Pigs try to save energy and reduce emissions

The amount of resources and energy used for raising pigs is very large. Today, in vigorously advocating the construction of a conservation-minded society, in the face of a high cost of aquaculture and an increasingly profitable market, the promotion of conservation-oriented pig farming has become the future direction of development. Several ways to save energy and reduce emissions, pig farmers may wish to try.

1. Plant grass pigs to save fine material. In China, the feeds for intensive pigs are currently using the “corn + premix” approach. Although this kind of diet is simple in configuration, reasonable in nutrition, and relatively low in meat, it needs a lot of corn and soybean meal. In some places, some green feedstuffs have been tried instead of concentrates for pigs, such as American chicory, pine vanilla, and wolfberry, which are economically beneficial. According to Professor Wang Chengzhang of the College of Animal Husbandry and Engineering of Henan Agricultural University, 10%-20% of sow feed, and 5%-15% of alfalfa meal added to grow-finish pig feed significantly reduce the cost of feed while the performance of live pig Significant improvement: Increase the number of litters in the sow litter by 0.5-1, and the fattening pigs have better health and faster weight gain.

2. Reform pigsty design to reduce costs. The ventilation and warmth of the pig house are a contradiction. In winter, some pig farms put too much emphasis on keeping warm, resulting in deterioration of the air quality in the homes. Excessive amounts of toxic and harmful gases such as carbon dioxide, carbon monoxide, and ammonia exceeded the standards, and the sterility of the air after the keeper entered Glare, respiratory diseases such as sows and piglets coughing are frequent. At the same time, due to the increase in humidity, germs are prone to reproduce under conditions of high temperature and high humidity, resulting in piglets prone to diarrhea and other diseases. The new plan for reforming pig homes is to distinguish between finishing pigs and piglet incubators. The temperature of the nursing sow in the pig house can be appropriately reduced, generally between 16° C. and 18° C.; the temperature in the incubator is maintained at 30° C.-32° C., and decreases as the age of the piglet increases in the future; the temperature of the nursery is only 20° C.-24° C. Therefore, ceilings and adjustable roof ventilation should be used in the delivery room, nursery boxes should be set up on the nursing posts, and infrared or electric heating pads be used for heating.

3. Reform the piggery sewage treatment technology program. The manure, urine and sewage treatment of intensive pig farms adopt the dry manure method, that is, artificial manure is used. The manure and urine are separated in the pig house first, and the excrement is transported to the waste manure by hand cart, and the piggery is processed and treated. The ground uses indoor shallow sewage ditch to reduce flushing the ground water. Although this program increases the labor cost, it overcomes the shortcomings of the water flushing manure method. The daily water consumption on the farm can be greatly reduced and the discharged sewage can be handled more easily. At the same time, the quality of organic fertilizers produced by this method is higher. The income of organic fertilizers is basically equivalent to paying the wages of excrement workers, and the investment in waste water pools is small, the floor space is small, and the daily maintenance costs are low. Another important aspect in the design of pig houses is to separate the sewers from the storm waterways, which can greatly reduce the amount of sewage discharged.

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