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2020 WAEC Animal Husbandry Theory (a) Mention two organs each in each of the following parts of rabbit: (i) head;...

Animal Husbandry
WAEC 2020

(a) Mention two organs each in each of the following parts of rabbit: (i) head; (ii) thorax; (i) abdomen.

(b) State one function of each of the following organs in farm animals: (i) caecum; (1) gizzard; (1) crop: (iv) rumen; (v) lung

(C) State six practical ways of checking malnutrition in livestock production.

(d) Mention three examples of non-traditional farm animals.

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Explanation

(a) Organs in Parts of Rabbit:

(i) Head: Tongue, Eye, ear, lips, teeth, nose/nostril, Mouth/oral cavity/buccal cavity, Brain, Skin, Hair, Skull

(ii) Thorax: Lung, Heart, Oesophagus, Trachea, Diaphragm, Thymus.

(iii) Abdomen: -Small intestine - Large intestine -Pancreas -Spleen, Bladder, Uterus, Fallopian tube/oviduct, Ovaries, Kidney, Liver, Stomach, Caecum, Colon

 

(b) Functions of Organs:

(i) Caecum:

  • It aids fermentation of fibre. 
  • Absorption of fluid/salt/vitamins.
  • Houses microbes which produce cellulase for microbial digestion.
  • Site where digestion of forages take place in pseudoruminants.

(ii) Gizzard:

  • Contains grit/stones for grinding feed in poultry/aids digestion.
  • Stores feed in poultry/aids digestion
  • Stores feed temporarily/regulation of feed flow.
  • Mixes digestive enzymes with the feed/chemical degradation

(ii) Crop:

  • Hunger sensation centre.
  • Site for temporary storage of food feed/regulation of feed flow.
  • Allows feed to be moistened for digestion/aids digestion.
  • Acidification of feed.

(iv) Rumen:

  • It facilitates rumination.
  • Elimination of gases through eructation.
  • Site for fermentation of fibrous feed.
  • Houses microbes which facilitates digestion of fibre.
  • Production of volatile fatty acids.
  • Synthesis of vitamin B complex.
  • Receives feed.
  • It stores feed temporarily.
  • Absorption of volatile fatty acids.
  • Site of synthesis of microbial protein.

(v) Lung:

  • Helps in intake of oxygen/breathing/respiration.
  • Provide surface for gaseous exchange
  • Helps in the elimination of carbon dioxide.

(c) Practical Way of Checking Malnutrition in Livestock Production :

  • Deworming.
  • Giving supplementary feed
  • feeding weaker animals separately
  • use of fortified feed
  • adjusting stocking density
  • feeding the animals adlibitum /without restriction
  • Provision of quality feed.
  • Avoid overfeeding/underfeeding
  • Protecting animals from toxic plants.
  • Provision of salt lick.
  • Use of additives to stimulate feed intake. 
  • Provision of good quality water
  • Balanced ration/diet

 

(d) Examples of Non-traditional farm animals. - Silkworm - Horse-Camel - Donkey -Quails -Grasscutter - Rabbit -Honey bees. -Geese Snail - Ducks -Guinea peas Pigeons. 


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