Ruminants Digestion Flashcards
what does the rumen absorb
VFA’s from fermentation and NH4 to maintain pH
reticulum lining type
hexagon
reticulum function
mechanical breakdown and microbial femrantation
omasum function
absorb fluid, expel solids to abomasum
abomasum function
release HCL and pepsinogen
duodenum function
neutralizes stomach acid
jejenum function
absorption
illeum function
absorbs remaining nutrients and vit B12
three end products of microbes
VFA - energy source
ammonia - form microbial protein
gasses - waste products
cell wall contents in carbs
cellulose and hemicellulose
cell contents in carbs
starch and water soluble sugars
threew short chain fatty acids in gut
acetate
butyrate
propionate
acetate function
synthesis of fatty acids in adipose
butyrate function
energy to rumen wall
propionate
provides energy via conversion of blood glucose in liver
UDP in abomasum
undegraded dietary proteins - protein not broekn down in rumen then passed to abomasum
what helps microbes in rumen grow
nitrogen and amino acids
what proteins can the rumen not digest
Undegraded dietary proteins (UDP) and microbial crude proteins (MCP)
lipid digestion location and why
most fats are triglycerides and cannot be digested in rumen
fats saturated in rumen
FME and ERDP correlation
FME - fermentable metabolisable energy
ERDP - effective rumen degradable protien
need to be equal as they balance each other out in rumen
energy consumed calculation
= DM x MJ/kg DM
two main nutrition aspects in neonate milk
crude fat and crude protein
how does food move back up to mouth for remastication
- reticulum contracts = floods cardia with food
- antiperistaltic contraction = food drawn into oesphagus
need expansion of thorax and closed upper airway
what brain stem controls ruminant stomach
vagus
(CN X)
