Why are horses more dependent on drinking water than ruminants or camels?
What will be an ideal response?
Horses (order Perissodactyla) are hindgut fermenters, while camels and ruminants (order Artiodactyla) have a ruminanting system of foregut fermentation. The digestive physiology of ruminants (including camels) involves the process of nitrogen cycling, and waste urea from other physiological processes can be added to this system. Thus ruminants excrete less urea, and thus need less water to form the urine, and so are better at overall water conservation than hindgut fermenters.
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Fill in the blank(s) with the appropriate word(s).
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