Manual on Hatchery Production of Seabass and Gilthead Seabream Volume 2

... General hatchery layout C. Broodstock unit B. Larval rearing unit D. Weaning unit A. Phyto-zooplankton unit Manual on Hatchery Production of Seabass and Gilthead Seabream Volume 2 Food and Agriculture Organization of the United Nations part ... possible) and causing production interruptions. 1 .2 SITE SELECTION CRITERIA The Mediterranean region is not uniform...

Ngày tải lên: 14/03/2014, 11:18

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Ngày tải lên: 23/03/2014, 22:20

... MICRO-ALGAE 2. 1. Introduction 2. 2. Major classes and genera of cultured algal species 2. 3. Algal production 2. 3.1. Physical and chemical conditions 2. 3.1.1. Culture medium/nutrients 2. 3.1 .2. Light ... 4.4 .2. Tank production 4.4 .2. 1. Advantages of tank production and tank produced biomass 4.4 .2. 2. Physico-chemical conditions 4.4 .2. 3. Artemia 4.4 .2. 4...

Ngày tải lên: 15/12/2013, 00:15

... Walne 2. 29 13.31 6 .20 7.04 ES 2. 58 16.98 6.93 7 .22 F /2 2.38 21 .75 8.37 7. 92 Algal-1 4.11 32. 22 8.83 8.65 D. tertiolecta Walne 4.04 13.37 13 .22 22 .28 ES 4 .24 14.88 15.73 23 .94 F /2 4.97 ... consistency and unpredictable culture crashes due to contaminations and/ or fluctuating climatological conditions. Indoor algal production offers a better control o...

Ngày tải lên: 15/12/2013, 00:15

... Experimental Batch 1 Batch 2 Batch 3 Age of the population Number of rotifers per ml Day 1 20 0 20 0 20 0 Day 2 261 ± 13 327 ± 17 28 0 ± 12 Day 3 444 ± 65 473 ± 42 497 ± 25 Day 4 581 ± 59 687 ± 44 ... rate.day -1 0 .26 7 0.308 0.306 Doubling time 2. 60 2. 25 2. 27 Commercial Batch 1 Age of the population Number of rotifers per ml Day 1 20 0 Day 2 285 Day...

Ngày tải lên: 15/12/2013, 00:15

... 4 .2. Use of cysts 4 .2. 1. Cyst biology 4 .2. 2. Disinfection procedures 4 .2. 3 Decapsulation 4 .2. 4. Direct use of decapsulated cysts 4 .2. 5. Hatching 4 .2. 6. Literature of interest 4 .2. 7. ... screening of candidate strains and of eventual local populations, as well as the study of prevailing environmental conditions. Uncontrolled introduction of Artemia ma...

Ngày tải lên: 15/12/2013, 00:15

... - - - - 21 - - .001 .001 .001 - 22 .001 .001 .001 .001 .001 .001 23 .001 .001 .001 .0 02 .0 02 .001 24 .001 .0 02 .0 02 .0 02 .0 02 .0 02 25 .0 02 .0 02 .003 .003 .003 .0 02 26 .0 02 .0 02 .003 .003 ... 1.15 1 .20 1 .25 10 .0 02 .0 02 .003 .003 .003 .003 11 .0 02 .0 02 .003 .003 .003 .003 12 .001 .0 02 .0 02 .003 .003 .0 02 13 .001 .0 02 .0 02 .003 .0 02 .0 0...

Ngày tải lên: 15/12/2013, 00:15

... 21 - - .001 .001 .001 - 22 .001 .001 .001 .001 .001 .001 23 .001 .001 .001 .0 02 .0 02 .001 24 .001 .0 02 .0 02 .0 02 .0 02 .0 02 25 .0 02 .0 02 .003 .003 .003 .0 02 26 .0 02 .0 02 .003 .003 ... initial density (3 × 25 0 N.ml -1 ) add 2 × 0 .2 g of emulsion (2 × 2 ml of 5 g. 50 ml -1 diluted emulsion) over 24 h (t = 0 h and t = 10- 12 h) · 24 h at 28 °C,...

Ngày tải lên: 15/12/2013, 00:15

... shortage of live foods. 4.4 .2. Tank production 4.4 .2. 1. Advantages of tank production and tank produced biomass 4.4 .2. 2. Physico-chemical conditions 4.4 .2. 3. Artemia 4.4 .2. 4. Feeding 4.4 .2. 5. ... 4.4 .2. 6. Culture techniques 4.4 .2. 7. Enrichment of ongrown Artemia 4.4 .2. 8. Control of infections 4.4 .2. 9. Harvesting and processing techniques 4.4...

Ngày tải lên: 15/12/2013, 00:15

... the pond also depends upon ratio surface: volume) . At the onset of the season a ratio “pond surface: pond volume larger then 3:1 seems acceptable (pond surface expressed in m 2 , pond volume ... unprecise and inaccurate. Of course sample volume depends both on animal abundance and animal size. As both cyst production and biomass production mainly depend on the nu...

Ngày tải lên: 15/12/2013, 00:15