Students from the Aquatic Resource Management MSc programme visited us on a rather cold and dank afternoon last week. They were on a tour of Hampshire fishfarms organised by Howard Day to look at the environmental issues associated with fish culture. Despite the lack of sunshine we still managed to be smiling at the end of the visit
What did they learn?
Here are a few questions.
Who do you need to obtain permission or a licence from to set up a cyprinid fish farm?
Why was the farm located where it was!?
How are the ponds prepared for the production of cyprinid fry?
How much weight of oxygen is typically held in a pond 50m long x 20m wide x 1m deep?
If a pond of that size is holding 250kg of fish stock, what weight of oxygen will the fish require for respiration?
What daily weight of food is fed @ 2% body weight ration?
What daily weight of oxygen will be required for the fish to metabolise this food?
How is oxygen generated in the pond to replace the weight of oxygen being consumed?
Why is the aeration run at night?
What are the main benefits of an aeration system?
What is the (approx) maximum daily weight of oxygen that algae can produce from a 1000 square meter pond?
Apart from the fish, what other organisms have an major oxygen demand in a pond on the fish farm?
I will email Michael Chadwick the course director the answers………………