How to feed pigs with biogas slurry?

The biogas slurry fed to pigs should be extracted from biogas digesters three months after normal gas production. Biogas slurry is extracted from the middle layer of biogas digester discharge room 2~3 hours before feeding pigs with bamboo tube water gun, and placed in ventilated place to volatilize ammonia gas, and then mixed with feed for feeding. If biogas slurry is used as drinking water, it should be diluted with water in the ratio of 1:1 to facilitate the volatilization of ammonia, and then it can be directly given to pigs for drinking. The dosage of biogas slurry should be flexibly controlled according to the size and amount of pig food. Generally, in the first week of adding biogas slurry, only 0.25 kg biogas slurry is added to each pig every week, and the dosage is increased to 0.5 kg in the second week. After pigs adapt, the dosage is gradually increased.

Technical requirements: The concentration of biogas slurry should be controlled at 1.0%~1.5%; the addition amount of biogas slurry should account for 80%~110% of the ration. The amount of biogas slurry added varies according to the size of pigs. Before 50 kg, four meals a day, the amount of biogas slurry added accounts for 80% of the diet. After 50 kg, three meals a day, the amount of biogas slurry accounts for 70%~110% of the diet. The biogas digester newly built or after large refueling must be used for three months after normal gas production before biogas slurry can be fed to pigs. Morbid biogas digesters that do not produce gas and put toxic substances are prohibited from feeding pigs.