It is very important to keep pigs cold and keep warm in winter.

Raising pigs

Temperature is the driving force for the growth and development of all things. The temperature drops obviously in winter, and pigs are easy to get sick under the influence of cold stimulation, which affects the normal growth. if we can take effective methods to prevent cold and increase temperature scientifically, it can not only promote the health and fattening of pigs, but also reduce the occurrence of various respiratory and intestinal diseases. Increase the income of pig farmers. This paper introduces several common heat preservation methods.

1. Renovate the pig house

The piggery should be located in a high, dry and sunny place, fortress the windows and holes on the north, west and east sides, inspect and repair the cracks in the roof and four walls in time, the windows and vents of the piggery should be 1-1.5 meters away from the ground, and the size of the hole can be adjusted to keep the temperature relatively stable.

Second, hang the windscreen

Before winter, the whole doors and windows of the piggery are covered with plastic sheeting to keep warm and keep out the cold. In the upwind direction of the pig house, use straw or corn stalk to build a wind barrier or stack to block the wind to prevent the wind from invading the pig house.

Third, build a house in a house

To build a house in an enclosure, plastic film and blankets can be used. The plastic film can transmit light and heat preservation, the felt can permeate and accumulate the temperature, and the temperature can be increased by 5 ~ 7 ℃. The building house has the characteristics of low investment, simple production, quick effect and so on. The construction of the house should be in accordance with local conditions, according to bad conditions, can be built in the form of a ceiling about 1.8 meters high, while leaving a ventilation window above, timely ventilation.

Fourth, increase the cushion material

Add 15-20 cm thick sawdust, rice husk and hay on the pig bed to absorb moisture and remove moisture in addition to heat preservation. Pay attention to check and update the wet hay frequently, and find that pig urine should be replaced with hay in time to keep the pigsty dry and comfortable. When the weather is fine at noon, spray peracetic acid or add quicklime under the cushion to remove ammonia and moisture, and properly separate the junction of the house to remove ammonia and moisture in the house.

Fifth, add bed board

In the piggy stage, where there are conditions, it is best to use warm bed boards such as wood, bamboo and thickened fibreboard, and there are no conditions for laying cement precast boards.

VI. Increase the daylighting area of piggery

When the piggery is first built, the daylighting area of the piggery should be considered. The open pig house should have a larger open area in case it is covered with plastic film in winter to facilitate daylighting. The enclosed piggery should reserve windows on the south wall and roof for the installation of glass in winter.

7. Increase the density of feeding

If the scattered pigs are raised in groups, the number of pigs raised in the house can be increased by 3050% compared with that in summer, and the temperature of the house can be increased by using the body temperature between the pigs. Note that the piggery should be carried out when it is dark, spray the pig behind with wine or low concentration of Lysol water and then join the group, and the breeder needs to observe for several hours to prevent the pig from fighting. You can also choose to drive the pig out to bask in the sun on a sunny day to strengthen exercise and improve the pig's resistance to cold weather.

Provide high quality ingredients

In the preparation of pig diets, energy feeds such as sorghum and corn should be appropriately increased or high-quality full-price feed produced by regular manufacturers should be selected. Some farmers like to feed the feed after fermentation, but must let pigs drink warm water, can increase the number of feeding, every night around midnight plus a night food, in order to enhance the cold and disease resistance of pigs, promote the rapid growth of pigs. Traditional Chinese medicine such as activating blood circulation and removing stasis, invigorating spleen, dispelling wind and dispelling cold can also be added to the feed, which can not only promote the rapid fattening of pigs, but also prevent cold and disease. Prescription can use Chuanxiong, Poria, Schizonepeta tenuifolia, Fangfeng, Fructus Aurantii, Notopterygium, Bupleurum, Hawthorn, Atractylodes, betel nut, Shenqu, licorice each 20 grams. Stir-fry 30 grams of malt, mix it with 0.2% to 0.5% of the feed and feed it 2 times a week.

Raising pigs

To ensure the safety of pigs through the winter, we should also pay attention to the following eight situations:

Guard against wind attack

Winter pig houses must block the wind tunnel, hang grass curtains and paste windows to prevent rat holes, cracks, gaps, broken tops and other tuyere blowing into the wind. Ventilation holes can be left at least 1 meter above the ground.

Moistureproof

Pigsty drying is one of the main measures to ensure the health of pigs. Air is a kind of heat conducting material, and the wetter it is, the stronger its thermal conductivity is. The pig body is cold, crush injury and even death, epidemic disease is also easy to occur. Therefore, the ring should be padded frequently to ensure dryness, and pay attention to training pigs to defecate and urinate at a fixed point, with a dry lying place.

Anti-low temperature

The optimum temperature for pig growth is 15 ℃ ~ 25 ℃. The temperature of normal growth should generally be above 8 ℃, in order to ensure the normal growth and development of pigs, the best way is to use a warm shed, that is, to cover the roof with a thicker plastic film, covering a slope of about 30 degrees to facilitate daylighting, the circle temperature is too high at noon to vent and ventilate, and it should be cleared in time after snowing.

Prevent cold food

In winter, pigs eat nothing more than to keep out the cold and gain weight, while sows want to ensure the normal growth and development of their fetuses, so it is necessary to increase energy feed appropriately when blending. Increase its ability to keep out the cold. When mixed with feed, it is best to feed raw food and dry feed, and the water temperature should be about 25 ℃ when a small amount of water is needed. If you adopt the method of balance feeding, the drinks should be warm and hot, and should be added less frequently to prevent cold and frost.

Anti-chaos feed

In order to feed pigs, the feeding quality and feeding time should be stable, the ingredients should be carried out according to different production performance and different growth stages, and the quality should not change. If there is a change of feed, the amount and feeding should be changed gradually.

Anti-cold drink

Pigs have a great demand for water, and the demand for water is very important. If there is no water in the circle, the pig will eat snow and ice; drink urine, which is bound to cause digestive tract diseases or other diseases. Therefore, it is necessary to constantly provide warm and clean drinking water to prevent both patients and pigs.

Bite-proof frame

The normal growth of pigs, feeding must be comprehensive nutrition, the lack of some or several ingredients, not only slow growth, but also may appear bite "addiction", especially the lack of green feed in winter, "addiction" is more likely to appear. Therefore, in the feed to supply a variety of vitamins, minerals and trace elements, and strong and weak groups, size sub-circle; timely castration.

Prevention of epidemic disease

Due to the low temperature and dry air in winter, digestive tract diseases, respiratory diseases and infectious diseases of pigs are very easy to occur. in order to develop healthily, pig production must always keep the pigsty clean, clean and hygiene. regularly and irregularly carry out pen brushing and disinfection or spray disinfection, pigs should be vaccinated, and commonly used drugs should be available to ensure early isolation and early treatment of diseases.