Comparison of various aspects of marine cage farming between Norway and Taiwan
2000
Liu, C.Y. (National Kaohsiung Inst. of Marine Technology, Kaohsiung 811 (Taiwan). Dept. of Aquaculture)
There is only a few years difference when Norway and Taiwan started marine cage farming. At present, however, development is highly significantly different between the two countries. Norway has become the number one marine cage farming fish producer in the world. There are a lot of reasons that relate to the difference, such as: species of fish, marine engineering technology, nutrition and feed, developed vaccines for the fish, genetic breeding, automation, laws and regulations relating to this field, fish processing technology, marketing, environmental protection, and basic researches on various aspects. Norway has established the propagation techniques on quite a few species of fishes and the main species that has been farmed in the marine cages is still the Atlantic salmon. Taiwan had concentrated on the development of pond farming until about three years ago. Since then, the government and aquaculturists have been paying more attention and effort on the development of offshore marine cage farming. There are a few species of fishes that have been farmed in marine cages including cobia, various groupers, amberjack, Lutjanus spp., permit fish, and red sea bream. There are a few different types of cages being used in Norway: inshore wooden-frame cage; walkway stainless steel frame cage, high density PE circle cage and Bridge-stone cage. In Taiwan, a few types of cages are also used and these are: inshore wooden-frame cage buoys suspended "soft cage". smal floats hanged submerged "soft cage", and higher density PE circle cage either floating or submersible. Taiwan has very few inner bays while Norway has many fjords, which are very adequate for the development of cage farming although both countries have typhoon and hurricane problems respectively in different seasons. Finally, the government of Norway has given the enterprises the so called "investment reduction" to encourage them to finally support research projects (including aquaculture research). This has significant impact on the development of marine cage farming in Norway
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