Despite the large body surface in relation to weight, calves also experience heat stress.
This mainly affects calves when there is too little cooling at night. Such as when the ambient temperature at animal level does not drop below 23 ° Celsius at night. Usually in summer, with problematic ventilation in calf hutches or shelters.
SOME PRACTICAL AND USEFUL TIPS FROM MY PRACTICE:
1. Provide shade:
Place hutches and shelters under shady trees or a roof. If this is not possible, use a “sun protection”.
Placed approximately one meter above the hutches and shelters, this already results in a temperature reduction of 3 to 4 ° Celsius in the calf's immediate living environment.
2. Spraying water cools:
I am absolutely NOT in favor of nebulizing.
If you want to apply misting, make sure that the hutches and shelters remain dry inside (preferably also outside) and that the calves have enough space to move freely inside and outside.
Spraying in the vicinity of the hutches and shelters works best.
3. Position the opening of the hutches and shelters to the east:
When these are facing east, the airspeed is highest and direct sunlight in the hutches and shelters is lowest during the day.
4. Sufficient distance between the hutches and shelters:
In order to obtain sufficient air circulation, the distance between them should be at least 1.50 meters.
If the hutches and shelters are opposite each other in several rows, the distance between the rows must be at least 3.5 meters.
5.placing hutches behind anything off the ground:
When using hutches without a fixed bottom, you can place the hutch on bricks or concrete blocks at the back.
This increases the air circulation at floor level. Some people use car tires, but these block much more of the opening than bricks or concrete blocks.
In my experience, calves housed in hutches and on straw for extended periods of time push the straw towards the back so that the opening at the bottom is blocked (especially when using car tires).