Assam ASSEB Higher Secondary Skill Subject Fishery Sciences case studies
Assam ASSEB Higher Secondary Skill Subject Fishery Sciences · Put your knowledge to work in context.
Fishery Sciences is one of the skill subjects offered at the Higher Secondary level under the Assam Higher Secondary Education Council (ASSEB). It is a school-stage vocational credential, not a university degree or a licence. The Assam ASSEB Higher Secondary Skill Subject Fishery Sciences case studies are 5 cases and about 4,543 words.
1Dawn Oxygen Crash in a Manured Composite Carp Pond
A composite carp pond of 0.8 ha and average depth 1.5 m in Nagaon district was stocked three months ago with 8,000 fingerlings of rohu, catla and mrigal. Two days before the incident the farmer spread 400 kg of raw cattle dung and 25 kg of urea.
932 words, about 5 min2Failed Induced Spawning in a Catla Hatchery
A carp hatchery in Kamrup holds 8 female catla of 3.5–4.5 kg and 12 males. The broodstock were reared on rice bran and oil cake alone, with no vitamin or mineral mix, and were transported 60 km in open drums the previous afternoon.
933 words, about 5 min3Mortality and Skin Lesions in a Magur Pond After Unquarantined Stocking
A farmer in Barpeta holds 4,000 Clarias magur juveniles averaging 40 g in a 0.08 ha pond, 1.2 m deep. Ten days ago he added 300 wild-caught catfish from a nearby beel without any quarantine.
898 words, about 4 min4Routing a Harvest When Ice, Distance and a Spoiled Lot Constrain Choices
A self-help group in Dhemaji harvests 400 kg of rohu from a 0.6 ha pond on a day when the local wholesale market will absorb only about 120 kg at ₹110/kg. Ambient temperature is 33 °C.
875 words, about 4 min5Testing a Biofloc Business Plan Before Scaling Up
A young entrepreneur in Sonitpur has installed six biofloc tanks of 10,000 litres each, a total of 60 m³, and plans to stock 200 tilapia fry per m³, that is 12,000 fish. Inputs quoted: seed at ₹3 per fry; feed at ₹45/kg with an expected feed conversion ratio of 1.5; expected survival 80%; harvest weight 500 g; farm-gate price ₹150/kg.
905 words, about 5 min