Create an account
based on environment, nutrition, genetics, and heard health. All four components need to be balanced to be optimal
consumption has increased dramatically from 1909-2005 because it has been proactive in ways to increase consumption
to remain competitive, producers must specialize and get new ______. (it will play huge role in agriculture's future
sum of all processes by which an organism takes in and assimilates food, including digestion and absorption for promoting growth, maintenance, and reproduction.
portion of food nutrients which supports bodily functions which go on whether or not new tissues or products are being formed
passage of food or nutrients from the gastrointestinal tract into the bloodstream and its distribution (villae in small intestines)
sum of all biochemical processes that nutrients undergo to furnish energy and build new tissue
most abundant carb and primary plant structural component. Ruminants CAN use it. Nonruminants CAN'T digest it
body cannot produce enough of them to meet daily requirements so must be consumed
determines content of major nutrients (dry matter, crude protein, crude fiber, ether extract (fat), ash, nitrogen free extract)
six major nutrients in proximate analysis
1) dry matter 2) crude protein 3) crude fiber 4) ether extract (fat) 5) ash 6) nitrogen free extract
assumptions of dry matter
1) wieght loss during drying is only water
2) no info on dry matter composition
3) most valuable in determining ingredient cost
assumptions of protein
1) all nitrogen is them
2) they have a constant nitrogen percent
3) no info on availability of nitrogen (digestibility)
4) no info on quality of protein (necessary/not)
assumptions of ether extract
1) all either soluble material is fat
2) no info on individual fatty acid (long, short, sat, unsat)
analysis is designed to simulate body's natural digestion process. weight of sample loss during burning of ash.
assumptions of crude fiber
1) all material is fiber (some stuff could dissolve so would be underestimated
2) no indication on individual fiber
nitrogen free extract (NFE)
calculations of sugar and starches left over from other analyses. 100- % off all other procedures.
limitations of proximate analysis
1) sampling (getting a representative sample not stored to long and not only from certain area of feed
2) no indication of toxic compounds
3) no indication of individual nutrients
4) no indication of nutrient availability (digestible)
acid detergent fiber/ neutral detergent fiber (Can Soest Fiber Analysis
tells how much of each fiber there is. distinguishes between cell wall vs. cell contents
Van Soest Fiber Analysis's greatest application is in determing ____ (high producing dairy cattle)
neutral detergent fiber. cellulose, hemicellulose, lignin.
good indicator of voluntary feed intake (higher % eat less)
acid detergent fiber. cellulose, lignin. indicator of forage digestibility (higher %, less digestibility)
near infrared reflectance spectroscopy (NIRS)
different mollecular bonds reflect and absorb dif wavelengths. needs lots of samples for calibration
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together