Cattle feed is one of the biggest drivers of performance and profit in a grazing business.

Feed influences growth rates, milk production, fertility, animal health and ultimately sale weights. It is also one of your largest input costs.

Strong feeding decisions come down to one principle: match nutritional demand to pasture supply, season and class of stock.

This guide focuses on the fundamentals of cattle feeding in Australian grazing systems and how to make better feed decisions year-round.

Start with the Basics: What Do Cattle Actually Need?

Cattle require energy, protein, fibre, minerals and clean water.

Requirements shift depending on class and stage of production.

A lactating dairy cow needs a higher-energy ration to support milk production. A growing steer needs protein for frame and muscle development. A dry cow in maintenance requires less energy than one preparing to calve.

Age, breed, body condition and environmental stress all influence demand.

Before selecting feed, ask:

What is the animal trying to achieve right now?

Maintenance? Growth? Lactation? Recovery?

Feed should serve that purpose.

The Main Types of Cattle Feed

Most Australian grazing systems rely primarily on pasture. Grass remains the natural foundation of a cow’s diet and, when managed well, is the most cost-effective feed source available.

When pasture supply tightens, other feed sources play a role.

Grain-based feeds such as wheat, barley or sorghum increase energy intake, particularly in finishing systems. These feeds are high in starch and require careful introduction to protect rumen health.

Hay and silage provide stored forage during winter or dry seasons. Legume hay such as lucerne delivers higher protein, while cereal hay provides fibre and bulk.

Supplements correct mineral deficiencies or lift protein where pasture quality drops. Requirements vary by region, soil type and seasonal conditions.

There is no universal best feed. The right choice depends on pasture availability, cattle class and budget.

Matching Feed to the Season

Season shapes feed strategy in Australia.

In spring, pasture growth may exceed demand. In late summer or during drought, feed quality and availability can decline quickly.

Winter often requires stored fodder or targeted supplementation as pasture growth slows. During dry conditions, feed testing becomes critical. Declining pasture quality can reduce protein levels and mineral balance.

Effective feeding management means adjusting rations early.

Regular monitoring of pasture levels and animal condition prevents sudden feed shortages and protects performance.

Cattle Feed Budgeting

Feed is often the largest variable cost in a grazing operation.

Budgeting starts with estimating available dry matter and total livestock demand.

From there, calculate:

• Expected feed requirement per head
• Total herd demand
• Length of feeding period
• Cost per tonne of supplementary feed
• Transport, storage and wastage

Freight, wastage and labour quickly lift total feeding costs. Ignoring them distorts margins.

Accurate feed budgeting protects cash flow and reduces reactive purchasing during shortages.

Balancing Grazing and Supplementary Feeding

Pasture should carry the bulk of the workload where possible.

Supplementary feeding fills the gap when pasture growth or quality falls short.

Excess grain increases cost and raises health risks such as acidosis. Insufficient feeding during critical growth or lactation stages reduces productivity and fertility.

The objective is balance.

Strong grazing management reduces reliance on expensive inputs. Supplementation supports the system rather than driving it.

Assessing Feed Quality

Feed quality matters as much as quantity.

Start with visual inspection. Mould, unusual odours or excessive dust signal spoilage. Quality hay retains colour and structure rather than appearing weathered or degraded.

Feed testing provides clearer insight into protein, energy and mineral levels. This is particularly valuable when purchasing large volumes of hay or silage.

Poor storage or unreliable supply erodes performance. Supplier consistency matters.

Choosing Reliable Feed Suppliers

Price alone rarely reflects value.

Consistency, quality control and delivery reliability carry equal weight. A cheaper load of low-quality hay can cost more through lost performance than a premium alternative.

Keep records of supplier performance, pricing trends and delivery reliability. Over time, this builds confidence in your purchasing decisions.

Managing Common Feeding Challenges

Feed-related health issues often present as:

• Reduced weight gain
• Digestive upset
• Behaviour changes
• Declining fertility

Investigate early signs promptly. Where health concerns arise, seek veterinary advice.

During seasonal or market-driven shortages, review stocking rates, alternative forage sources or grazing allocation before turning to high-cost concentrates.

Strong grazing management reduces exposure to emergency feeding.

The Role of Technology in Feed Management

Technology supports better timing and clearer decision-making.

Pasture monitoring tools, feed budgeting software and livestock performance tracking systems provide visibility over supply and demand.

Knowing when pasture levels are tightening allows you to adjust stocking or supplementation before condition drops.

Technology should sharpen judgement, not replace it.

Bringing It Together

Cattle feeding comes down to alignment.

Align feed supply with livestock demand. Protect pasture condition. Control cost.

The most profitable systems rely on well-managed pasture and use supplementary feeding with intent.

Atlas Grazing connects pasture monitoring, stocking rates and feed budgeting so you can see how feeding decisions influence carrying capacity and profitability.

Feed with purpose.

Simple to start. Powerful enough to scale

‍