Water (Animal N Exam 2)

What is the major component in body metabolism and a major factor in temperature control

Water

What is the transportation of water through the body

GI tract, Blood and various other body fluids

What is hydrolysis

Water as a substrate

What is oxidation

Water as a product

What does the ingestion and metabolism of feeds/nutrients do

Increase respiration, heat dissipation and urea excretion (protein)

What can high specific heat do

absorb large quantities of heat and is higher than any other liquid

What is high thermal conductivity

movement of heat from body interior

What is high latent heat of vaporization

sweating and panting

What does absorption occur

Non-secretory GI sites such as cecum, large intestine, colon, rumen and more

What is water absorption regulated by

Osmotic pressure

How much water is in the body

~73%

What can body water estimate

Body composition and water content, deuterated water and percent of fat

How do you determine the percent of fat

100 -(% water/.732)

What percent of water is in the intracellular

~40%

What percent of water is in the extracellular

~33%

What is the location of the most variable amount of water in the body

GI tract

What are 3 examples of water sources

Drinking water, water in/on feed and metabolic water

Where is water lost

Urine, feces, sweat and vaporization from lungs or skin

What are the dietary factors that affect water requirements

DM intake, feed water content, high protein intake and salt

What environmental factors affect water requirements

temperature and heat stress

What is the volume of water required

2-5kg water/kg DM

How does your body react to low water

reduced feed intake, reduced productivity, decrease in urine and feces and rapid weight loss

What can negatively impact water quality

nitrates, nitrites, fluoride and heavy metals