When a high temperature is identified early, the best course of action for treatment can be decided in a timely manner and timely intervention will generally improve the outcome of any treatment required.

Recording calf temperatures will come as second-nature to specialised calf rearers, but some farmers may not be familiar with how the simple procedure is done.

On a recent visit to the ABP Demo Farm in Co. Carlow, Matthew Quinn demonstrated how farmers rearing calves can quickly identify if a calf has a high temperature.

Digital thermometers can be purchased at any pharmacy and are generally not expensive.

It is also a very useful tool for any farmer to have in their animal health inventory.

Quinn explained that if a calf is observed that may seem dull, it is "very important" to take the temperature of that animal.

Taking a calf's temperature

A lubricated digital thermometer is turned on and then placed in the calf's rectum for 30-60 seconds.

When the temperature has been recorded, the thermometer bleeps and the reading can be taken.

Commenting on how he visually identifies calves that may need attention, he said: "Basically, you're looking at a number of things: are they stretching; are their eyes sunken in their head; are their ears down, is probably the biggest tell-tale sign whether they're sick or not."

He also added that calves that are slow to get up or slow to drink should also be closely observed for health.

According to Teagasc, a body temperature of over 39.5°C is considered 'high' for a calf.