Improve the feeding environment Before and after the winter, conduct a comprehensive inspection of the pig barn and the surrounding environment, repair the bad, dangerous, and leaking pigs in a timely manner; block the air outlets such as rat holes, cracks, gaps, and top breaks to prevent “danceâ€. The “thief wind†invades the pig body; it puts hay on the pig's ring and coats the cold circle of the pig with a plastic film.
The moisture-proof and moisture-proof pigs in the column are like to be dry and afraid of moisture. Air is a kind of heat-conducting material, and the more humid it is, the stronger its thermal conductivity is, and the faster the calories in the hog's body are distributed. When the pigs are chilled, they will crowd into each other, causing crushing or crushing, and even bite fights. The manure in the pig bar should be cleaned frequently, and pay attention to training the pigs to defecate, urinate, and have a dry place. Always change the bedding to keep the grass clean.
Adjusting the proportion of feed The feed formula for winter pigs should increase about 10% of corn and other energy feeds on the premise of stable protein content. If necessary, animal and vegetable oils can be added. Experiments have confirmed that adding 2% to 3% of animal and plant fat in the diet can increase the weight of pigs by 12% to 15%, and each kg of weight gain can save 8% to 10% of feed.
Increasing the pig density When the rearing density is high, the floor space of each pig is reduced, and when they are lying, they can warm each other. At the same time, when the breeding density is large, their body heat dissipation is also increased, which is conducive to raising the temperature inside the house. In winter, pigs generally have one-third more pigs than other seasons. Each pig covers an area of ​​about 0.6 square meters.
The long night and night meal increase feed is relative to increase feed intake. Where conditions permit, it is best to take free food. If you take the method of feeding the pig regularly, you can increase the night meal. After the trial comparison, pigs in the same litter did not gain about 40% of the weight of the pigs that did not feed on the night meal. During the day, the pigs in the nest had body licking and did not like to eat. The hair was dry, the growth was stagnant, and the survival rate was reduced; Pigs, white and red skin, strong spirits, increased food intake, can be slaughtered 1 month in advance, high economic returns.
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