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 form...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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 pr...

Ngày tải lên: 15/12/2013, 00:15

... 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 wil...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15

... 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...

Ngày tải lên: 15/12/2013, 00:15