(46) Fermentative Digestion

Question 1

1. What kind of fermenter is the sheep?

Answer 1

1. pregastric fermenter

Question 2

1. What kind of fermenter is the kangaroo?
2. does it have a rumen?

Answer 2

1. pre-gastric fermentation
2. no

Question 3

1. What kind of fermenter is the horse?
2. What kind of colon do they have?

Answer 3

1. hindgut fermenter
2. sacculated colon

Question 4

1. What kind of fermenter is pig?
2. colon is what?

Answer 4

1. hindgut fermenter
2. sacculated colon (increased area for micro fermentation vats)

Question 5

1. What kind of fermenters are cats and dogs?
2. colon is what?

Answer 5

1. hindgut fermenter
2. unsacculated

Question 6

1. Rabbit?
2. has a what?
3. what other animal is like this?

Answer 6

1. hindgut fermenter
2. cecum
3. rat

Question 7

take a gando

Question 8

(Removal of End products)

1. VFA diffusion - undissociated form, passive or active?
2. at normal rumen and hindgut pH, what amount of VFA are undissociated?
3. Removal of undissociated VFAs allows what?
4. What is a major factor govenring rate of absoprtion?
5. put these in order

proprionate, butyrate, acetate

Answer 8

1. passive

CH3COO- + H+ (dissociated) <–> CH3COOH (undissociated)

2. small amounts
3. formation of more undissociated VFAs
4. luminal concentration

acetate > proprionate > butyrate

Question 9

(Intestinal Microorganisms)

(Indigenous Microorganisms)

1. grow aerboically or anaerobically?
2. always found in adult animal
3. coloninze specific areas of what?
4. maintain stable population
5. contribute to what of host?

Answer 9

1. anaerobically
2. GI tract
3. nutrient economy

Question 10

(Intestianl Microorganisms)

(Non-Indigenous Microorganisms)

1. characteristsic of habitat?
2. occupy niche in a habitat vacated by what?
3. may cause what in host?

Answer 10

1. no - dormant form - just passing through

2, indigenous microbes

3. disease

Question 11

I would be a little suprised if he wants us to know this - but at least take a look

Question 12

take a gander

Answer 12

at this too

Question 13

(BActerial Ecology in the Rumen)

give percentage

1. free in liquid phase of digesta?
2. attached to food particles?
3. attached to ruminal epithelium?
4. attached to protozoa?

Answer 13

1. 30%
2. 65%
3. ruminal epithelium 3%
4. protozoa 2%

Question 14

think there was already something similar to this