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Lushui, also known as "southern water," refers to food leftovers collected from hotels, restaurants, schools, and factories. Due to its low cost and high nutritional value, it is an excellent feed for ducks. When treated with the Golden Baby Starter, harmful bacteria in the waste water are eliminated, and the nutritional content of the
Material is significantly enhanced. This improves the absorption rate by animals, making it highly suitable for duck feeding after proper microbial treatment.
1. **Fermentation Process**
The collected Lushui, mainly consisting of rice (over 50%), is placed into a container. For every 500 kg of Lushui, add 50 kg of corn (if not rice-based), or over 70 kg of rice without corn. Add 30 kg of soybean meal or alternatives like rapeseed meal, cottonseed meal, or peanut bran. Then mix in 50–150 kg of rice bran or reconstituted rice bran. The moisture level should be such that when you squeeze the mixture, a little water drips out — similar to using straw powder like peanut husk or shell powder. Additionally, add 5 kg of calcium hydrogen phosphate or superphosphate. Fill the container completely to minimize air exposure, which helps maintain an anaerobic environment and prevents harmful bacteria growth. Cover with plastic film and secure it with a rubber rope, leaving a small opening for gas release to avoid explosion due to pressure buildup. Fermentation usually takes 1–3 days in summer, 3–4 days in spring and autumn, and 4–7 days in winter. Initially, bubbles appear, indicating active fermentation. Later, the pH increases, and a mild koji-like aroma develops.
When feeding ducks, add 25 g of vitamins per 100 kg of fermented material to prevent vitamin deficiencies and support healthy growth.
**Precautions**: There's no need to remove hard objects like toothpicks, fish bones, glass, or plastic bags before fermentation. However, they should be removed before feeding to avoid intestinal damage in ducks. Bones and raw meat can remain and ferment naturally. Fermented materials must include both plant and animal-based components, such as rice or porridge, to support microbial activity. Pure hot pot waste may not ferment properly without added energy sources like rice or corn.
**Fermentation Benefits**: Using the Golden Baby Starter ensures hydrophobic protein levels around 18%. Adding calcium dihydrogen phosphate enhances fermentation and addresses phosphorus and calcium deficiencies. It also breaks down crude fiber in rice bran, straw, and reed mill, reducing acidity and alcohol content while increasing sugar levels, improving palatability. Adding vitamins during use ensures balanced nutrition.
Lushui can be fermented together with distillers' grains, cassava residue, etc., at a 1:1 ratio. The same method applies, and results have proven effective.
2. **Storage of Fermented Material**
Once fermented, store the material in sealed containers. With good sealing, it can last up to six months without degrading. After each feeding, clean and disinfect the fermentation tank immediately. Similarly, ensure the fermentation area is cleaned and disinfected after each batch to prevent bacterial growth.
3. **Application on Ducks**
A sample duck mash formula can combine local resources like wheat bran, rice bran, wheat flour, sorghum flour, hay powder, green fodder, peanut bran, vegetable oil cake, sunflower meal, sesame cake, limestone, meat meal, and bone meal. These can replace or supplement ingredients in standard formulas. For example, local protein sources can substitute for commercial ones, but attention must be paid to maintaining a balanced protein profile. Users with access to data should consider adding 0.05% methionine to broiler diets.
**Notes**: Start with small quantities, gradually increasing from 10% to 100%. Always mix the fermented material for at least 30 minutes before feeding to allow excess gases to escape.
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