Mixed Fodder Model, Silage and TMR
1. The 10 cent mixed fodder model
A 10 cent plot (about 405 m²) grown with grass, cereal, legume and tree fodder gives a regular supply of green fodder through the year. Grass gives bulk and energy, legumes give protein, and tree leaves and Azolla fill the gaps
| Component | Area | Planting and harvest | Yield per year (approx.) |
| Hybrid Napier (CO-3, CO-4, CO-5) | 4 cents | Rooted slips at 60 × 50 cm on ridges. First cut at 60–75 days, then every 40–45 days at 15 cm above the ground. | 4–5 tonnes |
| Maize or sorghum | 3 cents | Grow in rotation at 30 × 10 cm. Cut cereal at 50–60 days (before flowering) and cowpea at 45–50 days. | 1.5–2 tonnes |
| Hedge lucerne (Desmanthus) or Fodder Cowpea | 3 cents | Perennial legume at 30 × 10 cm. First cut at 75–90 days, then every 45–60 days. | About 0.6 tonne |
| Tree fodder on bunds (Agathi, Subabul, Gliricidia) | Bunds | Lop leaves regularly once the trees are established. Feed in small quantities to cattle and more freely to goats. | Supplement |
| Azolla pits, compost pit, walkway | Harvest Azolla every day. Use the compost pit for plot waste and dung. | Supplement |
Expected output: about 6–8 tonnes of green fodder a year, or 16–22 kg a day. This covers most of the green fodder for one adult cow when fed with dry fodder and concentrate. A larger area under Napier is needed for two cows.
Key Practices:
- Land and manure. Plough to a fine tilth and apply about 100 kg farmyard manure per cent. Give basal phosphorus and potash as per the soil test.
- Top dressing. Apply about 0.5 kg urea per cent after every cut of Napier and cereal fodder. Do not top dress legumes.
- Every 7–10 days, and every 5–7 days in light soils in summer. Drip irrigation saves water.
- Continuous supply. Divide the Napier into 4–5 strips and cut one strip every 8–10 days, so fresh fodder is always ready.
- Chaff the fodder to 2–3 cm and mix grass and legume at about 2:1. Wilt legumes for a few hours before feeding. Give up to 1–1.5 kg fresh Azolla per cow per day.
- Make silage from extra maize or sorghum so the fodder lasts through summer.
2. Silage Preparation:
Silage is green fodder preserved by fermentation without air. Lactic acid bacteria turn the sugars in the fodder into acid, which lowers the pH to about 3.8–4.2 and keeps the fodder fresh for months. It gives a green, palatable feed in summer and the lean season.
| Crop | Harvest Stage | Notes |
| Fodder maize | Dough stage, about 30–35% dry matter (65–70% moisture) | The best silage crop. Ferments easily with no additive. |
| Fodder sorghum | Soft dough stage | Good alternative to maize. Do not use young or drought-stressed plants. |
| Napier and Bajra-Napier | 50–60 days, 1.5–2 m height | Wilt for 3–4 hours and add molasses, because the fodder is high in water and low in sugar. |
Pit (Trench) Silage: Steps
- Prepare the pit. Choose a high, well-drained site close to the shed. Line the pit with a plastic sheet. Plan about 1 m³ for every 550–600 kg of silage. One cow fed 15 kg a day for 100 days needs about 1.5 tonnes, or a pit of 2.5–3 m³.
- Harvest and chop. Cut at the right stage and chop to 1–2 cm with a chaff cutter. Short pieces pack tightly and ferment well.
- Add molasses if needed. For Napier and other low-sugar fodder, mix 2–4% molasses (20–40 kg per tonne) diluted in water. Lactic acid bacteria inoculants can be used as per the label.
- Fill and compact. Fill within 1–2 days in layers of 20–30 cm and press each layer firmly by trampling or with a roller. Remove all the air.
- Seal airtight. Mound the top, cover with a thick plastic sheet and press the edges down with soil. Weigh the sheet down with soil or sandbags, and make a drain so rainwater runs away.
- Leave the pit closed for at least 45 days. Do not open it earlier.
- Open and feed. Open one face only and remove a 15–20 cm layer every day. Re-cover the face with the sheet after each use.
Quality Feeding:
- Good silage smells pleasantly sour, is yellowish green, and has firm, clean leaves and stems.
- Bad silage smells rotten or like butter, is dark brown, slimy or mouldy. Throw away all mouldy portions.
- Feeding: Start with 5 kg per cow and increase slowly to 15–20 kg a day over a week, along with dry fodder and concentrate. Feed after milking so the silage smell does not taint the milk.
Baled Silage:
In baled silage, wilted fodder is pressed into round bales and wrapped tightly in plastic film. Each bale is a small airtight silo.
- Harvest and wilt. Cut Napier, Bajra-Napier or sorghum at the right stage. Wilt in the field to about 40–50% dry matter (50–60% moisture). This takes a few hours to a day in hot weather.
- Make dense, firm round bales with a baler. Loose bales trap air and spoil.
- Wrap quickly. Wrap each bale with UV-stabilised stretch film within a few hours, and in any case within 24 hours. Use at least 4 layers, and 6 layers for wetter fodder or longer storage, with half of each layer overlapping the last.
- Store: Keep the bales on a flat, well-drained, hard surface away from trees. Protect them from rats, birds and stray animals. Patch any hole in the film straight away with tape.
- Feed: Bales are ready in 4–6 weeks and keep for 6–12 months if the film stays intact. Feed an opened bale within 3–5 days (2–3 days in hot weather).
| Features | Pit (trench) silage | Baled silage |
| Moisture at ensiling | 65–70% (30–35% dry matter) | 50–60% (40–50% dry matter) |
| Equipment | Chaff cutter, pit, plastic sheet | Baler, bale wrapper, stretch film |
| Cost | Low | High; hire the machines |
| Storage | Fixed pit | Bales can be moved and stored anywhere |
| Best for | Maize and sorghum in large quantity | Napier and grasses, and small lots |
| Main risk | Air entry and mould on the surface | Film puncture and rat damage |
3. Total Mixed Ration (TMR)
TMR is a ration in which all feed ingredients, including green fodder, dry fodder, silage, concentrate and minerals, are chopped and mixed so that every mouthful has the same balanced nutrients. The cow cannot pick out the tasty parts and leave the rest.
Why TMR
- Steadier rumen. A uniform feed keeps the rumen stable and lowers the risk of acidosis.
- Better feed use. Less wastage and better milk yield and animal health from the same feed.
- Lower cost. Cheap local by-products (maize stover, groundnut haulms, sugarcane tops, coconut cake) can be included safely.
- Less labour. One mixing and one feeding operation for the whole group.
How to Prepare:
- Group the animals. Feed high-yielding, medium-yielding, low-yielding and dry cows with separate TMRs.
- Chop the roughage. Chop dry and green fodder to 2–5 cm.
- Mix in order. Spread the dry fodder first, then the silage and green fodder, then the concentrate, and last the mineral mixture and salt. Sprinkle a little water or diluted molasses to bind the mix. Use a mixer wagon, or mix by hand on a clean concrete floor for small herds.
- Check the mix. The TMR should be moist but not wet (dry matter about 45–55%), with no separate lumps of concentrate.
- Feed fresh. Feed once or twice a day and push the feed back to the manger often. Leave 2–5% as leftover and remove it every day.
- Change slowly. Move animals from their old ration to TMR over 7–10 days.
| Group | Forage : concentrate (dry matter) | Note |
| High yielders (above about 15 litres) | 50 : 50 | Add bypass fat or protein if available. |
| Medium yielders (about 8–15 litres) | 60 : 40 | The most common group in small herds. |
| Low yielders (below about 8 litres) | 70 : 30 | More roughage and less concentrate. |
| Dry cows | 80 : 20 | Use a dry-cow mineral mix and avoid over-feeding. |
Sample TMR (indicative)
For a crossbred cow of about 400–450 kg giving about 10–12 litres of milk a day:
| Ingredient | Quantity (kg per cow per day, as fed) | Role |
| Maize silage | 12 | Energy and bulk |
| Green fodder (Napier, cowpea) | 8–10 | Fibre and protein |
| Dry fodder (straw, stover) | 3 | Effective fibre |
| Concentrate mixture | 4–5 | Energy and protein |
| Mineral mixture | 0.05 | Minerals and vitamins |
| Common salt | 0.03 | Sodium and palatability |















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