Silage using plastic bags is an effective method to address the shortage of feed during off-seasons, ensuring a steady supply of fresh green feed for livestock and poultry. This technique is simple, cost-effective, and highly practical for farmers.
1. **Plastic Bag Production**: To begin, use non-toxic polyethylene film with a thickness of at least 0.08 mm. Thin films are prone to tearing and unsuitable for long-term storage. Create a bag measuring 1.2 meters in length and 0.8 meters in width. Ensure the seams are tightly sealed, strong, and durable to prevent air leakage.
2. **Timely Harvesting of Green Fodder**: Legumes should be harvested at the early flowering stage, while grasses are best collected at the heading stage. Tuber plants are ideal when they are lush and fully developed. After harvesting, the feed must be processed immediately. Clean the green fodder thoroughly and disinfect if necessary. Cut it into small pieces, approximately 1 cm in length, and prepare for silage. The raw materials should remain fresh to avoid spoilage. The moisture content should be around 60%. If the feed is too dry, add water or mix it with more moist green feed. For overly wet feed, dry it slightly or blend with drier material to achieve the right balance.
3. **Bagging and Sealing**: Place the chopped green fodder into the plastic bag. Start by filling the bottom corners with a small amount of feed, then layer the rest, pressing each layer firmly to remove air. Be careful not to apply excessive pressure that could crush the bag. When the bag is about 80% full, tie the mouth tightly with a rope to ensure an airtight seal. It's important to combine legume-based feed, which is high in protein, with grass-based feed, which is rich in sugar, to enhance the nutritional value. Store the filled bags in a dry and well-ventilated area. Regularly check for any damage caused by animals or pests. If the bag is punctured, repair it with tape. In case of severe damage, replace the bag and re-store the feed.
4. **Using the Silage Feed**: After about 20 days of fermentation, the silage is ready for use. Open the plastic bag and assess the quality by sight and smell. Good silage has a sour odor, a yellowish-green color, and a firm texture with intact stems and leaves. If it smells foul, appears black or brown, or looks slimy, it has spoiled and should not be fed to animals. Properly fermented silage can be used for cattle, sheep, horses, and even poultry in moderate amounts. Adult sheep can consume about 1 kg per day, cattle around 15 kg, and horses up to 8 kg. However, pregnant animals should not be given silage to avoid the risk of abortion. Frozen silage must be thawed before feeding.
road roller, also known as a compaction, is a kind of equipment for building roads.
Road roller belongs to the category of road equipment in construction machinery, widely used in high-grade highways, railways, airport runways, dams, stadiums and other large-scale engineering projects fill compaction operations, can roll sandy, semi-cohesive and cohesive soil, subgrade stabilized soil and asphalt concrete pavement layer, roller with the gravity of the machine itself, suitable for all kinds of compaction operations, so that the rolled layer produces permanent deformation and compacting.