Forage fodder is needed because it contains good nutrition for growth. However, sometimes the availability of feed is not sufficient. For this reason, farmers must be able to deal with these problems. One of them is by doing green fodder preservation.
In certain seasons, the availability of feed will decrease. This causes livestock to lack food intake. So, the growth process is inhibited and can even cause disease. By preserving feed, breeders do not need to worry about it. The preserved feed can be stored for a specified period. Thus, if the availability of feed decreases, farmers can take advantage of the preserved feed reserves.
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Purpose of Green Fodder Preservation
Green fodder preservation is one part of livestock production. This preservation is intended so that the provision of forage as animal feed can occur evenly throughout the year to overcome the shortage of feed during the famine season. Therefore, farmers must carry out feed preservation.
As is known, during the rainy season, the availability of forage feed is sufficient. However, when the dry season enters, the availability begins to decrease. Apart from availability issues, feed preservation also has other purposes. Namely, feed ingredients that generally come from agricultural waste have low crude protein and high crude fiber content.
This crude fiber content will be difficult to digest by livestock, especially ruminants. Therefore, preservation is needed to make it easier for livestock to consume their feed.
How to Preserve Forage Fodder
Before talking about green fodder preservation, there is another term for the feed, namely silage. Silage is a preserved feed whose raw materials are green plants, agricultural waste, and other natural materials. Understanding the full silage fermentation process helps farmers produce higher-quality preserved feed from the very first batch.
Prepare Foraged Ingredients
The first step that must be done is to prepare forage feed ingredients. Wilt the feed material, then cut it to 5-10 cm in length. Add carbohydrates as a bacterial substrate such as bran, cornstarch, or molasses, approximately 3%. Mix evenly, then put into the silo compacted and tightly closed.
Prepare the Silo
A silo is a container that can be tightly closed and airtight. In addition to being airtight, the container must also be impermeable to liquid seepage. Usually, the silos that are often used are made of plastic. Apart from meeting the requirements of a silo, plastic is considered more economical and practical.
The size of the silo used in green fodder preservation should be adjusted to the needs. Farmers usually use plastic barrels which are considered very flexible because they are easy to lift. In addition, the use of plastic barrels can also increase the amount of silage to meet the needs.
Silage Storage and Feeding
Silage that has been put in a silo is then compacted and tightly closed for 21 to 30 days. After this time, the silage from the silo can be opened and fed to livestock. If the storage process is successful and there is no leakage, then the silage can last up to 1 year, as long as it is kept in an airtight place.
Silage with good quality has distinctive characteristics, namely:
- The smell is slightly fragrant.
- The taste is sweet and slightly sour.
- The color is yellowish-green and free of mold.
- When opened, the temperature is not hot, below 30°C.
- The texture is soft, dry to the touch, and does not clump together.
- The pH ranges from 4.0 to 4.5, indicating successful fermentation.
Silage can be used as one of the main coarse feeds for beef cattle rations. For dairy cows, feeding should be limited to no more than two-thirds of the total roughage amount. Silage is also a suitable feed for sheep. For horses, silage can be used but must meet specific quality requirements, particularly low fructan content and the absence of mold or butyrate contamination. For pigs, silage is generally not recommended as their digestive system is less suited to fermented forage.
Silage is the preferred feed for livestock, especially when the weather is hot. If cattle are not used to consuming silage, introduce it little by little, mixed with the forage they normally eat.
Applications of Silage Use
Green fodder preservation that has become silage can be directly given to livestock. Of course, by paying attention to the response of livestock first. Not all farm animals show a good response when eating silage because silage has a distinctive aroma and taste.
At the time of opening and taking silage from the silo, it must be done carefully. When the silo lid is opened to collect silage, it must be closed again immediately so that no air enters the silo. Before being given to livestock, silage should be aerated briefly first. For cattle that have never eaten it, give it a little at a time and mix it with the forage they usually eat.
The provision of green fodder preservation for livestock can be made in stages. For example, 75% regular feed and 25% silage feed. Mix the two together. If the cattle are used to eating silage, the amount can be increased to 50% ordinary forage and 50% silage feed. You can continue increasing this proportion until the cattle accept 100% silage.
In the process of storing silage, it must be in a very closed condition. If closing the silo with just the lid is not enough, you need another cover. Using silage film will help maintain an airtight seal and protect the nutritional value of the feed throughout the storage period. For large-scale operations, understanding the right crop baling process will further improve feed quality and preservation efficiency.
Silopak is a company that provides silage film in several sizes for green fodder preservation. By using our silage film, silage preservation will be further maintained. Entrust your silage packaging needs to us and contact our team to place your bulk order.
Green Fodder Preservation Methods at a Glance
Different preservation methods suit different farm conditions. The table below compares the most common approaches to help farmers choose what works best for their operation.
| Method | Main Principle | Storage Duration | Best Suited For |
|---|---|---|---|
| Silo (Trench/Pit) | Anaerobic fermentation in sealed underground trench | Up to 2 years | Large-scale farms with abundant forage |
| Plastic Barrel Silo | Anaerobic fermentation in sealed plastic container | Up to 1 year | Small to medium farms, flexible volume |
| Bale Wrapping (Silage Film) | Airtight stretch film wrapping of baled forage | 12 to 18 months | All farm sizes, easy handling and transport |
| Hay Making | Field drying to reduce moisture below 15% | 6 to 12 months | Dry climate regions, no fermentation required |
Frequently Asked Questions about Green Fodder Preservation
Q: What is green fodder preservation and why is it important?
Green fodder preservation is the process of storing fresh forage or plant materials in a way that maintains their nutritional value over an extended period. It is important because the availability of fresh forage is seasonal. During the dry season or periods of drought, fresh grass and other forage crops become scarce. Without preserved feed reserves, livestock will suffer from nutritional deficiency, which slows growth, reduces productivity, and increases the risk of disease. Preservation allows farmers to maintain a consistent feed supply throughout the year regardless of seasonal changes.
Q: What is the difference between silage and hay as methods of green fodder preservation?
Silage is produced by fermenting forage in an airtight environment at a relatively high moisture level, usually above 50%. The fermentation process converts plant sugars into lactic acid, which acts as a natural preservative. Hay, on the other hand, is produced by drying forage in the field until moisture drops below 15%, then storing it dry. Silage generally retains higher nutritional value because the drying process used in hay-making can cause nutrient loss. However, hay is simpler to produce in dry climates and requires no special sealing equipment.
Q: How long can preserved silage be stored?
When stored correctly in an airtight silo or wrapped bale with no leakage, silage can be stored for up to one year in a plastic barrel silo, up to two years in a properly sealed trench silo, and 12 to 18 months in wrapped bales using quality silage film. The key factor in all cases is the absence of oxygen. Any air entry will trigger aerobic spoilage, heating, and mold growth, which will rapidly degrade the feed and reduce its nutritional value.
Q: What carbohydrate additives are used in silage making and why?
Common carbohydrate additives used in silage making include bran, cornstarch, and molasses. These materials serve as a bacterial substrate, providing readily available sugars that fuel the growth of lactic acid bacteria during fermentation. A general guideline is to add approximately 3% by weight of the forage material. This is especially important when the forage being preserved is naturally low in water-soluble carbohydrates, such as legumes or mature grasses, which may not ferment efficiently on their own.
Q: How should silage be introduced to livestock that have never eaten it before?
Because silage has a distinctive fermented aroma and taste, some livestock will initially refuse it. The recommended approach is to introduce silage gradually, starting with a small proportion such as 25% silage mixed with 75% of the regular forage the animal is used to eating. Once the animal accepts this mixture and shows no negative response, the silage proportion can be increased step by step until the animal is comfortable consuming 100% silage. This transition period may take several days to a few weeks depending on the individual animal.
Q: What role does silage film play in green fodder preservation?
Silage film creates the airtight barrier that is essential for successful anaerobic fermentation. Without a proper seal, oxygen enters the stored forage and triggers the growth of aerobic bacteria, mold, and yeast, which break down the feed and destroy its nutritional value. High-quality silage film made from LLDPE material offers the stretch, puncture resistance, and UV protection needed to maintain this seal over many months of outdoor storage. Using the right film is one of the most important investments a farmer can make to protect the value of their preserved feed.
This article was last reviewed and updated by the Silopak Editorial Team on April 21, 2026. Our team periodically revisits published content to ensure accuracy, relevance, and alignment with current best practices in livestock feed management and silage preservation.
