Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
5 Cards in this Set
- Front
- Back
|
What are the implications of feeding a pregastric fermenter? |
when you feed the animal, you are really feeding the microbes; the animal only gets what passes through |
|
|
What does it mean that the rumen is dynamic? |
lots of different species of bacteria, protezoa, and fungi working together
microbes are anarobic |
|
|
5 rumen buffering mechanisms |
- VFA absorption dependent on pH; VFA absorb along w/ a H+ - saliva contains bicarbonate which is a buffer - rumination and contractions stimulate mixing, burping, salivation, and papillae development - water intake flushes problem microbes and VFAs to the abomasum - protozoa can sequester starch and keep it from Strep bovis |
|
|
VFA |
acetate: primary energy source
propionate: glucose precursor |
|
|
why are cows hypoglycemic? |
rely on propionate and gluconeogenic amino acids as a source of glucose; any glucose they consume is going to be consumed by the rumen microbes |
