04364cas a2200409 a 4500 20260818094936.0 111005s1990 th uu|m rtt 0| a1eng d .b10690347 AIT Thesis no. AE-90-32 Nietes, Arlene D. The effect of feedtypes/forms on the growth and quality of Penaeus monodon post-larvae Bangkok : Asian Institute of Technology, 1990 122 p. Thesis ; no. AE-90-32 A thesis submitted in partial fulfillment requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1990 Good post- larval shrimp quality is critical grow-out operations. Nutrition and water quality during larval and post- larval rearing are generally by shrimp farmers to be the most important factors the quality of post-larvae. to shrimp conditions considered affecting This study was conducted to: a) assess the most effective combination of feed types commonly used in commercial nurseries for Penaeus monodon; b) devise a practical method to test post-larval quality using a combination of salinity and temperature stress; and c) identify current constraints to post-larval production in Thailand through farm surveys. Two 23- day growth trials were performed to compare different types of food . Post-larvae were reared in static glass aquaria containing 30 L sea water (20 ppt) stocked with 30 post-larvae/L. Experiment 1 compared live Artemia nauplii, Artemia freeze-dried flakes, and formulated feed pellet, as single and mixed food sources. This revealed that a combination of live Artemia nauplii (first 8 days at 100 nauplii/post-larvae) and formulated feed pellets (days 9 to 23 at 15% to 25% body weight) gave the best growth. This combination was chosen as a standard diet for Experiment 2, which compared green water (Chaetoceros culture and · natural algae production - outdoor) and clear water systems. Post-larval performance in the outdoor culture system achieved the highest post-larval growth (66.8 mg and 23.1 mm) and survival (67%), most efficient apparent food conversion ratio (0.7), the least presence of metabolites, and the lowest estimated cost for the production of post-larval shrimps (PL11 to 34). Stress tests using different combinations of salinity (0, 5, 7.5, 10, 20, 30, 40, 45, and 50 ppt) and temperature (20°C and 32°C) were conducted to be able to derive a combination that can give a 60% survival after l hour of exposure. On campus 200 to found ppt or stress tests used 150 post-larvae/test while on - farm, 500 post-larvae were used/test. From the tests it was that a) 20°C and 10 ppt or 41 ppt, and b) 32°C with 5 40 to 50 ppt, can effect this response . Application of this simple test on post- larval quality can eliminate current problems where, on purchasing weak post larvae, farmers subsequently suffer economic losses due to mortalities after stocking into the grow-out ponds . Shrimp culture Machintosh, Donald J., Chairperson Lin, Chang Kwei, Examination Committee Knud-Hansen, Christopher F., Examination Committee Danish International Development Agency (DANIDA) - Royal Government of Denmark, Scholarship Donor Asian Institute of Technology. Thesis ; no. AE-90-32 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B18265 .b10690347 mnait s 240402 2 951012 m a s 4 mnait mnait mnarc 20 40 Barcode : 30050003005559 CREATED : 1994-05-19 RECORD # : i10887325 LPATRON : 1020955 LCHKIN : 2008-08-03 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 2 TOT RENEW : 4 Barcode : 30050003005567 CREATED : 1994-05-19 RECORD # : i10887337 LPATRON : 1011411 LCHKIN : 1997-09-21 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 1 TOT RENEW : 0 Barcode : 30050120363873 CREATED : 2016-05-27 RECORD # : i12999179 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 34341 34341 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-90-32 30050003005559 2026-08-18 09:49:36 1 2026-08-18 20 0 0 0 0 MAIN MAIN mnait 2026-08-18 0 AIT Thesis no. AE-90-32 30050003005567 2026-08-18 09:49:36 2 2026-08-18 20 0 0 0 0 MAIN MAIN mnarc 2026-08-18 0 AIT Thesis no. AE-90-32 30050120363873 2026-08-18 09:49:36 2026-08-18 40