Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 9 pptx

... However, one should be aware that the greater the surface area of the net the more effective and rapid the filtration. Hence, the upper limit of the dimensions of the nets depends on the ease of handling ... along distribution pipes to the place of consumption, the normal practise is to concentrate and transport the harvested zooplankton in 50 l containers. Under these conditions the survival of ... food compared to the infrastructure and production costs of the live food items discussed earlier. On the other hand, there are also major drawbacks in the use of zooplankton, including: (1)...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 1 pptx

... presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal ... permission of the copyright owner. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, Information Division, Food ... under controlled hatchery conditions requires not only the development of specific culture techniques, but in most cases also the production and use of live food organisms as feed for the developing...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 4 pptx

... the seasons 199 3-1 99 4 and mainly 199 4-1 99 5. Already in the late seventies it appeared that the nutritional value of Artemia, especially for marine organisms, was not constant but varied among ... North America and seemed to be unlimited. However, with the expansion of aquaculture production in the 197 0’s, the demand for Artemia cysts soon exceeded the offer and prices rose exponentially, ... par India Bombay Bahinder - - Kelambakkam - - India Madras Vedaranyam - - Veppalodai - - Pattanamaruthur - - Spic Nagar - - Thirespuram - - Karsewar Island - - Saltwater springs P A....

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 7 pptx

... - 23.1 10.5 - 22. 79 0.5 Cultured juveniles & adults 49. 7 - 62.5 9. 4 - 19. 5 - 9. 0 - 21.6 Wild adults 50.2 - 69. 0 2.4 - 19. 3 - 8 .9 - 29. 2 Artemia juveniles and adults are used as a nursery ... ration at a maximum concentration of 200 g food. l -1 . Even at these concentrations, the food suspension is so thick that the risk for clogging of the food lines is quite high. It follows The ... controlled super-intensive production of Artemia juveniles and adults. Aquacultural Engineering 11: 10 7-1 19. Dhont J., Lavens, P. and Sorgeloos, P. 199 3. Preparation and use of Artemia as food for shrimp...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 8 pptx

... predators from entering the culture ponds. The same type of filters as described for large salt operations can be used. Moreover, the small size of the ponds allows the use of so-called filter boxes. ... bottom, they should only be used for a limited period of time. Recommended levels of organic manure are 0.5 to 1.25 ton.ha -1 at the start of the production season with dressings of 100 to ... use in aquaculture. Therefore, the selection of the strain best adapted to the particular ecological conditions of the site and/ or most suitable for its later application in aquaculture is very...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 10 pptx

... meet the needs of aquaculture workers of member countries for the synthesis of information in the field of aquaculture nutrition and feed development. 300 and depends largely upon the size of ... use of live food organisms as feed for the developing larvae. The present manual reviews and summarizes the latest developments concerning the production and use of the major live food organisms ... 14:1n-5 0. 19 1.52 16:0 11.05 12. 89 16:1n-7 4.71 10.46 17:0 0. 89 0.42 18:0 7.58 4.70 18:1n -9 8.42 15.05 18:1n-7 11.15 11.28 18:2n-6 28.38 9. 91 18:3n-3 5.03 9. 28 20:0 1. 29 0.23 20:1n -9 0.50...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 2 doc

... The nutritional value of micro-algae can vary considerably according to the culture conditions. For example the effect of the composition of the culture medium on the proximate composition ... rate and in this way the growth rate and not the cell density is kept constant. Laing ( 199 1) described the construction and operation of a 40 l continuous system suitable for the culture of flagellates, ... diets either as a supplement or as the main food source. These various aspects of the production, use and substitution of micro-algae in aquaculture will be treated within the limits of this...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 3 ppt

... survived the passage of the intestinal tract of the rotifers are killed as well. The concentration of the disinfection products differs according to their toxicity and the initial condition of the ... Introduction Among the live diets used in the larviculture of fish and shellfish, nauplii of the brine shrimp Artemia constitute the most widely used food item. Annually, over 2000 metric tons of ... Jaspers and G. Persoone (Eds), Cultivation of fish fry and its live food. European Mariculture Society, Special Publication, 4:36 1-3 75. Hirayama, K. 198 7. A consideration of why mass culture of the...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 5 docx

... .001 .001 .001 .001 .001 18 - .001 .001 .001 .001 .001 19 - - .001 .001 - - 20 subtract correction from measured density - - - - - - 21 - - .001 .001 .001 - 22 .001 .001 .001 .001 .001 ... during the first two weeks, the use of decapsulated cysts constitutes a saving of over one third in the amount of Artemia cysts used, compared to the use of live nauplii. Table 4.2.4. The proximate ... incubation and/ or by the addition of a few drops of a non-toxic antifoaming agent (e.g. silicone antifoam). The temperature of the seawater is preferentially kept in the range of 2 5-2 8°C; below...

Tài liệu Manual on the Production and Use of Live Food for Aquaculture - Phần 6 docx

... 2.5 1 3-1 6 2. 7-3 .0 1 7-1 9 5. 0-7 .0 2-5 2 0-2 3 3. 0-4 .3 3-1 1 5-7 2 4-2 7 0 1 4-1 7 7-1 0 2 8-2 9 1 7-2 0 1 0-1 5 3 0-3 4 20 1 0-1 5 1 0-1 5 3 5-3 7 20 0 2 0-3 0 3 8-4 1 0.05 20 3 0-4 0 Start of weaning 2 0-1 5 4 0-5 0 ... enhanced the survival of P. monodon PL-15 and the osmotic resistance of PL-10. This has recently been confirmed with the production characteristics of P. monodon PL-10 and PL-20 being significantly ... w3-HUFA-enriched live food. Aquaculture, 90 :6 3-7 4. Dhont, J., Lavens, P., and Sorgeloos, P. 199 3. Preparation and use of Artemia as food for shrimp and prawn larvae. In: CRC Handbook in Mariculture,...

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