Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Lecture 2 8/31/11 E1


Why is Water Important -vital -cheapest and most abundant nutrient -animals survive longer without feed than water (up to 60 days w/o feed, 7 days w/o water) -only 1% of the world's water is "fresh"
Total Body Content -45-85% (avg. 60-70%) -younger>older animals
Water in the Body -blood: 90-95% -tissues: 70-90% (intracellular, extracellular, urinary and gastrointestinal)
Water Functions -nutrient/waste transport -metabolic/chemical reactions -aids digestion/absorption -regulates body temp -regulates ionic concentrations -body structural component -lubricates/cushions
Non-Essential Water Sources -drinking water -water in/on feed (air dry feed has about 10%) -metabolic water (byproduct of many reactions, 5-10% of total water intake) -gastrointestinal secretions (mouth/saliva, true stomach/acid, duodenum/pancreatic & bile "juice")
Water Loss -urine -feces -respiration -perspiration -product (milk and eggs)
Effects of Water Restriction -reduced feed intake (immediate) -reduced production (especially high producers) -weight loss (dehydration)
Effects on Water Consumption -environmental temperature and humidity (heat stress) -dry matter (DM) intake -dietary factors (water content, fiber, salt, protein) -physiological state (lactation, etc.)
Water Consumption -unstressed, moderate temperature :water intake = 2-3 x DM intake :hot weather-can be 10 x DMI -average 1200 lb cow :hot summer day :eats 70lb of summer pasture :consumes 27 gallons (225lb) of water (grass and drink)
Effects on Water Quality -organoleptic (odor & taste) -physiochemical (pH, total dissolved solids, hardness) -toxic compounds (heavy metals, toxic minerals, hydorcarbons) -excess minerals (nitrates, sodium, sulfates, iron) -bacteria
Essential Water Sources -well (tank, waterers) -dugout -stream/pond -snow
Created by: ickbutt



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards