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. ... mg.l -1 ) will kill smaller predators such as copepods and is also very toxic for shrimp. The degradation of rotenone, chlorine and CaO to non-toxic forms is fairly rapid (24 - 48 h). If on the ... 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...

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 ... larvae. The present manual describes the major production techniques currently employed for the cultivation of the major types of live food commonly used in larviculture, as well as their application...

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

... par India Bombay Bahinder - - Kelambakkam - - India Madras Vedaranyam - - Veppalodai - - Pattanamaruthur - - Spic Nagar - - Thirespuram - - Karsewar Island - - Saltwater springs P A. ... 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 ... Harbour - - India Kanyakumari Thamaraikulam P A. par Abu-Graib, Baghdad P A. par Basra - - Dayala - - Iraq Mahmoodia - - Urmia Lake B A. urm Schor-Gol - - Shurabil - - Iran Athlit - - Eilat...

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

... 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 ... evaluation of dry food is the consistency of the food quality and supply, and the possibility for storage without loss of quality. It follows therefore that bulk products must be stored in a dry and ... influence the feeding behavior of Artemia by affecting the filtration rate, ingestion rate and/ or assimilation: including the quality and quantity of the food offered, the developmental stage of the...

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 ... 16:0 23 .8 25.5 24.2 21.3 20.1 16:1n-7 8. 8 10 .8 11.4 8. 2 8. 6 18: 0 8. 9 5.6 6.2 9.4 6.7 18: 1n-9 13.7 12.9 8. 5 7.1 7.4 18: 2n-6 2.2 5.0 3.6 5.1 3.9 18: 3n-3 5.7 1 .8 1.3 7.9 9.3 18: 4n-3 4.2 2.0 ... 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 10 pptx

... 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 ... and 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 ... 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...

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

... Alternatively, the isolation of endemic strains could be considered because of their ability to grow under the local environmental conditions. Isolation of algal species is not simple because of the small ... 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 ... settlement of abalone larvae. After metamorphosis, the spat graze on the micro-algae until they become large enough to feed on macro-algae. The most common species of micro-algae used on the feeder...

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. 1 987 . A consideration of why mass culture of the...

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

... 88 .24 125 1 15 88 .65 1 28 1 15 88 .89 average nauplii = 126 average H% = 88 .23 average H% = (87 . 08+ 89.03 +88 .23). 3-1 × 100 = 88 .11 (st. dev. = 0. 98) average HE = (115+127+126). 3-1 × 2000 = 245 ... 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 ... 1 21 84 .72 1 38 0 18 88. 46 103 3 7 91.45 142 0 12 92.21 130 4 13 88 .44 average nauplii = 127 average H% = 89 .03 replicate 3 127 3 14 88 .19 107 4 10 88 .43 133 2 18 86.93 135 5 13 88 .24...

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 ... contain high levels of thiamin ( 7-1 3 µg.g -1 ), niacin (6 8- 1 08 µg.g -1 ), riboflavin (1 5-2 3 µg.g -1 ), pantothenic acid (5 6-7 2 µg.g -1 ) and retinol (1 0-4 8 µg.g -1 ). A stable form of vitamin C (ascorbic ... 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...

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