According to studies conducted in France and Europe, dairy cows suffer from heat as much as 6-15 hours per day in summer, even in 'adapted' animal housing. This heat stress leads to loss of production of more than 3.5kg of milk per cow per day. In addition to this loss, heat stress has a negative impact on the behaviour, physiology and the balance of anti-oxidant elements in the animal organism. Thus, a prolonged exposure to heat stress may have important consequences short term, in particular on the health of dairy cows, their reproduction and, therefore, their longevity.
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