Publications

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Publications & Reports

Publication InformationRelease DateFile Type

Preliminary report on dover sole rearing at the hatchery of the WFA site at Hunterston (Jan 74-Feb 75)

Unknown

This preliminary document reports the progress and problems of commissioning the new Dover sole hatchery, and running it for the first season. Despite delays outwith the Authority’s control nearly half the intended number of eggs was hatched. Survival to metamorphosis was considered to be normal (about 50%) but the weaning diets tried subsequently were not accepted and only 5% of the intended number of weaned fish was produced. Several shortcomings in the detail design and operation of the hatchery have been identified. Although the results of the first season are disappointing, six recommendations are made which, it is thought, should improve the chances of success in 1975. This report has been produced from a scanned original produced in February 1975 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.

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Study to forecast the commercial cost of farming plaice

Unknown

Much of the Authority’s early work in rearing marine fish was concentrated on plaice, however as the trials data accumulated over the late 60’s and early 70’s, it became apparent that, despite its suitability as a farm animal, the plaice could not under the market conditions prevailing recover its costs of production. This was demonstrated by a joint study with the Central Electricity Generating Board (ref 1) using 1971 data, which concluded that the estimated production cost of farmed plaice per ton, would be nine times the then value per ton of current trawler landings. This report has been produced from a scanned original produced in April 1977 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.

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Comparison of results in Turbot R & D to November 1978, with previous performance forecasts 1975 & 1977.

Not known

Early White Fish Authority experience of farming marine flatfish in sea cages was gained with plaice (1969 – 1973). From 1971 attention was increasingly turned to turbot, a species considered to be more attractive to farm commercially (Refs 1-3) and a number of small scale growth trials were performed with wild origin stock in order to obtain basic growth and husbandry data. 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.

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Frozen at Sea Blue Whiting 'Surimi' Production Trials

Unknown

Frozen at Sea Blue Whiting ‘Surimi’ Production Trials Tokyo – November 1978. Spring 1978 saw the successful production of Blue Whiting Surimi during the Stornoway processing trials conducted in conjunction with Nippon Suisan Kaisha of Japan (N.S.K.). The follow up marketing assessment by N.S.K., in Japan, proved blue whiting Surimi to be highly acceptable, with one major exception, which was product made from frozen at sea (FAS) material. This has since become a major problem in any future development, due to the Japanese company initially rejecting all product made from frozen raw material out of hand, even though sample results appeared to be adequate to meet their specifications. This report has been produced from a scanned original produced in December 1978 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.

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The Effects of Age on Vessel Performance and Fleet Capacity

C E Tucker

This report describes the development of mathematical models which demonstrates the effect of a vessel’s size, age and fishery on its performance, expressed in terms of income and returns to capital and labour. On the basis of these models, a fleet capacity simulation model, CAPSIM, has been developed, as described herein. This model is intended for use with simple available data to assess the impact on fleet capacity resulting from structural change. An example of its application to Humberside is presented. In addition, in order to aid the EEC, who have supported this work, descriptive material covering the UK, Belgian, Netherlands, FRG and Ireland is appended, and reported in terms suitable for use with this model. 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

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