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No Thumbnail AvailableProjectProgramme / project reportPreliminary studies on the effect of methyltestosterone on Macrobrachium rosenbergii juveniles (Crustaceana: Palaemonidae)
Establishment of a Network of Aquaculture Centres in Asia
1986Also available in:
No results found.Macrobrachium rosenbergii juveniles were fed hormone-free and hormone-treated diets at 30% crude protein. Methyltestosterone (MT) was incorporated in the diets at 3 levels (25 mg MT/ kg feed, 75 mg MT/kg feed and 125 mg MT/kg feed and administered for 60 days. Growth in all treatments after 30 days post-hormone treatment showed no significant differences (P 0.05) while sex ratios were significantly different in 3 treatments : control v diet I (25 mg MT/ kg feed); diet I v diet IV (125 mg MT/kg f eed) (P¡Ý 0.05). As artificial control of growth and monosex cultures through hormones are possible tools in any cultural management, this preliminary study may inspire further exploration along these lines particularly on the culture of the giant freshwater prawn. 1 Research conducted under the FAO/NACA Secondment for Young Scientists Program Bangkok, Thailand October 1985-September 1986. 2 Research Associate-Southeast Asian Fisheries Development Center (SEAFDEC - AQD) Binangonan Research S tation Binangonan, Rizal Philippines 3106. -
No Thumbnail AvailableProjectProgramme / project reportA preliminary study of hydrogen sulphide toxicity on juveniles of Macrobrachium rosenbergii (de Man)
Establishment of a Network of Aquaculture Centres in Asia
1986Also available in:
No results found.Static bio-assays were performed for 96-hour period to determine the mean lethal concentrations (LC50) of hydrogen sulphide toxicity on juveniles of Macrobrachium rosenbergii. Two broods were tested and LC50 values were determined for 24, 48, 72 and 96 hours The LC50 values were 6.36, 4.25, 3.09 and 2.57 mg/l H2S for brood l and 5.57, 4.79, 4.25 and 4.20 for brood 2 respectively, for 24, 48, 72 and 96 hours. The safe concentration of hydrogen sulphide determined for juveniles of M. rosenbergii w as 0.26 mg/l. -
No Thumbnail AvailableProjectProgramme / project reportThe culture of the giant freshwater prawn (Macrobrachium rosenbergii de Man) in Cuba. Report of the first technical assessment mission, May 7th - 30th 1990 1990
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No results found.The Cuban government wish to expand the tourist industry as a sorce of much needed foreign exchange. Opportunites to supply and support the industry are actively being sought and include the provision of fish and shellfish foods from fisheries and aquaculture to supply the hotel and restaurant enterprises throughout the designated tourist areas. The culture of the Giant Freshwater prawn (Macrobrachium rosenbergii) is one such Trials are being made with pond reared stock using three methods to improve breeding; i) eyestalk ablation; ii) photoperiod manipulation; iii) artificial insemination. In the hatchery larvae are fed algae followed by minced clam, squid, marine fish and Artemia but Nippai prepared feeds are also used. A nursery phase is employed lasting 30–40 days which takes the shrimp from 5–10 day old post-larvae to 0.5 to 1.0 g juveniles. Stocking rate is 100/sq m but trials, have been made with 1000–2000 in 70 t tanks. In the on-growing phase shrimp are stocked at 5/m2, feed is given at from 15 to 2.5% per day and salinity is 25%. Feed costs around 200–250 pesos per tonne and contains squid, shrimp meal (from processed P. schmitti caught at sea) and zeolite. Problems with unstable artificial feed are common. Production is around 400–500 kg/ha/cycle and at present there are 1.6 to 1.7 cycles/yr. Newness of the ponds, inexperience and climatic changes are constraints on production. Early trials with P. notialis were not encouraging as growth stopped at 6–8 g, howev er new trials may be undertaken.
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LetterLetter from the Royal Commission for the IIA, Ministry of Foreign Affairs, Milan to D. Lubin 1907
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No results found.Translation of 1I20062 -
IndexesLibrary Classified Catalogue (1)/ Bibliothèque de catalogues systématiques (1) 1948
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No results found.The Protocol of 8-9 July 1946 relative to the dissolution of the International Institute of Agriculture, transferred the functions and assets of the said Institute to FAO. Of these assets, the Library is unquestionably the most outstanding and is a lasting record of the Institute's work and its achievement in the field of agriculture. This catalogue will undoubtedly contribute towards a better knowledge of this international Library. This volume in its present form, represents the systematic card-index, by subject of the Brussels Decimal Classification, in French and English, and it's supplemented by the general alphabetical index of authors.
This is Part 1 of 4 - Books - sections General, Bibliographies, Periodicals, Philosophy and Social Sciences.
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LetterLetter from the Acting Secretary, Department of State to D. Lubin, Hotel Raleigh, Washington 1907
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No results found.Asks for Lubin’s written views on IIA. With reference number RRFNo. 548/30; T/L).