Biogas Liquid Chicken Technology
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Biogas slurry is a nutrient-rich byproduct that contains essential trace elements like copper, iron, magnesium, manganese, and zinc. It also includes amino acids such as lysine and tryptophan, along with vitamins like cobalt acid, niacin, and riboflavin. This organic material is the result of the anaerobic digestion process in rural household biogas digesters, where organic substances such as feces, hemicellulose, crude protein, and crude fat from livestock and poultry are broken down into simpler compounds like glucose, fructose, amino acids, and fatty acids by various microorganisms. The resulting slurry is rich in nutrients, including ethanol, organic nitrogen compounds, phosphorus, potassium, and other beneficial derivatives. Additionally, it contains a diverse range of bacterial communities that reproduce rapidly and produce significant amounts of bacterial proteins during their metabolic processes, making the biogas slurry highly nutritious.
**Feeding Method**
1. When chickens reach a live weight of 0.3 kg or more, they can be fed with biogas slurry mixed with regular feed. It's important to maintain the right balance—too much slurry may cause digestive issues.
2. Fresh biogas slurry should be taken from the middle layer of the digester outlet, after removing the floating foam on top. After filtering through gauze, it should be thoroughly mixed into the chicken feed to ensure even distribution.
3. Only slurry from digesters that have been functioning properly for over three months should be used. Avoid using slurry from non-functional or sick digesters.
4. The amount of biogas slurry added to the feed should be moderate. If the ratio exceeds 1:1, it may lead to diarrhea in the chickens.
**Feeding Effect**
1. The presence of active substances such as amino acids and trace elements in biogas slurry can significantly enhance the reproductive performance of hens, improving their egg-laying capacity.
2. Hens raised with biogas slurry tend to start laying eggs about 20 days earlier than those on a regular diet. Their laying period is extended by approximately 50 days compared to control groups, with an average laying period of 250 days. In contrast, hens fed only on conventional feed lay eggs for around 200 days, showing a 25% improvement in egg production when fed with biogas slurry.
3. Eggs from hens fed with biogas slurry weigh an average of 46.7 grams each, while eggs from hens on a regular diet weigh 39.6 grams. This represents a 17.9% increase in egg weight.
4. Chickens fed with biogas slurry reach an average weight of 1.8 kg within 10 months, whereas those not fed with biogas slurry only reach 1.4 kg. This shows a 28.75% increase in body weight.
5. Using biogas slurry in feeding can increase annual income by more than 15 yuan per hen, making it a cost-effective and sustainable option for farmers.