Biogas is a kind of high-quality gas fuel, which can be used for cooking, lighting, house heating, greenhouse insulation, baking agricultural products, biogas moth prevention, power generation, carbon dioxide fertilization of fruits and vegetables, biogas grain storage, fruit preservation and so on. Biogas fertilizer can increase production and improve soil, and biogas slurry can prevent and control pests and diseases. The application of biogas fertilizer in aquaculture, such as biogas slurry for pigs. Biogas slurry contains a variety of trace elements, amino acids and nutrients beneficial to the growth of pigs, which can promote the rapid transformation of biological energy of pigs and accelerate the accumulation of liver sugar and muscle sugar in the body, thus speeding up the growth of pigs, making them slaughter about 30 days in advance and saving about 50 kilograms of feed. The fur of each pig is shiny, firm and less sick, which reduces the cost of raising pigs and improves the economic benefits. Technical points (1). Choose a biogas digester that can normally produce gas, burn for more than one month, be unused for a long time, and the waste biogas liquid cannot be used. The pH value of biogas slurry should be neutral (PH6.5-7.5), but it should not be too acidic or too alkaline. Feed the middle biogas slurry, take out a proper amount of biogas slurry before feeding, and mix it into the feed after clarification. After the feed is mixed, let it stand for 3-5 minutes to feed in summer, and take out the biogas slurry for no more than 30 minutes. ⑵ The amount of biogas slurry is determined according to different growth stages, body weight, feed intake and feeding habits of pigs. ① Middle-aged pigs weighing 25 kg can start feeding biogas slurry. The method is as follows: after routine epidemic prevention, deworming and stomach strengthening, eat 1-2 meals, and after the appetite increases, start to add a small amount of biogas slurry to the feed for palatability training for 3-5 days, and gradually increase it to 0.3-0.5 kg per meal after adaptation. ② Pigs weighing 50- 100 kg, at this time, the bones of pigs develop rapidly, the food intake increases, and the amount of biogas slurry also increases until it reaches 1.5 kg. If a small amount of bone and fish meal are added to the feed, the proliferation will be faster. The weight of pigs reaches about 120 kg, and the economic benefit is the best. (3) Piglets weighing less than 20kg should not add biogas slurry. (3) Feed pigs with biogas slurry. The principle of adding biogas slurry to feed is that pigs will not be left after eating. In addition, according to the concentration of biogas slurry, the addition amount can be appropriately increased or decreased. ⑷. Precautions: ① Newly built or fueled biogas digesters must be used for 3 months after normal gas production, and then biogas slurry can be taken out for clarification and feeding to pigs, and each meal should be carried out 30 minutes before feeding to pigs. (2) biogas slurry in biogas digesters with abnormal gas production or no gas production and toxic substances is prohibited from being used for feeding pigs. ③ The amount of biogas slurry used to feed pigs must be relatively stable. Don't add more if pigs like it, and add less or even no if they don't like it, which will disturb the taste of pigs and is not conducive to their growth. (4) If the biogas slurry is added excessively, the growth of pigs will be negative. Therefore, when adding biogas slurry to pigs, we should observe the dynamics of pigs, especially the shape of pig manure. If pig manure is found to be loose or cake-shaped, the biogas slurry feeding should be appropriately reduced, generally 0. 1 kg each time. ⑤ Sows should stop using biogas slurry to raise pigs after weaning to prevent excessive weight gain. & lt/SPAN>。 & lt/SPAN>。 & lt/SPAN>。 & lt/SPAN>。 & lt/SPAN>。 & lt/p & gt； Biogas manure can be used to raise fish slurry, and biogas residue can be used to feed chickens. Fish such as earthworm and eel can be raised with biogas slurry to raise cattle, sheep and rabbits. Well, I'm also surprised how animals can eat, but the information I'm looking for says so. If you need information, please fill in the email.