WAEC 2021 - ANIMAL HUSBANDRY ANSWER

ANIMAL HUSBANDRY
1-10: CAAADCDBBA
11-20: BACBADDBAC
21-30: ABBCCBDABD
31-40: ABCCDABBBD


(1a)
(i) Keep provision for the entrance of fresh air.
(ii) Provision of clean, fresh water in front of the birds at least twice daily.
(iii) Adjustment of the temperature as per the requirement of the chicks.
(iv) Daily inspection of the condition of birds and their faeces for any sort of abnormality.
(v) Keeping of the brooder in such a place that cold wind and rain does not get in.

(1b)
Deworming: This is the getting rid or expelling of parasitic worms within the birds' system by giving the birds anthelmintic drugs like dewormer.

(ii) Culling: This is the identification and removal of birds that do not possess the qualities for giving enough benefit in return for their culture.

(iii) Debeaking: This is the partial removal of the beak of poultry to avoid cannibalism.

(iv)Delousing: This is defined as the use of any Physical or chemical means to get rid of lice.

(1c)
(i) Drooped wings.
(ii) Feather loss
(iii) Abnormal droppings.
(iv) Dull or closed eyes

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(4a)
(i) It serves as a source of income
(ii) It generates high-quality food products such as meat, egg, milk, cheese
(iii) It generates employment opportunities
(iv) It can help a country to generate foreign exchange earnings through the export of livestock products.

(4bi)
[Pick Any SIX]
(i) Mouth
(ii) Vestibule
(iii) Oesophagus
(iv) Stomach
(v) Small intestine
(vi) Caecum
(vii) Large intestine
(viii) Anus

(4bii)
[Pick Any TWO]
(i) It helps in absortption of food eg: Small intestine
(ii) It helps in secretion of digestve enzymes
(iii) Stomach as part of alimentary canal secretes gastric juice containing hydrochloric acid which destroys harmful bacteria in the stomach.

(4ci)
[Pick Any FOUR]
(i) Liver helps with bile production
(ii) Excretion of bilirubin, cholesterol and hormones
(iii) Metabolism of fats, proteins, and carbohydrates.
(iv) It helps in enzyme activation.
(vi) Storage of glycogen, vitamins, and minerals.
(vii) Synthesis of plasma proteins, such as albumin, and clotting factors
(viii) Blood detoxification and purification

(4cii)
(i) Liver fluke
(ii) Schistosoma

(4d)
[Piick Any TWO]
(i) Goat has four-compartment stomach while rabbits have a monogastric digestive system
(ii) Goat posseses reticulum while it is absence in a rabbit
(iii) Goat has rumen while rabbit does not.

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(5ai)
Scalding: This is the process of treating carcasses with hot water or steam to loosen the hair or feather in the follicle to aid their removal .

(5aii)
Singeing: This is a major process by which fur on the skin of the animals are removed making the hide of the carcass ready for consumption and also evoke flavors in the meat which are acceptable to the consumer.

(5aiii)
Evisceration: This is a method of autotomy involving the removal of internal organs used by animals as a defensive strategy.

(5b)
[Pick Any FOUR]
(i) Media/advertiser
(ii) Exporters
(iii) Wholesaler
(iv) Co-operative society
(v) Market boards
(vi) Retailers

(5c)
(i) Promotion
(ii) product management
(iii) market research
(iv) matching products to consumers.
(v) Distribution function

(5d)
(i) Dung stage
(ii) Pasture stage
(iii) Host stage

(5e)
(i) Selection
(ii) Breeding

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(6ai)
Brooding is defined as the management of chicks which involves the natural or artificial provision of heat and other necessary care to chicks until they are about six weeks old

(6aii)
(i) Proper sanitation
(ii) Ensuring of adequate light
(iii) Adequate feeding
(iv) Medication and vaccination


(6b)
(i) Blood loss which, if substantial, can lead to anaemia and death.
(ii) It causes diarrhoea which, if severe, can lead also to death.
(iii) It reduces appetite of farm animals, resulting in debilitated animals that are more susceptible to other diseases.
(iv) Internal parasites often interfere with digestion and assimilation of food, causing poor growth.

(6c)
(i) Avoid grazing high risk pastures
(ii) Avoid co-grazing
(iii) Regular faecal samples should be taken from sheep to determine the liver fluke burden on the farm

(6di)
Artificial insemination is the process of collecting sperm cells from a male animal and manually depositing them into the reproductive tract of a female.

(6dii)
(i) There is no need of maintenance of breeding bull for a herd; hence the cost of maintenance of breeding bull is saved.
(ii) It prevents the spread of certain diseases and sterility due to genital diseases
(iii) It increases the rate of conception
(iv) It helps in maintaining the accurate breeding records.





WAEC 2021 - FISHERY ANSWER

FISHERIES OBJ
1-10: ACDDCBBCDC
11-20: DCCAAAABBA
21-30: ACABBCCBCC
31-40: ABABDCABDB

(1a)
(i)plastic bags or 5-gallon buckets with water from the tank to transport your broodstock.
(ii)Make sure the bag/bucket has enough air for your brood stock .
(iii)Take any plants from the tank and place them in bags with water from the tank to keep good bacteria on them alive.
(iv)Try to save 80% of the water from your tank

(1b)
(i)to help reduce the level of shock
(ii)To help curtail harsh weather conditions
(iii)To reduce death rate and maximize survival

(1c)
(i)fertilization
(ii)Incubation
(iii)hatching of eggs
(iv)Overprim

(1d)
(i)Eradication of predatory animals
(ii)Eradication of insect
(iii)Eradication of aquatic weeds
(iv)Assessment of food in nursery

(1e)
(i)water level
(ii)Level of rainfall
(iii)Water temperature
(iv)Turbidity
(v)Ph level of the water

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(2ai)
Integrated fish farming is a system of producing fish in combination with other agricultural/livestock farming operations centered around the fish pond.

(2aii)
(i)Fish with pig
(ii)Fish with sugarcane
(iii)Fish with vegetables
(iv)Fish with snail

(2bi)
(i)selling fish to the processing industry,
(ii)grading of fish
(iii)processing fish themselves,
(iv)selling to the world

(2bii)
(i)jute bags
(ii)mat bags
(iii)cartons

(2ci)
(i)PREPARE THE SITE.
(ii)PEG OUT THE POND AREA.
(iii)CONSTRUCT CLAY CORES.
(iv)EXCAVATE THE POND AND CONSTRUCT DYKES.
(v)INSTALL DRAINAGE SYSTEM.

(2cii)
(i)Spade
(ii)Digger

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(4a)
Stocking rate of a fish pond is the process of introducing selected, culturable, compatible, and fast-growing fish seed into ponds for growing.

(4b)
(i) Total removal of the polluted water.
(ii) Cleaning of the pond
(iii) Growing of water plants
(iv) Control algae growth.
(v) Repair of leaks.

(4ci)
It shows that there is deficiency of oxygen and pollution of the water body due to algae bloom

(4cii)
(i) Increase in nutrient in the body of the water
(ii) Algae outgrowth
(iii) Oxygen deficiency
(iv) Low light penetration

(4ciii)
(i) It may lead to death
(ii) It may lead to congenital disease of the Clarias spp
(iii) It leads restlessness of the fish due to oxygen deficiency
(iv) It can cause loss of weight

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(6a)
(i) Hatcheries can provide food sources to carnivorous fish, enabling their continued supply.
(ii) Hatcheries allow for the replenishment of fish in sea waters.
(iii) The process of running fish hatcheries is very labor-intensive.
(iv) Hatcheries protect aquatic species from disappearing from ecosystems.

(6b)
(i) Raceways offer a much greater ability to observe the fish.
(ii) Raceways can be easily built in series.
(iii) It is Less labour intensive to cleaning and feeding.
(iv)It allows for Easy monitoring of fish.

(6ci)
Hatching trough: They are used for the hatching of channel catfish eggs and help in eggs adhering to nest material or adhering in a mass to each other.

(6cii)
Happa: they are use for generating fingerlings and also The mesh size is such that the fry or fish inside can not escape.

(6ciii)
Syringe: It is use to deflate the swim bladder from a fish that’s been brought quickly out of deep water and can’t swim back down.

(6civ)
Microscope: It is use to examine scrapes from the fish skin

(6cv)
Aquarium tank: It is use to allow the fish culturist to easily manage stocks and to exert

(6d)
(i)Prawn shell waste
(ii)Groundnut oil cake
(iii)Wheat bran

(6e)
(i)phosphorus
(ii)Nitrogen
(iii)Carbonaceou Biochemical Oxygen Demand
(iv)Die-off and decomposition

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WAEC 2021 - OFFICE PRACTICE ANSWER


(5ai)
Salary: A salary is the money paid each month by their employer, especially when the are in a profession such as teaching, law or medicine.

(5aii)
Wages: Wages are form of monetary compensation for employees. They are paid according to the amount of time worked by the employee

(5aiii)
Time rate: Time rates are use when employees are paid for the amount of time they spend at work

(5aiv)
Piece rate: Piece rate gives a payment for each item produced. It is therefore the easiest way for a business to ensure that employees are paid for the amount of work done

(5av)
Commission: Commission is a service charge assessed by a broker or investment advisor for providing advice or handling purchases or sales of security for a client.

(5b)
(i) An office procedure reduces then general cost of operation.
(ii) It allows for effective training of new staff
(iii) It enhances performance of old staff
(iv) A good office procedure facilitates better flow of work in the office and between department

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(7a)
Filing means keeping documents in a safe place and being able to find them easily and quickly. The purpose of filing is to locate filed documents easily. They are readily available when needed.

(7b)
(i) Information to identify the case
(ii) Referral source
(iii) Allegation details

(7ci)
Suitable title: A suitable title has to be provided to each report according to the nature of the content.

(7cii)
Simple: A report shout be reachable by an ordinary layman and in known language

(7ciii)
Promptness: A report should be prepared and submitted with short span of time or time stipulated by the request letter

(7civ)
Comparability: Sometimes a report is prepared with some comparative information

(7cv)
Consistency: A report should be prepared for many years from the same type of information and statistical data

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