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2019 WAEC Animal Husbandry Theory (a) Mention FIVE advantages and THREE Disadvantages of castration in Livestock production (b) (i) Draw...

Animal Husbandry
WAEC 2019

(a) Mention FIVE advantages and THREE Disadvantages of castration in Livestock production

(b) (i) Draw and label FIVE parts of the digestive system of a domestic fowl
     (ii) State ONE function of each of the parts labelled in (b) (i)

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Explanation

(a) Advantages of Castration in Livestock Production:

-Prevents indiscriminate mating/breeding control.

-Increased animal weight/growth improvement.

-Improved meat quality.

- Animals docile for easy handling.

-Removal of male odour

- Improvement of market value.

 

Disadvantages of Castration in Livestock Production:

- Blood may be lost in the process

- If not well treated, wound may persist.

- There could be excess deposit of fat.

- Desirable traits may be lost.

- It is stressful/painful to the animal.

- Death may occur.

 

 

(b) (i) Open Photo

 

(ii) Functions of Parts:

Beak: - picks the feed. - moistens the feed:

Oesophagus/gullet/gut/throat: - Passage for feed from mouth to Crop:

Crop - Temporary storage of feed -Further moistening of feed.

Proventriculus:- Secretion of gastric juice/digestive enzyme;-Digestion of proteins

Ventriculus:-Mixing/churning of feed.

Small intestine:-Digestion of feed. - Secretion of digestive enzymes. -Absorption of nutrients.

Large intestines: -Absorption of water.

Pancreas: - Secretion of pancreatic juice.

Liver: - Secretion of bile.

Gall bladder: - Storage of bile.

Caeca/Caecum: - Microbial fermentation, - Absorption of water.

Rectum: - Absorption of water. -Collection of faecal material.

Cloaca/anus/vent: - Passage for droppings-

Gizzard:-Grinding of feed. 


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