tailieunhanh - Manual on the Production and Use of Live Food for Aquaculture - Phần 8

Tham khảo tài liệu 'manual on the production and use of live food for aquaculture - phần 8', nông - lâm - ngư, ngư nghiệp phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | From pre-adult stage daily food ratio 10 of WW culture water. The WW is measured as follows collect some liters of culture over a sieve that withholds the animals rinse with tapwater let water dug dip the sieve with paper cloth weigh the filter WW total weight - weight empty filter volume of sampled culture water -1. n d j 9 Q . Pond production . Description of the different Artemia habitats . Site selection . Pond adaptation . Pond preparation . Artemia inoculation . Monitoring and managing the culture system . Harvesting and processing techniques . Literature of interest . Worksheets Peter Baert Thomas Bosteels and Patrick Sorgeloos Laboratory of Aquaculture Artemia Reference Center University of Gent Belgium . Description of the different Artemia habitats Natural lakes Permanent solar salt operations Seasonal units As was explained earlier Artemia populations are widely distributed over the five continents in a variety of biotopes. Culture methods largely depend on pond size and available infrastructure. In this text we make a distinction between the following Artemia production systems. . Natural lakes High saline lakes in which natural Artemia populations are present. Such lakes can be small Egypt Solar Lake of medium size California USA Mono Lake Cyprus Larnaca Lake or large Utah USA Great Salt Lake Iran Lake Urmia Canada Chaplin Lake . In these inland lakes population densities are usually low and mainly fluctuate in function of food availability temperature and salinity. The size and or often complete absence of suitable infrastructure makes management of such lakes very difficult restricting the main activity to extensive harvesting of Artemia biomass and or cysts. . Permanent solar salt operations Mechanized operations consisting of several interconnected evaporation ponds and crystallizers. In these salt operations ponds can have