Fill in the correct numbers and percentages.

• A dairy cow weighs on average --Select-- 500 650 800 1000 kg. This puts a considerable strain on her hooves and legwork. Therefore, the cows must lie down and rest at least --Select-- 5 10 14 18 hours a day. A well-rested cow often eats more and drinks more water. A cow that can lie down well also produces more milk. When a cow is lying down --Select-- 10 30 70 90 % more blood flows through the udder. A cow also preferably ruminates lying down, approximately --Select-- 50 75 90 100 % of the total rumination period.