Documents | Seafish

UK Seafood Trade Summary 2019

This factsheet contains key statistics relating to the UK’s overall trade of seafood in 2019.

Aquaculture Common Issues Group. News alert. May 2021.

May news alert sent to ACIG subscribers on 3 June 2021.

Investigation of the Relative Fishing Effort exerted by Towed Demersal Gears on North Sea Human Consumption Species

The main objective of this project was to investigate the influence of vessel and gear parameters upon the Relative Fishing Power of Danish, Scottish, English and Belgian fishing vessels operating towed gears in ICES IVb and IVc to catch cod, haddock, whiting, plaice or sole.

Trials to Compare the Thermal Performance of a New Design of CRT Non-reusable Double Walled Fibreboard Fish Box with Expanded Polystyrene and Single Walled Fibreboard Boxes

Trials were carried out to compare the thermal properties of expanded polystyrene (EPS), single walled fibreboard (SWF) and double walled fibreboard (DWF) boxes. The boxes were tested in an environmental chamber and fish fillet temperature in each box was recorded for two time-temperature profiles. The first profile represented an interrupted chilled chain distribution over 66 hours, such as by airfreight and the second profile represented a controlled chilled distribution of 72 hours such as by road transport. Fillets in each box were chilled using a single frozen gel-ice pack placed on top of the fillets, or using ice. The EPS box was most effective at maintaining low fillet temperature for both temperature profiles and cooling methods. The DWF box had similar but slightly better insulative properties than the SWF box. Ice chilling of fillets was more effective than a single gel-ice pack at maintaining low fillet temperatures for both temperature profiles. At the end of the trials using ice, the amount of melt water produced exceeded the capacity of the absorbent pad used. The ratio of ice used and/or absorbent pad capacity needs careful consideration to prevent fillets from soaking in melt water in non-draining boxes. Where fish is distributed in an uncontrolled chilled distribution chain, boxes with greater insulative properties, such as EPS would be advisable in order to maintain low product temperatures. Where fish is distributed in a strictly controlled distribution chain, it would be beneficial to use boxes with less insulation, to allow chill temperatures to influence product temperatures

Mussel Purification Laboratory Scale Trials of Deep Stack Purification Combining Re-use of Artificial Seawater and Direct Aeration

To make large scale mussel purification more cost effective and to improve its control, Seafish has developed a modular, deep stacking purification tank in which artificial seawater is re-used many times. Having demonstrated in principle that the system would work, as described in TR's 312 and 339, Seafish has now conducted trials with a deep stacking purification tank using direct aearation instead of water circulation to further decrease the costs of the system. A direct aearation system is cheaper as it does not need expensive pumping equipment.

The Use of Square Mesh Selector Panels as a Means of Improving Selectivity of Demersal Towed Fishing Gear

Three series of trials with square mesh windows are described, all of which took place in the first half of 1990 off the NE Scotland, Orkney and Hebrides. The trials were a combination of comparative hauls and film using the DAFS-RCTV. The first on 'CLUPEA' showed clearly the benefits of the square mesh in releasing undersized fish and gave confidence to proceed to a commercial trial on the seiner 'KESTREL'. Finally more RCTV film and further refinements were made on a trial on the 'ST. KILDA'. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

The Development of a Suitable Synthetic Replacement for the Traditional Cotton Drift Nets as Utilised in the Cornish Pilchard Fishery

This report was the second in a series of 3 reports on drift netting for pilchards. Drift netting for pilchards is an environmentally friendly fishing method that is highly energy efficient. The fishery had ceased to be viable in the 1950s due to economic factors. If redeveloped, the fishery could bring considerable benefits though both employment and tourism. The report concluded that the old style cotton nets could indeed be replaced with a synthetic equivalent, and that the correct stiffness of the twine was identified as being very important in allowing pilchard removal without damage.

Fishing Gear Trials relating to the Development of a Suitable synthetic Replacement for the Traditional Cotton Drift Nets as Utilised in the Cornish Pilchard Fishery. (Sardina Piolchardus)

This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

Investigation of Cod Hatchery Techniques

This report provides technical details of rearing methods with a view to future viable cod farming development. Live feeding and weaning are emphasised, broodstock maintenance and spawning are considered. This report has been produced from a scanned original and may therefore contain some formatting and other inaccuracies. In cases where this affects the technical content, a paper copy of the original report can still be obtained from Seafish.

1569243102-acig_sept2019_mowianglesey.pdf

The Results of a Water and Effluent Study carried out at A. Darnell Limited in November 1997

In the near future new environmental legislation will add greatly to the cost and difficulty of disposing of waste water. This will present a significant problem to the fish industry. Seafish has commissioned a number of water audits in fish processing companies, looking at water usage and effluent production, with a view to minimising both.

Initial Trials to Extend the Storage life of Cod and mackerel using Sodium Hypochlorite or Ozone to Treat Ice and Refrigerated Seawater

Despite diminishing fish stocks and the higher prices which can be attained for top quality fish, poor quality fish is still being landed into UK ports. As well as addressing the more traditional handling problems Seafish has identified the use of techniques such as ozonation and chlorination which may enable the improvement of fish quality by reducing the rate of bacterial spoilage. Trials were carried out to determine the effect of sodium hypochlorite and ozone on the quality of cod and mackerel in treated ice or RSW. Holding mackerel in RSW treated with sodium hypochlorite reduced the rate of bacterial spoilage by over 50%; little improvement was seen in the quality of cod.

Search results

Filter search results