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Cool Cows and Climate Change - Information for Dairy Farmers
How much water do cows need in hot weather?
Mating management
Milking times
Paddock rotation
Summer nutrition program
Access to cool drinking water

Managing in the heat

Hot season strategies

For herd producing up to 8,000 litres or 600kg MS / cow / year

You are probably only feeding a moderate amount of grain / concentrates per cow per day, so there should be scope to safely increase it to boost cows’ daily energy intake. You will need to be sure that fibre intakes are maintained and that you are effectively managing the risk of ruminal acidosis. For more information, visit www.dairyaustralia.com.au.

  • Make sure you have adequate levels of effective fibre in the diet.
  • Increase your grain/concentrate intake.
  • Consider including a slowly fermenting starch source, such as corn, in the diet.
  • Include buffers in the diet at a high rate.

 

Review current practices: What could you change?

Low Risk

Moderate Risk

High Risk

In the hot season, I increase my cows grain/concentrate feeding rate to try and to maintain daily energy intake

Yes

To some extent

No

In the hot season, I incorporate a slowly fermenting starch source such as corn in the cows diet

Yes

To some extent

No

I incorporate extra buffers, +/- rumen modifiers, other additives to help the cows cope in the heat.

Yes

To some extent

No

I offer my cows more forage fibre in the hot season

Yes

Sometimes

No

The nutritional quality and palatability of the forage I offer is ….

High quality

Average quality

Fair to poor quality

I mix and feed this fibre with other feeds in a partial mixed ration (PMR) via a mixer wagon

Yes

 

No

I deliberately feed higher quality protein sources in the hot season

Yes

Sometimes

No

In the hot season, I deliberately feed higher levels of potassium, sodium and magnesium

Yes

 

No

 

See Further Information, for details about dietary fibre, fat, protein, essential minerals and buffer requirements in the hot season.

Australian Government - Department of Agriculture, Fisheries and Forestry