03360nam a2200433 4500 20260817172953.0 th eng .b11699577 AIT Thesis no. AS-97-03 Rai, Sunila Co-culture of walking catfish with Indian major carps Bangkok : Asian Institute of Technology, 1997 85 leaves Thesis ; no. AS-97-03 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Environment, Resources and Development Thesis (M.Sc.) - Asian Institute of Technology, 1997 An experiment was conducted for 112 days to evaluate the growth performance of hybrid catfish and carps (silver carp, rohu and mrigal) in three different stocking ratios of 3.2:1, 4.8:1 and 6.4:1, and their impact on water quality and nutrient budget. Hybrid catfish were stocked in 1.2 m3 cage, at a density of 100, 150 and 200 fish/cage. Fish were fed on pellet feed, at a rate of 2% body weight. Carps were stocked at a rate of 5,000 fish/ha in 250 m2 ponds. The ratio of carps was 1: 1 : 1. The carps were grown solely on natural food produced by nutrients wastes from caged catfish. Ponds were fertilized prior to stocking at a rate of 4 kg N/ha/day and 1 kg P/ha/day. Net fish yield of hybrid catfish (28.7 kg/cage), net yield of carps (13.3 kg/pond) and combined net yield of caged catfish and pond carps (127.9 kg/pond) were significantly higher (P<0.05) in higher stocking density of catfish. Stocking ratio of 6.4: 1 appeared to be the best stocking ratio. Stocking ratio did not affect water quality. Hybrid catfish culture released 61-64% N and 76-79% P, out of which carps recovered 3.1-3.8% N and 2.4-2.9% P, and 1.5-2.3% N and 1.3- 14.0% P were lost to the water column. Rest nutrients were unaccounted for. Nutrients derived from the wastes equal to fertilization rate of 0.9-1.6 kg N/ha/day and 0.3-0.5 kg P/ha/day, which were grossly inadequate for phytoplankton production to support the growth of herbivorous carps. Fish-culture Catfishes Carp Lin, C. K., Chairperson Edwards, Peter, Examination Committee Little, David C., Examination Committee NORAD, Scholarship donor Asian Institute of Technology. Thesis ; no. AS-97-03 Full-Text http://203.159.5.9/ait-thesis/detail.php?q=B13776 .b11699577 mnait y 240403 0 980323 m a y 0 mnait mnait mnarc 20 40 Barcode : 30050120727499 CREATED : 1996-10-24 RECORD # : i12058142 LPATRON : 1018014 LCHKIN : 2005-06-04 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 1 TOT CHKOUT : 3 TOT RENEW : 2 Barcode : 30050120727507 CREATED : 1996-10-24 RECORD # : i12058154 LPATRON : 1020954 LCHKIN : 2008-06-23 # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 13 TOT RENEW : 6 Barcode : 30050120358444 CREATED : 2016-08-06 RECORD # : i13026859 LPATRON : 0 LCHKIN : - # RENEWALS : 0 # OVERDUE : 0 IUSE3 : 0 TOT CHKOUT : 0 TOT RENEW : 0 18209 18209 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. AS-97-03 30050120727499 2026-08-17 17:29:53 1 2026-08-17 20 0 0 0 0 MAIN MAIN mnait 2026-08-17 0 AIT Thesis no. AS-97-03 30050120727507 2026-08-17 17:29:53 2 2026-08-17 20 0 0 0 0 MAIN MAIN mnarc 2026-08-17 0 AIT Thesis no. AS-97-03 30050120358444 2026-08-17 17:29:53 1 2026-08-17 40