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 WEEK 3                    CLASSIFICATION OF ANIMALS
TOPIC:Â CLASSIFICATION OF ANIMALS
Animals are classified according to diverse purposes like habitat, relationship with man, mode of feeding, to mention but a few.
Animal classified based on habitat e.g., terrestrial animal and aquatic animal etc. those classified according to relationship with man are wild animals and domestic animals.
With regard to domestic animals, which is going to be our focus in these studies?
A domestic animal is animal that man has been able to tamed, control and has been freely reproducing under his supervision. Examples of domestic animals include Goat, Sheep, Camel, Donkey rabbit, pig, Cattle, Poultry, bee, grass cutter, snail, fishes.
The domesticated animal can further be classified based on their mode of nutrition.
- Non – ruminant animals
- Ruminant animals.
DEFINITION OF MONOGASTRIC OR NON –RUMINANT ANIMALS
These are animals which possess only one stomach and do not ruminate. They have simple stomach and cannot digest cellulose and fibre properly.eg pig rabbit poultry birds.
DEFINITION OF POLY-GASTRIC OR RUMINANT ANIMAL.
These are farm animals that possess four stomach chambers hence can ruminate. The stomach compartments are rumen, reticulum omasum and abomasum’s.
Differences between mono-gastric and poly-gastric animal.
| Mono-gastric animal                                | poly-gastric animal |
| Have simple stomach | have complex stomach |
| Do not chew cud | chew cud –regurgitate |
| Do not produce enzyme cellulose | produce enzyme cellulase |
| No rumen, no bacteria | rumen contains bacteria |
| Feed on non-fibres – concentrate | feed on fibre- roughage |
| Secrete enzyme amylase | do not secrete enzyme amylase |
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