How to Prioritise Which Cows Need Checking First

JamesJuly 10, 202616 min read

When time is limited, the challenge is not simply checking the herd. It is knowing which cows need to be checked first.

Most cattle will appear normal during a routine inspection. A small number may be showing subtle changes in movement, feeding, posture or behaviour that suggest something is wrong, but these animals are not always easy to identify from a distance.

A useful checking routine should help farmers prioritise animals according to risk rather than treating every cow as equally likely to need attention.

This does not replace a proper herd inspection. It provides a practical way to focus limited time on the animals most likely to benefit from a closer look.

Why prioritising cows matters

Cattle often hide early signs of illness, injury or discomfort.

An animal may still be standing with the herd while eating less, moving differently or beginning to separate from the group. During a quick inspection, these changes can be easy to overlook.

The difficulty increases when:

Cattle are spread across several fields
Parts of the farm have poor visibility
Animals are housed in a large group
The farmer is working alone
There are several different age groups to manage
Calving or calf-rearing has increased the daily workload
Farming is combined with off-farm employment
Checks are carried out in poor weather or darkness

The aim of prioritisation is not to shorten checks to the point where important problems are missed. It is to give farmers a clear order for deciding where closer attention is most useful.

Start by looking at the whole group

Before focusing on individual animals, it is useful to observe the herd as a group.

Normal group behaviour provides context. If most cattle are grazing, feeding, resting or moving together, an animal behaving differently may deserve closer inspection.

During the first overview, farmers can look for:

An animal standing apart from the group
A cow that remains lying while others rise
An animal arriving late to feed or water
Reduced movement compared with the rest of the herd
Repeated lying down and standing up
Unusual restlessness
A change in the normal spread or movement of the group
Animals being displaced or bullied away from feed

Looking at the group first can make individual differences easier to recognise.

It can also reveal a wider issue. If several animals show similar changes, the problem may relate to feed, water, housing, weather, grazing conditions or a shared health risk rather than one individual cow.

1. Check animals that have separated from the herd

A cow standing away from the group should usually be one of the first animals assessed.

Separation does not always mean that something is wrong. Cattle may move away from the herd to calve, seek shade, avoid competition or rest in a preferred area.

However, isolation can also be associated with:

Illness
Injury
Lameness
Calving
Stress
Weakness
Difficulty competing for feed

The context matters.

A heavily pregnant cow standing alone close to her expected calving date may be behaving normally, but she should still be watched for signs that labour is beginning.

A cow with no obvious reason to be alone may need a closer examination, particularly if she is also inactive, dull, eating less or holding her head lower than usual.

2. Prioritise cows that are eating or drinking less

A change in appetite can be an important early warning sign.

Cattle may reduce their intake when they are unwell, lame, stressed, in pain or unable to compete successfully at the feed barrier.

During a herd check, farmers can look for animals that:

Do not approach feed with the rest of the group
Leave the feed area earlier than usual
Stand at the feed barrier without eating
Appear interested in feed but struggle to reach it
Are repeatedly displaced by other cattle
Spend less time grazing
Show reduced rumination
Do not approach the water source

One short observation may not reveal the full picture. An animal could have eaten before the farmer arrived or may simply be resting.

Repeated changes are more meaningful. A cow that consistently hangs back at feeding time or spends less time eating than normal should move higher on the priority list.

3. Look closely at changes in movement

Movement can reveal problems that are not immediately visible when an animal is standing still.

A cow may need closer attention if she:

Walks more slowly than the group
Takes shorter or uneven steps
Arches her back while walking
Avoids putting weight on one limb
Struggles to rise
Lies down more frequently than normal
Is reluctant to walk to the parlour, feed area or water
Falls behind when the herd moves

Lameness is not always dramatic in its early stages. Small changes in gait, posture or walking speed may appear before an animal becomes obviously lame.

Animal Health Ireland highlights that lameness has important welfare and financial consequences and can affect milk production, fertility and longevity.

Read Animal Health Ireland's guidance on the effects of lameness in dairy cows .

Watching cattle walk on a level, non-slip surface can make differences easier to identify than observing them while they are standing in deep bedding, rough ground or long grass.

4. Check cows whose normal behaviour has changed

The most useful comparison is often not one cow against another. It is the cow against her own normal behaviour.

Some animals naturally spend more time away from the group. Others are quieter, more active or more dominant at feeding.

A meaningful change may include:

A normally active cow becoming unusually still
A quiet animal becoming restless
A cow spending more time lying down
An animal repeatedly standing and lying
A reduction in grazing or feeding
Less rumination
A cow no longer moving with her usual group
An animal becoming unusually aggressive or withdrawn

This is one reason why farmer knowledge remains so important. Someone familiar with the herd may notice that an animal is simply not behaving like herself, even when there is no obvious clinical sign.

Monitoring technology can support this by comparing current activity with an individual animal's established pattern rather than relying only on a fixed herd-wide threshold.

5. Prioritise cows around calving

Cows approaching calving often require more frequent observation than the rest of the herd.

Priority should be influenced by expected calving dates, previous history and current behaviour.

Animals that may need closer attention include:

First-calving heifers
Cows with a history of difficult calving
Animals carrying twins
Cows beyond their expected calving date
Animals bred to a higher calving-difficulty sire
Cows showing restlessness or repeated lying and standing
Animals separating from the herd
Cows showing discharge or visible signs that labour is progressing

A cow approaching calving may reduce her interest in grazing, seek a quieter location or change her normal lying pattern.

These signs do not indicate exactly when the calf will be born, but they can help farmers decide which animals should be checked more closely.

Where labour appears not to be progressing normally, the cow should be assessed promptly and veterinary advice sought when necessary.

Read Teagasc's practical guidance on when to intervene during calving .

6. Pay closer attention to recently calved cows

The period after calving can place significant demands on the cow.

Recently calved animals may be at greater risk of problems such as:

Milk fever
Retained foetal membranes
Uterine infection
Mastitis
Ketosis
Injury following a difficult calving
Reduced appetite
Poor recovery after an assisted birth

Priority animals may include cows that:

Required assistance during calving
Delivered twins
Are slow to return to feeding
Appear dull or weak
Have an abnormal discharge
Show swelling or heat in the udder
Have a reduced milk yield
Are reluctant to rise or walk

Good calving records make this process easier. Farmers should be able to identify recently calved cows that experienced complications without relying on memory during a busy period.

7. Check animals with a recent health or treatment history

An animal that has recently been ill, treated or injured should remain higher on the priority list until recovery is clear.

Farmers may need to monitor:

Whether appetite has returned
Whether activity is returning to normal
Whether temperature remains abnormal
Whether the animal is walking comfortably
Whether symptoms are improving
Whether the animal has rejoined normal group behaviour
Whether the treatment appears to be working

A cow may look improved during one inspection but decline again later.

Clear records help ensure that follow-up checks are completed and that information is available if several people share responsibility for the herd.

Animal Health Ireland notes that records can be particularly valuable where subclinical disease affects performance before obvious clinical signs are visible.

Read Animal Health Ireland's guidance on records and preventing disease spread within the farm .

8. Prioritise young calves and newly purchased animals

Young calves can deteriorate quickly and may show less obvious signs before becoming seriously unwell.

Calves that should receive closer attention include those that:

Had a difficult birth
Did not receive sufficient colostrum promptly
Are reluctant to feed
Have scour
Show coughing or rapid breathing
Have nasal or eye discharge
Appear hollow-sided or dehydrated
Remain lying when others rise
Have a swollen or infected navel
Are smaller or weaker than the group

Teagasc guidance for dairy calf-to-beef systems emphasises the importance of inspecting calves for signs of poor health regardless of the rearing system.

View Teagasc guidance on calf health and dairy calf-to-beef management .

Newly purchased cattle should also be observed carefully.

Transport, mixing, a change in feed and exposure to unfamiliar pathogens may increase risk. Separating or quarantining new arrivals can make observation easier and help reduce the risk of introducing disease to the existing herd.

9. Check animals exposed to a recent management change

Changes in routine can affect cattle behaviour even when no animal is ill.

Closer observation may be useful after:

Moving cattle to a new field
Housing or turning animals out to grass
Changing feed
Mixing unfamiliar groups
Weaning
Transport
Handling or dosing
Introducing a new bull
Severe weather
A disruption to water supply

These events can create temporary changes in activity, feeding and social behaviour.

They can also reveal practical problems. An animal may not understand the location of a new water source, may be bullied in a newly mixed group or may struggle with a sudden feed change.

Knowing that a management change has occurred helps farmers interpret unusual behaviour rather than assuming every change is caused by disease.

10. Look for several small signs occurring together

One small change may have a harmless explanation.

Several changes occurring together are more concerning.

For example:

Isolation combined with reduced feeding
Low activity combined with a raised temperature
Falling behind the herd combined with an uneven gait
Repeated lying and standing close to an expected calving date
Reduced rumination combined with lower milk production
Dullness combined with rapid breathing

The more signs that point in the same direction, the stronger the reason to examine the animal promptly.

This does not provide a diagnosis. It helps determine priority.

A simple priority system for herd checks

A practical way to organise checks is to group animals into three levels.

Priority one: check immediately

These animals show signs that may require urgent assessment.

Examples include:

Difficulty breathing
Inability to rise
Severe lameness or injury
Strong straining without progress during calving
Signs of serious distress
A calf that is weak, cold or unable to feed
Sudden collapse or neurological signs
Heavy bleeding

Veterinary advice should be sought promptly where the farmer is concerned about the welfare of the animal or unsure how to proceed.

Priority two: examine closely today

These animals show a meaningful change but do not appear to be in immediate danger.

Examples include:

Standing apart from the herd
Reduced feeding
Unusual inactivity
A mild change in gait
Repeated behavioural changes
Poor recovery after calving
A recent health alert
A recent treatment requiring follow-up

Priority three: continue routine observation

These animals appear normal and are eating, drinking, moving and interacting as expected.

They should still be included in routine checks, but they may not require the same level of individual inspection as animals showing a meaningful change.

What should a closer examination include?

Once an animal has been identified as a priority, the next step is a closer assessment.

Depending on the concern, this may include checking:

Appetite and rumination
Body temperature
Breathing rate and effort
Eyes and nasal discharge
Gait, feet and limbs
Udder condition
Manure consistency
Hydration
Body condition
Signs of injury or swelling
Calving progress
Recent treatments and health records

The farmer should consider the whole animal rather than relying on one measurement.

A normal temperature does not rule out every problem, just as a temporary change in activity does not confirm illness.

Veterinary advice should be sought when symptoms are severe, persistent, unexplained or worsening.

How monitoring technology can help prioritise cows

Manual checks provide valuable information, but they only show what is happening at the moment the farmer is present.

A monitoring system can add visibility between checks by tracking changes over time.

Depending on the system, it may help identify:

A fall in activity
A change in feeding or rumination
Unusual lying patterns
Increased restlessness
A rise in temperature
Separation from the herd
An animal that has moved less than expected
A cow whose behaviour differs from her normal pattern

The main benefit is not receiving more data. It is receiving a useful shortlist.

Instead of beginning each check with the entire herd, the farmer can first examine animals showing the most meaningful changes.

This may be particularly useful where cattle are:

Spread across multiple fields
Grazing away from the yard
Managed in several groups
Being checked overnight
Housed in large numbers
Difficult to observe individually

Monitoring technology cannot determine the cause of every behavioural change. An alert should be treated as a reason to inspect the animal, not as a diagnosis or instruction to treat.

Avoid creating more work through unnecessary alerts

A monitoring system is only useful if its alerts help the farmer make a decision.

Too many low-value alerts can create additional work and make important changes harder to recognise.

A useful system should make it clear:

Which animal needs attention
What changed
When the change began
How significant the change appears to be
Whether several indicators changed together
Where the animal is, if location is available

It should also learn what is normal for the individual animal and account for known events such as movement between fields, handling or changes in group structure.

The purpose is to make checks more targeted, not to replace one long task with a long list of notifications.

Use records to improve future checks

Prioritisation becomes more accurate when farmers have useful records.

Relevant information may include:

Previous illnesses
Recent treatments
Calving history
Expected calving dates
Lameness history
Milk-recording information
Weight and growth records
Previous monitoring alerts
Animals that repeatedly require attention

Records can reveal patterns that are difficult to remember across a busy season.

For example, a cow showing reduced activity may be more concerning if she also experienced a difficult calving, recently received treatment or has a history of lameness.

Teagasc has highlighted the importance of using herd information to identify cows that need attention and support better animal-health decisions.

Read Teagasc guidance on using herd records to support animal-health decisions .

Prioritising does not mean ignoring the rest of the herd

Every animal still requires appropriate routine observation.

A cow that appears normal during the morning check may show a meaningful change later in the day. Conditions can also develop between inspections.

Prioritisation should therefore be used to decide:

Which animals to inspect first
Which animals need a closer physical examination
Which animals need follow-up later
Which animals require veterinary attention

It should not be used to assume that animals without an alert or obvious sign are guaranteed to be healthy.

Looking ahead

Farmers cannot give every cow the same level of individual attention during every herd check.

The practical goal is to identify meaningful differences early and direct attention towards the animals most likely to need it.

That means looking first for changes in isolation, appetite, movement, posture, activity and normal behaviour, while also considering calving dates, recent health events and individual history.

At Graze Technologies, we are developing cattle-monitoring technology designed to help farmers identify meaningful changes in activity and behaviour and prioritise which animals may need checking first.

The aim is not to replace routine herd checks or farmer judgement. It is to give farmers another layer of visibility between inspections and help them focus limited time where it may have the greatest value.

Frequently asked questions

Which cows should be checked first?

Farmers should generally prioritise cows showing signs of distress, isolation, reduced feeding, altered movement, unusual inactivity, calving difficulty or poor recovery after calving. Recently treated animals, young calves and cows with a known health risk may also need closer attention.

Why is a cow standing away from the herd?

A cow may separate because she is approaching calving, seeking shelter, avoiding competition or resting. Isolation can also indicate illness, injury, lameness or stress, particularly when accompanied by reduced feeding or unusual inactivity.

What behavioural changes can indicate illness in cattle?

Possible changes include reduced activity, eating less, lower rumination, spending more time lying down, falling behind the herd, standing alone or behaving differently from the animal's normal pattern. These changes do not diagnose a specific condition but can indicate that the animal should be examined.

Does a cow with low activity always need treatment?

No. Low activity can be influenced by rest, weather, grazing conditions, handling, calving or other factors. It should prompt closer observation rather than automatic treatment. The farmer should assess the whole animal and seek veterinary advice where necessary.

Can monitoring technology tell which cows are sick?

Monitoring systems cannot diagnose illness. They may identify changes in activity, behaviour, feeding or temperature that suggest an animal should be checked more closely.

Can cattle monitoring reduce routine checks?

Monitoring does not remove the need for routine checks. It may make checks more targeted by highlighting animals showing meaningful changes, allowing farmers to prioritise their time more effectively.

What should farmers check when a cow is behaving differently?

Depending on the concern, farmers may assess appetite, temperature, breathing, gait, rumination, manure, udder condition, injuries, hydration, calving status and recent health history. Veterinary advice should be sought where signs are severe, persistent or unclear.