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Digestion in Ruminants & Rodents
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Slide 18

Digestion in Ruminants & Rodents

Slide 19

Digestion in Ruminants & Rodents

Slide 20

Abomasum

Abomasum

- true stomach of the ruminants

- gastric juice containing digestive enzymes

- HCl and pepsin

Ruminants

Slide 21

Digestion in Ruminants & Rodents

Slide 22

Flow of food in ruminant

Flow of food in ruminant

mouth

oesophagus

rumen

mouth

omasum

reticulum

abomasum

regurgitation

fermentation

curd

swallow

swallow

- H2O

chyme

Slide 23

Flow of food in ruminant

Slide 24

rumen

rumen

reticulum

abomasum

omasum

Slide 25

Flow of food in ruminant

Slide 26

Digestive System of Rodents

Digestive System of Rodents

Their caecum and appendix are enlarged to store the cellulase producing bacteria

Food pass the alimentary canal twice

- first as food

- then as soft faeces

Slide 27

Soft and watery faeces usually produced at night

Soft and watery faeces usually produced at night

Eaten again

Pass out as hard and dry faeces during the day

Slide 28

Rat digestive system

Rat digestive system

Slide 29

Rat digestive system

Slide 30

Rat digestive system

Slide 31

Rat digestive system

Slide 32

Rat digestive system

Slide 33

Ratís caecum

Ratís caecum

Slide 34

Flow of food in rodents

Flow of food in rodents

mouth

oesophagus

stomach

caecum

anus

Small intestine

swallow

Re-eat the faeces to absorb more nutrient

Digest cellulose

Slide 35

Eaten again? Why??

Eaten again? Why??

to enable the animals to absorb the products of bacterial breakdown

allow rodent to recover the nutrients initially lost with the faeces

Slide 36

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