Thursday, 19 May 2022 12:55

Nutritional strategies can help mitigate heat stress

Written by  Chris Balemi
Heat stress in cows occurs when they are producing more heat than they are able to get rid of through sweating, respiration, or air regulation. Heat stress in cows occurs when they are producing more heat than they are able to get rid of through sweating, respiration, or air regulation.

Heat stress in dairy cattle is probably the most overlooked seasonal problem here in New Zealand.

Production drops rapidly as the heat increases, and most farmers simply accept this as a normal seasonal issue that they are powerless to address.

The truth is, there are a number of nutritional strategies that can be used in order to mitigate the effects of heat stress.

It is a well-known fact that cows generate heat in order to create the energy to produce milk, and during the summer this will be out in the paddock in the heat of the sun. Heat stress in cows occurs when they are producing more heat than they are able to get rid of through sweating, respiration, or air regulation.

An overabundance of heat in cows can lead to higher levels of stress, which will affect milk production, fertility, as well as increase the risk of other diseases such as lameness, and can also impair immune function.

Untreated heat stress can be fatal, which is why it’s vital to understand the signs of heat stress, and the best ways in which to prevent it. Watch for changes in behaviour, such as seeking shade, panting, drooling, and standing in water or next to troughs, as signs that your cows may be experiencing heat stress.

When cows are suffering heat stress, feed intake is reduced. This will be accompanied by increased panting and drooling culminating in less saliva reaching the rumen, this decreases rumination by disrupting rumen pH. A healthy rumen is needed for milk yield as well as animal health.

It is therefore important that ruminant animals during periods of high humidity are provided with sufficient nutrients in order to counteract heat stress and maintain strong immunity.

By providing your herd with an easily digestible, nutrient-packed animal tonic that can be blended easily into their feed or added into their water, you ensure that they have the correct balance in place to mitigate the effects of this summer heat stress.

Chris Balemi is managing director, Agvance Nutrition Ltd

More like this

Two hemispheres tied together through cows

One of New Zealand’s deepest breeder Jersey herds – known for its enduring connection through cattle with the UK’s longest reigning monarch, Queen Elizabeth II – will host its 75th anniversary celebration sale on-farm on April 22.

Farmers fined for cattle abuse

A Waikato cattle farming family have been fined $23,000 for failing to provide sufficient food and care for their animals, resulting in more than half a dozen animal deaths.

App trial yields promising results

An initial trial of an app, funded by Beef + Lamb New Zealand, has demonstrated significant results in reducing drench inputs during a small-scale study.

Featured

TV series to combat food waste

Rural banker Rabobank is partnering with Food Rescue Kitchen on a new TV series which airs this weekend that aims to shine a light on the real and growing issues of food waste, food poverty and social isolation in New Zealand.

Celebrating success

The Director General of MPI, Ray Smith says it's important for his department to celebrate the success of a whole range of groups and people around the country.

Biosecurity award for M. bovis work

A small company which mobilised veterinarians around the country to deal with Mycoplasma bovis was one of the winners in this year's Biosecurity Awards, held at Parliament.

Cyclone's devastating legacy

One of the country's top Māori sheep and beef farms is facing a five-year battle to get back to where it was before Cyclone Gabrielle struck just over 14 months ago.

National

Frontline biosecurity 'untouchable'

Biosecurity Minister Andrew Hoggard has reiterated that 'frontline' biosecurity services within Ministry for Primary Industries (MPI) will not be cut…

Machinery & Products

New name, new ideas

KGM New Zealand, is part of the London headquartered Inchcape Group, who increased its NZ presence in August 2023 with…

All-terrain fert spreading mode

Effluent specialists the Samson Group have developed a new double unloading system to help optimise uphill and downhill organic fertiliser…

» Latest Print Issues Online

Milking It

Plant-based bubble bursts

OPINION: Talking about plant-based food: “Chicken-free chicken” start-up Sunfed has had its valuation slashed to zero by major investor Blackbird…

» Connect with Dairy News

» eNewsletter

Subscribe to our weekly newsletter