermentation bed

The "barrel type" fermentation bed is not only prone to the phenomenon of bad bed in the fermentation bed, but also seriously affects the growth and health of the animals, and even causes great economic losses. Even if the fermentation bed is not used, the pig should be made to use pigs. Growing in a good environment, such as the "four-window complete" and the requirement for ventilation of the Jinbao fermentation bed are the technical solutions proposed for these problems. Therefore, the following improvement measures are formulated according to the characteristics of the "water bucket" fermentation bed. Make the animals grow healthily and maximize the economic and environmental effects of the fermentation bed.

1 Modification of windows: normal normal windows are recommended to be about 1m high from the ground, with an area of ​​1.21.5m2. The ground windows suggest that there should be at least one single-circle house with 20 square meters each, and there should be multiple places with larger single-circle area. Window, goldfish fermentation bed recommended the best height fermentation bed 20 cm high;

2 Renovation around the house: Change the cement or brick wall partition to an iron fence type to facilitate ventilation, strengthen the flow of air, avoid stagnant air retention, and use wooden fences to reduce costs;

3 According to the local water level, reasonably design ground or underground type, if the water level is high, the terrain is low, the ground type is adopted, and anti-seepage measures are taken, and the ditches should be dug as far as possible, for example, more than 1 meter, to facilitate drainage.

4 According to the weather conditions, in order to enhance ventilation, install electric fans or induced draft fans and use mechanical power to force convection.

5 Strengthen the maintenance and management of the fermentation bed. For example, Golden Baby recommends that customers turn in time according to the humidity of the fermentation bed and shake it once or twice a week.

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