9 results
Industry
PROJECT NUMBER • 1989-063
PROJECT STATUS:
COMPLETED

Evaluation of triploid Sydney rock oysters (Saccostrea commercialis) on commercial leases in NSW and triploid Pacific oysters (Crassostrea gigas) on commercial leases in Tasmania

A two and a half year study was conducted to compare the performance of sibling diploid and triploid Sydney rock oysters Saccostrea commercialis (Iredale and Roughley) at three intertidal and one subtidal site in Port Stephens, New South Wales (NSW). The findings of this study have major...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)
People
Industry
Adoption
Environment
Industry
PROJECT NUMBER • 1996-355
PROJECT STATUS:
COMPLETED

Review of shellfish purification technology research and development

Depuration in the context of this report can be defined as the process by which harvested shellfish are placed in land based plants containing clean estuarine water to permit the purging of their gastrointestinal contents under controlled conditions. Depuration does not include the practice of...
ORGANISATION:
Department of Primary Industries and Regional Development (NSW)

Clarence River pilot prawn farming project

Project number: 1981-069
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Geoff L. Allan
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 28 Dec 1984 - 31 Dec 1984
Contact:
FRDC

Objectives

1. Establish a small pilot prawn farm adjacent to the Clarence River to fatten stunted school prawns taken from the river system.
2. Assess the economic viability & practicality of experimental results obtained at the Brackish Water Research Station

Final report

Author: Geoff Allan
Final Report • 1984-12-31 • 3.64 MB
1981-069-DLD.pdf

Summary

The research programme was largely comprised of farming trials in a 1 ha prawn farming pond and in swimming pools on the pond bank at the field site. Juvenile school prawns (Metapenaeus macleayi) were collected by commercial trawlers in Lake Wolloweyah, transported by punt to the pond where they were stocked and farmed for 2 to 3 months before harvest and marketing at the Sydney Fish Market.

The prawn production results were used as the basis for an independent economic analysis of school prawn farming. The first version of this analysis is discussed in the accompanying NPS2 paper and a revised version presented at the N.S.W. Department of Agriculture Prawn Farming Open Day (a compilation of the papers delivered at this Open Day is attached). Both versions predicted attractive returns on capital but it should be noted that the extrapolation from pilot scale to commercial scale must necessarily be in part hypothetical until it is supported by consistent commercial success.

Project products

Report • 3.94 MB
1981-069-Product.pdf

Summary

This report deals with the period July to October 1977 during which time inspections of the prawn farming industries of Japan, the Philippines and Thailand were made. A total of ten weeks was spent in Japan with shorter periods in the Philippines and Thailand.

Japan not only has the most successful prawn farming industry in the world but its aquaculture research in general is also the most advanced and diverse. Thus it was possible to inspect facilities used for the culture of many species and a brief section dealing with the aquaculture of some of these other species is included, along with observations from the other two countries visited.

The bulk of the report deals with Japanese aquaculture and the aim has been to provide considerable detail but  mostly as a supplement to existing works published in English. Much less published information is available for the aquaculture industries of the Philippines and Thailand and thus the sections relating to these countries are written in as much detail as possible. Some understanding of the larval development of penaeid prawns and portunid crabs is assumed in some sections of this report but not in the general summary (Section 10) which also includes recommendations relevant to the Australian situation.

Article • 1978-12-08 • 168.30 KB
1981-069-Product-2.pdf

Summary

Juvenile school prawns (Metapenaeus macleayi) were collected from the Clarence River, N.S.W., Australia and fattened in artificial ponds. After harvest these prawns were assessed by taste panels along with other samples of the same species collected from estuarine fisheries in N.S.W. Taste panels could not detect any significant differences between pond-fat­tened and wild prawns and both were found to be highly acceptable.

Risk assessment for the NSW seafood industry

Project number: 1998-359
Project Status:
Completed
Budget expenditure: $14,500.00
Principal Investigator: John Diplock
Organisation: Department of Primary Industries and Regional Development (NSW)
Project start/end date: 8 Sep 1998 - 11 Aug 1999
Contact:
FRDC

Objectives

1. To conduct a risk assessment of the health risks by the NSW seafood industry using accepted risk classification models and to identify those areas posing significant and/or immediate threats to human health and to prioritise the areas requiring food safety planning.
2. To review available information and identify any deficiencies in effectiveness and efficiency of current food safety measures for the seafood industry, and any risks not addressed by the current systems.
3. To estimate likely costs to government and industry of implementation of food safety plans over a five year period to address the identified risks.

Final report

Author: John Diplock
Final Report • 1999-08-02 • 230.50 KB
1998-359-DLD.pdf

Summary

Seafood, unlike most other foods, can pose serious food poisoning risks simply as a result of their biology and/or the way in which they are consumed.  This problem is further exacerbated by the fact that animals posing a risk do not show any signs that can easily distinguish them from ‘safe” food.  This has resulted in a widespread lack of appreciation of the dangers posed by seafood amongst those that catch and distribute the products.

The notion amongst those in the industry is that if the product is “fresh” - meaning recently caught- it is safe to eat, with the corollary being that catchers and distributors take little action to ensure that food is safe to eat, other than to keep the product cold to touch.  The lack of data on outbreaks of food poisoning attributed to seafood, except in cases related to shellfish, may have further contributed to the complacent attitude amongst seafood operators to food safety.  However the risks posed by seafood are real, and apart from oysters and pipis, little is being done to ensure that only safe products are offered for sale.  Even enterprises that export under AQIS requirements may sell product onto the domestic market that is not necessarily handled under their export quality program. 

Our study has shown that most operators in the seafood industry are unable to describe the hazards posed by the seafood that they handle and sell and unwittingly subject most to considerable time/temperature abuse.  There is ineffective product identification through the distribution channels and thus the industry has limited ability, if any, for effective product recall in the event of a food poisoning outbreak.

There is sufficient evidence (based on survey and interviews with managers and staff within the NSW seafood industry, and with senior personnel from peak industry organisations) to indicate a significant gap between existing industry practice and what is required to control hazards.

Recommendations are made based on these findings, and suggest a “whole of industry” approach to minimise implementation cost, and maintain consistency from catchers to wholesalers.  We recommend that comprehensive research is carried out to quantify the hazards and effective control measures for the NSW seafood industry.  This research is essential to provide the industry with a scientific basis for the preparation of their HACCP programs, and to ensure that industry can equip itself to provide safe seafood.

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