Author Topic: 2017/2018 WAEC WASSCE Fisherie OBJ Essay Theory Questions And Answer Expo/Runs free (Read 1613 times)

JEFFREY96 · « **on:** March 23, 2017, 01:14:54 pm »

Acurate Fish-Obj
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1a
-increase in economy
-it encourages farmers
-serve as youth empowerment
-Improve in good drugs that refresh the body I.e cod liver oil....and other fish drugs

2a)
i)do not transport brood stock in bad water
ii)do not rough handle brood sock
iii)disinfect brood stock before allowing them into your hatchery,or brood stock pond
iv)do not transport brood stock in a crowded condition
2b)
i)digging out pit
ii)constructing manual barriers
iii)disinfecting the water
iv)getting water supply
v)cult
vi)trenching the pond
2ci)
high temperature increases the hotnesss of water and reduce water oxygen
2cii)
high turbidity reduces the intensity of light
Getting into the fish pond
2ciii)
low dissolve oxygen causes many difects in fish which include asphyxiation,low food intake
2d)
i)use of hook and line
ii)use of scoop net

3a)
i)Agricultural limestone
ii)Basic slag
iii)Laked lime
iv) Quick lime
v) Liquid lime

4a)
Aquaculture refers to the
breeding, rearing, and harvesting of
plants and animals in all types of water
environments including ponds, rivers,
lakes, and the ocean.

4b
Parasites and diseases
Hybridisation
Rearing
Natural spawning

4c
TheSpot(Leiostomus xanthurus) orNorfolk spot [2]is a small short-lived saltwater fish in the family Sciaenidae. The speciesinhabits estuaryand coastal waters from Massachusettsto Texas, and derives its name from the prominent dark spot behind each gill. It is the only speciesin the genusLeiostomus. Spot are frequently caught by recreational anglersand are good to eat

4ciii)-Fishmeal
Fish oil.
-Land-animal protein and oil ingredients.
-Vegetable protein and oil ingredients
-Vitamins and minerals. -Astaxanthin.

5di )
Latency period is the period between the exposure and
infection of disease
5dii )
gravid fish are female fishes producing eggsv) boreholes

5a )
Cannibalism in fish is the act or practices aming fishes eating
the fish or internal organs of other fishes
5aii )
i)by sorting
ii) proper stocking of fishies to avoid overcerian

5ci)Fish stocking is the practice of raising fish in a hatchery and releasing them into a river, lake, or the ocean to supplement existing populations, or to create a population where none exists. Stocking may be done for the benefit of commercial, recreational, or tribal fishing, but may also be done to restore or increase a population of threatened or endangered fish in a body of water closed to fishing.

5b)
i)reducing fish losses through cannibalism;
ii)improving supplementary feeding efficiency through adequate food ration;
iii)increasing the accuracy of stock estimates for monitoring

menegbobakel · « **Reply #1 on:** March 24, 2017, 07:47:19 am »

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yemax1 · « **Reply #2 on:** March 24, 2017, 08:12:25 am »

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Author Topic: 2017/2018 WAEC WASSCE Fisherie OBJ Essay Theory Questions And Answer Expo/Runs free (Read 1613 times)

JEFFREY96

2017/2018 WAEC WASSCE Fisherie OBJ Essay Theory Questions And Answer Expo/Runs free

menegbobakel

Re: 2017/2018 WAEC WASSCE Fisherie OBJ Essay Theory Questions And Answer Expo/Runs free

yemax1

Re: 2017/2018 WAEC WASSCE Fisherie OBJ Essay Theory Questions And Answer Expo/Runs free

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