Waec 2017 Animal Husbandry Obj And Theory Answers – May/June Expo

*ANIMAL HUSBANDRY ANSWERS*

1a)

i)Not enough drinking water

ii)No feed or decreased feed intake

iii)Low calcium in the feed

iv)Newcastle disease (NCD)

v)Infectious bronchitis (IB)

vi)Poor management

1b)

i)Mouth

ii)Small intestines

iii)Large intestines

1c)

i)For food production e.g milk and meat

ii)They are used as source of power in the farm.

iii)They serve as source of hides.

iv)They serve as source of income to farmers

v)They provides raw materials for industry.

vi)Their horns are used for decoration.

1d)

i)Poultry Eggs are used for food

ii)They serve as raw materials for industry

iii)They serve as source of income for farmers.

iv)it serve as garden aid

v)It is a cure for the common hangover

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6a)

Animal improvement is a complex

process which involves modification of the genotype and the environment in an harmonious fashion.

6bi)

the bringing into the farm or a country high quality breeds of livestock with a high productive capacity and other good desirable characteristics from another farm or country.

6bii)

-Advantage-

i)Breeds which are not originally present in the home country are introduced.

ii)It leads to the absence of pests and diseases.

iii)It enhance greater productivity.

-Disadvantage-

i)It may introduce new disease to the area.

ii)It may introduce new pests to the area.

iii)It may not perform maximally.

6ci)

progeny Selection is the process of picking or selecting from a mixed population, those animals with breeding value as parents.

6cii)

i)It ensures that only the best naturally available animals are selected.

ii)Animals with desirable characteristics are selected.

iii)Animals with undesirablecharacteristics are detected and rejected.

iv)Animals from best breeds are bred for distribution.

v)It also reduced the spread or parasites associated with breeding stocks.

6d)

i)It is easier and less expensive than natural mating. Since the farmer is saved the expense of maintaining a herd or male animal.

ii)It is easier and cheaper to import the semen of exotic breeds rather than the male animals themselves.

iii)It is possible to service many female of different size leading to the production of many offspring.

3a )

Digestion is the breakdown of large insoluble

food

molecules into small water- soluble food

molecules so that

they can be absorbed into the watery blood

plasma .

3b )

pls In tabular form .

– Chicken –

i ) It has one stomach chamber .

ii) Does not have teeth in its mouth part

iii) It has crop

iv ) It cannot regurgitated

– Goat –

i ) It has four compartment stomach

ii) It have teeth in its mouth part .

iii) Does not have a crop .

iv ) It can regurgitated

3c )

i ) re – seeding and pest control

ii) controlled stocking and disease control

iii) rotational grazing and weed control

iv ) fertilizer application

v ) irrigation

3d )

i ) Glucose

ii) amino acids

iii) triglycerides

3e )

i ) Protein helps in building and repairing

muscles.

ii) It is needed to form new skin cells for

animals.

iii) It assists animals in creating body chemicals

like

hormones and enzymes that are needed for

normal

function .

iv ) It provides energy and keeps the immune

system

strong .

3f )

i ) trypsin

ii) chymotrypsin

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