Maize as Cattle Feed

By Vrap · Published Mon May 18 2026 00:00:00 GMT+0000 (Coordinated Universal Time) · Updated Mon May 18 2026 00:00:00 GMT+0000 (Coordinated Universal Time)

Why maize is the energy backbone of Indian cattle feed

Maize (Zea mays), also called corn, is the primary energy ingredient in cattle feed across India and most of the world. Where soybean meal anchors the protein side of a ration, maize anchors the energy side. Together they form the foundation of nearly every commercial compound feed and most farm-mixed concentrate mixes in Indian dairy. The current India market price for maize is updated daily on our maize price page.

For dairy cattle, buffalo, and growing calves, maize is the most concentrated source of starch energy available at a workable price. Two things make it the default energy ingredient in Indian compound feed:

1. High starch content. Maize is approximately 70% starch on a dry-matter basis. Starch is the most rapidly fermentable carbohydrate in the rumen and the precursor for milk fat and milk solids. No other widely available grain in India delivers this much energy per kilogram at maize's price point.
2. Year-round availability. Maize is harvested in both kharif (October–November) and rabi (March–April) seasons across many Indian states, keeping supply reasonably constant and prices less volatile than seasonal commodities.

Nutritional profile of maize for cattle

The key thing to understand: maize is bought primarily for energy, not protein. Its crude protein of 9–10% is modest — far below the 45–50% in soybean meal — and the amino acid profile is poor for monogastrics. For cattle this is fine, because rumen microbes synthesise their own protein, but it means maize must always be paired with a protein source like soybean meal, cottonseed cake, or mustard cake to make a complete ration.

To compute the DCP and TDN of any ration that includes maize, use our DCP and TDN calculator. To estimate the per-kilogram cost of a ration using today's India prices, use the ration cost calculator.

The grain family in Indian cattle feed: maize, bajra, jowar

Maize is the most common energy grain in cattle feed, but it isn't the only one. In many Indian states — especially Rajasthan, Gujarat, Maharashtra, and parts of Karnataka — pearl millet (bajra) and sorghum (jowar) are also widely used, either alone or blended with maize.

Bajra and jowar are typically cheaper than maize in their growing regions, and a 50:50 blend of maize and one of them is a common cost-saving move on farms in those areas. From a feeding perspective, all three are interchangeable as energy ingredients; the differences are mostly in local availability and price.

Moisture: the single most important specification

Moisture is the most critical parameter when buying maize for cattle feed. Maize lots must be at or below 13% moisture for safe storage. Higher moisture invites two serious problems:

1. Mould growth and aflatoxin formation — particularly Aspergillus flavus and Aspergillus parasiticus, the moulds that produce aflatoxins. Aflatoxin B1 in particular is a potent carcinogen, and it passes into milk as aflatoxin M1.
2. Bin heating and dry-matter loss — high-moisture grain respires in storage, generating heat, which can scorch the grain and cause significant tonnage loss to invisible respiration before you even see mould.

The widely-accepted Indian feed-mill safety thresholds for stored maize:

Always insist on a moisture reading on the Certificate of Analysis (CoA), and ideally take a quick handheld-meter reading at the time of delivery.

Aflatoxin: the biggest hidden risk in maize

Aflatoxin contamination is the single largest food-safety risk associated with maize in cattle feed. The Bureau of Indian Standards (BIS) and FSSAI limits are:

Why this matters financially. Even at sub-acute levels, aflatoxin contamination reduces milk yield, impairs reproductive performance, and depresses feed conversion efficiency. Severely contaminated maize can cause acute liver damage and death in cattle. And because aflatoxin M1 is regulated in milk, contaminated maize can make your milk legally unsellable to processors who test inbound supplies.

Practical aflatoxin defences:

• Buy maize with moisture below 13% — full stop, no exceptions for any maize that will be stored
• Visually inspect for dark mould patches, particularly near broken kernels and cob remnants
• Reject any lot with a sour, mouldy, or fermented smell
• Use aflatoxin binders (clay-based, activated charcoal, or yeast cell wall products) when sourcing maize during the monsoon
• Test a sample lot from any new supplier with an aflatoxin strip test or send to a lab for confirmation

Inclusion rates by animal and life stage

The following ranges assume maize is being added to a balanced concentrate mix containing protein ingredients (soybean meal, cottonseed cake, etc.), minerals, and salt. The complementary energy ingredient DORB and the fibre source wheat bran are often blended alongside maize to optimise cost and rumen health.

Hard limits to remember. Minimum useful inclusion is around 10% — below this, maize adds little energy benefit and the rest of the ration could carry the load. Maximum safe inclusion in the concentrate mix is around 35%. Going above 35% sharply raises the risk of rumen acidosis, especially if total forage in the diet is low.

Acidosis: the most common feeding mistake with maize

Rumen acidosis is the most common nutritional disease in dairy cattle, and excess maize (or any rapidly-fermentable starch) is almost always the cause. It happens when starch fermentation produces lactic acid faster than the rumen can buffer it, dropping rumen pH below 5.5 and shutting down healthy microbial activity.

Signs of acidosis in your herd:

• Drop in milk fat percentage (often the earliest sign)
• Loose, foamy, or unusually smelly dung
• Reduced feed intake
• Reduced rumination (cudding) time
• Laminitis — sole ulcers, lameness, hoof problems — in chronic cases
• Sudden death in severe acute cases

Practical prevention:

1. Cap maize at 35% of concentrate, and total concentrate at roughly 60% of dry-matter intake. A high-yielding cow should still get at least 40% of total DM as forage (green or dry).
2. Use rumen buffers like sodium bicarbonate (baking soda) at 1–2% of the concentrate mix, especially in high-producing herds.
3. Don't switch ration abruptly. Increase maize inclusion gradually over 1–2 weeks when changing rations.
4. Provide adequate effective fibre — physically long-stem forage that stimulates cudding and saliva production. Chopped straw, paddy straw, or long green fodder all work.
5. Split concentrate feeding into 2–3 meals per day rather than one large feed, especially when concentrate exceeds 5 kg/day per animal.

How to evaluate a maize lot before buying

Before accepting delivery, check:

• Moisture with a handheld meter — must be ≤ 13% for short storage, ≤ 12% for long storage
• Visible damage — broken kernels, insect damage, mould patches, sprouted grains. More than 5% damaged kernels is a quality concern
• Smell — should smell fresh and starchy. Sour, fermented, or mouldy smells = reject
• Foreign matter — stones, cob pieces, weed seeds, soil. Reputable suppliers will have less than 1% foreign matter
• Colour — yellow maize should be uniformly bright yellow; white maize uniformly off-white. Dark patches indicate mould or heat damage
• Bulk density — heavier grain is more mature and has higher starch content. Light, shrivelled grain is immature and energy-poor

Processing: whole, cracked, or ground?

How you process maize before feeding matters more than most farmers realise. The same maize, fed three different ways, gives very different feed efficiency:

Practical recommendation for Indian dairy farms: cracked or coarsely ground maize (3–5 mm particle size) for adult cattle, finely ground for calves up to 6 months. Avoid feeding whole maize to adults — you waste up to 30% of the energy in droppings.

Storage best practices

Store maize in a dry, ventilated room with the following discipline:

• Pre-storage check: moisture below 12%, no visible damage, no foreign matter beyond 1%
• Off-floor stacking on wooden or plastic pallets to prevent moisture wicking from the concrete
• Bag stacking no more than 12–15 bags high to prevent compaction at the bottom of the stack
• First-in-first-out rotation to avoid old stock degrading at the back of the warehouse
• Pest control — phosphine fumigation (under licensed handlers) for stored maize beyond 1–2 months
• Humidity — keep relative humidity below 70%, especially during monsoon
• Buffer time — 2–3 months is reasonable for properly dried maize; beyond 4–5 months expect some quality drift

Conclusion

Maize is the energy backbone of Indian cattle feed for good reason — it has the highest starch density of any widely available grain at a workable price, it's broadly available year-round, and used properly it dramatically improves milk yield and growth rates. The discipline is in using it within its limits: keep moisture below 13%, watch for aflatoxin in every monsoon-affected lot, cap inclusion at 35% of the concentrate mix, and prevent acidosis with proper buffering, fibre balance, and split feeding.

The reward for getting maize right is high-yielding, healthy cattle. The cost of getting it wrong is acidosis, dropped milk fat, contaminated milk, and avoidable veterinary bills.

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