Three points for attention to warm and cold-proof harmful gases for raising pigs in a greenhouse in winter

To keep warm, even on "39" days, the temperature in the shed can reach 18-20 ℃ during the day and above 0 ℃ at night, which can reduce the energy loss of pigs, speed up the weight gain of pigs, and make pigs gain weight as usual in winter. But raising pigs in a greenhouse should also pay attention to three points:

Raising pigs in a greenhouse

First, the problem of warmth: although the greenhouse can keep heat, the performance of heat preservation is poor. Due to the low temperature in winter, short sunshine, large temperature difference between inside and outside the shed, the plastic film is easy to dew and the heat preservation is not long-lasting.

Heat preservation measures: 1. At night, quilts or straw curtains are hung on the door of the enclosure to prevent the invasion of thieves. two。 Used plastic film to check for loopholes, to glue to repair the defective part, usually to protect the plastic film. 3. Cover the plastic film of the ceiling with grass grass at night to enhance the thermal insulation performance. 4. If possible, it can be covered with double-layer plastic film, which can improve the heat preservation effect. 5. Scientific management enables pigs to develop the habit of defecating and urinating at a fixed point to prevent pig urine nests from freezing. 6. Carry out high-density feeding, raise a few more pigs in each cottage, and make full use of the calories of the pigs themselves. 7. Bedding grass on the floor of the pigsty.

Second, moistureproof problem: pigs live in a sealed greenhouse, eat and live in the shed, defecate, coupled with trough water sprinkled, water is difficult to evaporate, dampness in the shed, affecting the temperature. When it is cold, the greater the humidity in the shed, the colder the pig feels.

Moistureproof measures: 1. Ventilation is carried out every day according to weather conditions, usually opening skylights and vents when the temperature is high from 10:00 to 2 p.m., 0.5 hours at a time. When the weather is fine, the ventilation is slightly longer, and the ventilation on cloudy days can be shorter. two。 If possible, install air conditioners and blowers to adjust humidity. 3. Frequent replacement of mat grass is conducive to the elimination of moisture, so that the ground is not wet, but also in the piggery pad to absorb water furnace ash, dry soil. 4. Wipe the water droplets on the film with a highly absorbent cloth in time, or connect it with a bucket and pour it out at any time to reduce the humidity in the shed. 5. The cement floor should have a certain slope to make feces and urine flow to the urine pit and be removed in time.

Third, harmful gas problems: pigs to breathe, defecate urine, and feed, mat grass fermentation to produce ammonia, hydrogen sulfide, carbon dioxide and other harmful gases, the content is too high, easy to cause pig disease and poisoning.

Measures to prevent harmful gases: 1. Open skylights and vents on time every day to release harmful gases and change fresh air. two。 Pig manure and urine is the most important source of harmful gases, which must be cleared every morning, noon and afternoon to keep the ground hygienic and dry. 3. Strengthen the management of tableware, feed pig trough, mixing trough, sink, scald regularly with boiling water, scrub clean. Make sure that there is no leftover material in each meal, and prevent the leftover material from rancidity, mildew and harmful gas. At the same time, tableware and tools should be used separately, and tableware, tools and environment should be disinfected regularly and irregularly, so as to eliminate the rotten smell of metabolites, ensure ventilation and fresh air, improve pig disease resistance and ensure the health of live pigs.