Lates calcarifer Bloch, NHAU 2012 Lates calcarifer Bloch, NHAU PGs Ts 2012 Khoa y i Lates calcarifer Bloch, 1790) s m (i) TACN + cá tap, (ii) con/m3 3,19 g/con cá 2,88-6,21 cm/con NH +, NO 2cá ±22,0 g/con CN cá ± ± ii Trang i ii iii DANH SÁCH HÌNH v vi vii 1.1 1.2 1.3 10 10 11 12 12 13 13 14 15 15 16 16 17 iii 18 18 21 21 21 22 24 iv DANH SÁCH HÌNH Hình Hình 3.3 Hình 3.4 Hìn Hình 4.3 Hình 4.4 Hình 4.5 Hình 4.6: Trang Lates calcarifer Bloch, 1790) 10 13 14 15 17 19 tháng nuôi 20 v Trang 10 12 lo 15 16 18 18 vi CT TB DWG SGR Trung bình T T vii T V Lates calcarifer uôi Lates calcarifer Bloch, 1790) 1.2 M c tiêu c tài Thúy Nguyên (2008) 14,5% 100 TACN 80 60 40 20 tháng tháng tháng Hình 4.4: T 4.5 kg/m3 kg/m3 kg/m3) 18 TACN TACN+Cá FCR ) 1,47 1,21 TACN 2,25 1,64 2,01 0,62 - 3,92 nuôi TACN TACN+Cá (con) 175 144 0,26 0,09 0,38 0,13 115 0,32 0,12 ng sau tháng nuôi 28,0 g/con 160 19 Hình 4.5: nuôi 22,5 cm/con 19,0 cm/con cm/con 20 Hình 4.6: 21 K T LU XU T - (15,4 cm/con) g/ngày 0,10 cm/ngày) - 22 TÀI LI U THAM KH O Psammoperca naigiensis) tro -25.11.2003 Trang 86 ctv http://www.agroviet.gov http://www.fistenet.gov.vn Dung 1994 -87 (Lates calcarifer, Bloch 1790) ctv (Psammoperca waigiensis Oxyeleotris marmoratus Tr 2: 106-112 s http://www.fistenet.gov.vn 23 TACN TAC TT 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 (g/con) 2,89 2,93 3,13 3,01 3,21 2,92 2,65 3,35 3,05 2,84 2,85 2,94 3,08 3,15 2,75 2,63 2,47 2,77 2,35 4,04 2,49 2,13 3,93 4,28 2,47 3,01 4,22 2,98 2,78 2,52 (cm/con) 5,7 6,0 6,7 6,0 6,7 5,8 5,5 6,8 6,0 6,5 5,5 6,5 6,0 6,4 5,9 5,6 5,2 6,1 5,6 6,5 5,9 5,7 6,0 6,2 5,7 5,9 7,0 5,8 5,7 5,5 (g/con) 3,60 3,18 3,59 4,17 3,27 3,77 2,46 4,29 3,72 2,61 3,60 4,18 3,37 2,96 2,83 2,20 2,80 2,92 2,06 2,30 3,01 2,59 3,94 3,11 4,67 2,66 3,87 2,81 2,78 2,43 (cm/con) 6,2 6,3 6,8 7,2 6,3 6,5 5,6 6,5 6,4 6,0 6,2 7,0 6,4 6,4 5,7 5,3 6,0 6,2 5,3 5,4 6,0 6,0 7,2 6,3 7,3 6,0 6,5 6,1 5,9 5,4 (g/con) 3,11 3,14 3,29 2,74 2,28 3,72 2,13 1,96 2,74 3,10 2,40 2,86 1,98 2,93 3,38 4,16 3,83 2,94 3,19 1,74 2,80 3,57 3,12 2,56 2,26 1,64 3,76 3,12 3,05 2,85 (cm/con) 6,2 6,3 6,4 6,0 5,7 7,0 5,5 5,5 6,0 6,3 6,1 6,0 5,4 6,0 6,4 7,0 6,7 6,2 6,8 5,3 6,0 6,8 6,7 6,0 5,9 5,1 6,6 6,5 5,9 5,3 24 TACN TT 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 (g/con) 24,15 16,05 24,45 19,54 7,49 15,78 9,97 19,82 10,95 18,09 18,74 17,85 10,85 15,72 19,50 11,53 17,35 17,23 13,86 10,88 17,08 20,14 13,45 18,43 23,63 17,54 14,66 16,93 16,05 11,09 (cm/con) 12,7 10,7 12,4 11,6 8,60 10,7 9,0 11,5 9,70 11,5 11,5 11,0 9,30 11,3 11,6 10,0 11,0 11,7 10,5 9,70 11,0 12,0 10,6 11,5 12,3 11,5 10,4 11,6 10,7 9,50 (g/con) 19,60 12,20 17,62 18,43 16,94 16,56 15,50 10,98 13,92 18,76 11,21 22,08 13,43 7,67 13,20 15,11 10,43 12,96 15,44 22,02 14,0 12,30 18,51 13,91 17,79 15,53 19,76 22,33 12,61 9,51 (cm/con) 11,5 10,0 11,7 11,2 10,5 10,6 10,5 9,3 10,4 11,5 10,0 11,8 9,6 8,5 10,4 10,5 9,1 9,9 11,0 12,0 11,0 10,0 11,0 10,0 11,0 10,6 11,7 11,3 10,0 9,5 (g/con) 8,73 7,51 10,42 6,07 4,41 6,37 8,35 6,75 6,52 6,82 6,32 5,58 11,98 7,07 9,62 7,94 8,12 6,06 7,74 11,3 6,06 7,62 8,56 7,43 7,07 10,09 4,25 8,63 9,26 10,28 (cm/con) 8,6 8,6 9,3 7,7 6,7 7,5 8,5 8,5 7,5 8,0 8,0 7,5 9,1 8,0 8,6 8,2 8,4 7,5 8,0 9,0 7,5 8,6 9,0 8,3 7,9 8,7 6,5 8,5 8,6 9,3 25 TACN TT 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 (g/con) 94,0 88,0 92,0 95,0 84,0 64,0 28,0 90,0 103,0 80,0 54,0 90,0 98,0 100,0 92,0 88,0 97,0 110,0 96,0 89,0 68,0 85,0 106,0 62,0 93,0 95,0 94,0 88,0 68,0 131,0 76,0 72,0 87,0 (cm/con) 20,3 19,7 19,0 20,5 20,0 18,0 14,4 19,7 20,5 19,2 17,0 20,4 20,7 20,7 20,0 19,0 20,0 20,7 20,5 20,4 17,7 19,5 20,2 17,7 20,0 19,5 21,4 20,1 19,5 21,9 17,5 16,6 19,3 (g/con) 78,0 27,0 69,0 108,0 143,0 114,0 31,0 73,0 99,0 97,0 93,0 80,0 114,0 44,0 143,0 138,0 65,0 107,0 58,0 117,0 72,0 87,0 120,0 110,0 119,0 139,0 123,0 37,0 42,0 72,0 95,0 104,0 47,0 (cm/con) 18,5 12,5 18,0 20,5 22,0 20,7 13,6 18,5 20,5 19,2 19,2 18,5 21,0 15,2 22,5 22,5 18,2 21,0 16,7 20,2 18,0 18,0 20,7 20,8 21,5 21,5 22 14,0 15,0 18,0 20,3 20,5 15,3 (g/con) 27,0 15,0 47,0 37,0 56,0 94,0 77,0 62,0 36,0 36,0 27,0 60,0 32,0 71,0 83,0 29,0 42,0 38,0 45,0 52,0 47,0 51,0 59,0 69,0 73,0 38,0 67,0 45,0 67,0 63,0 54,0 45,0 66,0 (cm/con) 13,0 11,0 15,0 13,0 14,5 19,0 18,0 15,5 13,0 13,0 12,0 15,0 13,0 17,5 17,0 13,2 15,0 13,7 15,2 16,0 15,5 15,5 17,0 17,5 18,2 13,3 16,9 14,8 16,8 16,2 16,2 14,5 16,3 26 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 60,0 80,0 98,0 107,0 119,0 66,0 126,0 95,0 71,0 64,0 87,0 55,0 85,0 73,0 89,0 117,0 125,0 83,0 95,0 73,0 86,0 107,0 75,0 75,0 89,0 101,0 88,0 80,0 44,0 103,0 88,0 82,0 103,0 90,0 76,0 130,0 126,0 58,0 100,0 74,0 82,0 17,5 17,8 20,5 21,5 21,0 20,2 22,5 20,3 18,4 18,0 19,5 17,0 19,5 19,5 20,2 22,0 22,0 18,7 20,5 19,4 20,3 20,3 19,4 19,4 20,5 21,0 21,0 19,5 15,5 21,2 20,0 19,2 21,0 19,7 19,3 23,0 22,2 17,4 20,5 18,7 19,6 45,0 70,0 97,0 69,0 129,0 49,0 135,0 75,0 135,0 109,0 95,0 140,0 40,0 46,0 45,0 69,0 69,0 80,0 76,0 46,0 53,0 33,0 66,0 86,0 70,0 48,0 48,0 150,0 81,0 83,0 58,0 80,0 57,0 88,0 75,0 76,0 74,0 58,0 89,0 103,0 92,0 15,4 17,6 17,7 17,2 21,5 15,6 22,2 18,5 21,4 21,2 20,2 22,5 15,0 15,7 15,4 17,2 18,0 18,7 18,7 15,4 15,7 13,8 18,7 18,6 18,3 15,5 16,0 21,6 19,0 18,3 16,7 18,6 17,3 19,0 18,2 18,1 18,3 17,8 19,1 19,8 20,1 72,0 63,0 53,0 64,0 39,0 42,0 44,0 59,0 61,0 57,0 59,0 70,0 63,0 69,0 52,0 58,0 27,0 15,0 47,0 37,0 56,0 94,0 77,0 62,0 36,0 36,0 27,0 60,0 32,0 71,0 83,0 29,0 42,0 38,0 45,0 52,0 47,0 51,0 59,0 69,0 73,0 17,9 16,0 16,1 16,0 13,5 14,2 14,5 16,5 17,2 16,6 16,7 16,9 16,2 16,7 15,8 16,4 13,0 11,0 15,0 13,0 14,5 19,0 18,0 15,5 13,0 13,0 12,0 15,0 13,0 17,5 17,0 13,2 15,0 13,7 15,2 16,0 15,5 15,5 17,0 17,5 18,2 27 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 100,0 68,0 152,0 91,0 93,0 76,0 44,0 65,0 59,0 82,0 103,0 72,0 73,0 68,0 114,0 73,0 107,0 78,0 61,0 52,0 75,0 103,0 61,0 80,0 78,0 82,0 90,0 62,0 83,0 108,0 58,0 86,0 86,0 60,0 75,0 42,0 73,0 78,0 46,0 75,0 104,0 20,1 17,6 24,4 20,0 21,2 19,3 15,7 18,7 17,7 19,2 20,1 19,7 18,7 18,6 21,5 20,5 21,3 19,4 17,6 17,1 19,0 20,0 17,8 19,5 19,0 19,4 19,7 18,5 19,7 21,6 16,6 20,0 20,1 17,5 18,1 15,3 19,1 19,1 16,4 19,5 21,8 93,0 71,0 82,0 81,0 76,0 68,0 73,0 78,0 27,0 69,0 108,0 143,0 114,0 31,0 73,0 99,0 97,0 93,0 80,0 114,0 44,0 143,0 138,0 65,0 107,0 58,0 117,0 72,0 87,0 120,0 110,0 119,0 139,0 123,0 37,0 42,0 72,0 95,0 104,0 47,0 45,0 20,1 18,3 18,2 17,9 18,8 17,9 18,6 18,5 12,5 18,0 20,5 22,0 20,7 13,6 18,5 20,5 19,2 19,2 18,5 21,0 15,2 22,5 22,5 18,2 21,0 16,7 20,2 18,0 18,0 20,7 20,8 21,5 21,5 22,0 14,0 15,0 18,0 20,3 20,5 15,3 15,4 38,0 67,0 45,0 67,0 63,0 54,0 45,0 66,0 72,0 63,0 53,0 64,0 39,0 42,0 44,0 59,0 61,0 57,0 59,0 70,0 63,0 69,0 52,0 58,0 27,0 15,0 47,0 37,0 56,0 94,0 77,0 62,0 36,0 36,0 27,0 60,0 32,0 71,0 83,0 29,0 42,0 13,3 16,9 14,8 16,8 16,2 16,2 14,5 16,3 17,9 16,0 16,1 16,0 13,5 14,2 14,5 16,5 17,2 16,6 16,7 16,9 16,2 16,7 15,8 16,4 13,0 11,0 15,0 13,0 14,5 19,0 18,0 15,5 13,0 13,0 12,0 15,0 13,0 17,5 17,0 13,2 15,0 28 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 66,0 59,0 42,0 83,0 160,0 151,0 79,0 75,0 79,0 124,0 86,0 114,0 69,0 79,0 85,0 130,0 75,0 66,0 43,0 72,0 104,0 89,0 98,0 74,0 88,0 95,0 118,0 55,0 84,0 62,0 106,0 36,0 98,0 95,0 108,0 69,0 102,0 54,0 50,0 85,0 105,0 18 16,7 15,7 17,7 24 23 19,1 19 19,5 22,5 20,2 21,5 17,7 18,6 19,5 22,2 18,5 18,5 16,0 19,0 21,0 20,0 20,6 19,0 20,5 20,0 22,6 17,1 19,3 18,0 21,5 14,7 20,5 20,6 21,4 17,7 20,4 17,0 16,2 19,6 21,8 70,0 97,0 69,0 129,0 49,0 135,0 75,0 135,0 109,0 95,0 140,0 40,0 46,0 45,0 69,0 69,0 80,0 76,0 46,0 53,0 33,0 66,0 86,0 70,0 48,0 48,0 150,0 81,0 83,0 17,6 17,7 17,2 21,5 15,6 22,2 18,5 21,4 21,2 20,2 22,5 15,0 15,7 15,4 17,2 18,0 18,7 18,7 15,4 15,7 13,8 18,7 18,6 18,3 15,5 16,0 21,6 19,0 18,3 29 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 94,0 94,0 46,0 102,0 84,0 62,0 60,0 93,0 77,0 98,0 47,0 78,0 59,0 84,0 59,0 94,0 88,0 92,0 95,0 20,0 20,5 16,6 20,5 20,0 18,0 17,5 19,7 18,8 20,4 18,0 19,5 17,7 20,0 17,0 20,3 19,7 19,0 20,5 30 Ngày 15/7/2012 C pH NH 4+ N-NO2 1/8/2012 pH NH 4+ N-NO2 15/8/2012 pH NH 4+ N-NO2 1/9/2012 pH NH 4+ N-NO2 15/9/2012 pH NH 4+ N-NO2 1/10/2012 pH NH 4+ N-NO2 15/10/2012 S C S C S C S C S C S C S C S C S C S C S C S C S C TACN 28,2 28,5 7,9 7,9 0 27,1 27,7 7,7 7,7 0,05 0,025 28,1 28,6 7,9 7,9 0,075 0,05 27,5 28,5 8,5 8,5 0,075 0,05 26,4 27,0 8,3 8,2 0,2 0,1 27 27,3 7,9 8,1 0,15 26,8 27,0 C +TACN 28,2 28,6 8,2 8,1 0 26,5 27,9 7,7 7,7 0,075 0,05 28,8 29,8 7,9 7,9 0,15 0,05 27,0 28,0 8,4 8,3 0,1 0,1 27,1 27,0 8,5 8,3 0,2 0,1 27,5 27,7 7,8 8,0 0,1 27,1 27,5 29,9 30,0 7,9 7,9 0 29,5 28,7 7,6 7,8 0,01 0,05 28,2 28,9 7,8 7,8 0,1 0,05 26,6 27,5 8,3 8,1 0,1 0,05 26,5 27,2 8,4 8,4 0,2 0,2 28,1 28,5 7,9 7,9 0,1 26,7 26,8 31 pH NH 4+ N-NO2 1/11/2012 pH NH 4+ N-NO2 15/11/2012 pH NH 4+ N-NO2 - S C 8,0 8,1 0,1 28,3 29,0 8,5 8,4 0,1 28,7 29,0 8,1 8,2 0,5 0,05 S C S C S C S C 8,3 8,2 0,2 0,1 27,9 28,5 8,3 8,3 0,1 29,0 29,5 8,3 8,3 0,5 0,01 8,2 8,3 0,2 0,1 28,0 28,7 8,1 8,2 0,1 0,15 28,5 28,8 8,2 8,1 0,2 0,05 32 [...]... Perciformes Lates calcarifer (Bloch, 179 0) Lates calcarifer Bloch, 179 0) Lates calcarifer 3 - - hay -5 kg Khi g thành ng và di g có 8-10 cm au -5 cm c tình hình nuôi cá ch m 4 Lates calcarifer (Bloch, 179 0) là loài có giá tr - 5 (http://www.fistenet.gov.vn) Nam) con/m2 á có g/con (nhóm 100 110 mm) t 30,7%, -0,68 á sau 20 0,02-0,31 FCR là 6,8 ( ctv 2 ha, thành công http://www.agroviet.gov.vn) 6 ùa p ... 4.3.2 c 3 TACN TACN +Cá (cm/ngày) 0,15 1,30 0,14 1,21 0,10 1,03 cm/ngày) (5 7,5 %) (Hình 4. 3) 17 Thúy Nguyên (2 00 8) là 14,5% 100 TACN 80 60 40 20 0 1 tháng 2 tháng 3 tháng Hình 4.4: T 4.5 kg/m3 kg/m3 kg/m 3) 18 3 TACN TACN +Cá FCR ) 1,47 1,21 TACN 2,25 1,64 2,01 0,62 - 3,92 nuôi TACN TACN +Cá (con) 175 144 0,26 0,09 0,38 0,13 115 0,32 0,12 ng sau 3 tháng nuôi là 28,0 g/con 160 19 Hình 4.5: nuôi 22,5 cm/con... mg/l (Boyd, 198 2) 4.1.4 N-NO2-NO 2- - 0,09 (mg/L NO2 NO2 - NO 2- có hình thành N- NO2 ctv 0,2 mg/l - 4.2 uôi Lates calcarifer u là 2,99 g/con sau 1 tháng nuôi ông 13 b 120 b TACN 100 80 a 60 40 20 a a a 0 3 tháng Hình 4.1 cá trong quá trình nuôi 14 (1 5,4 cm/con) 15 25 c TACN 20 b a 15 10 a a a 5 0 3 tháng Hình 4.3 4.3.1 cá k 90 57 g/ngày) i các TACN 0,90 0,89 0,57 3,70 3,63 3,25 Lê Thúy K 16 /ngày) và... 100 10 : W Wc t DLG (g * theo ngày t : Lc L t ln Lc ln L SGR (% /ngày) = t : L Lc DLG (cm/ngày) = x 100 T l s ng (% ) = (s cá th cu i/s cá th ban * u) x 100 tháng nuôi CV = x 100 : X 3 3.5 3 ) lý s li u 11 4.1.1 27,9 o 28,2 o o o C Do n 32 o o -29 này o Sán g TACN C) Chi pH Sán g NH + Chi 4 NNO2(mg/l) (mg /l) 27,3±0,64 27,8±0,70 8,03±0,26 8,06±0,25 0,40±0,71 0,079±0,04 TACN+C 27,5±0,76 28,1±0,87 8,11±0,30... Ngu n cá thí nghi m Cá trung bình 2,88-3,19 g/con 10 m3 3.4 u 8 m3 c Cá 8-3,19 6,01-6,21 m3 tháng Hình 3.3: - 9 Protein Lipid 44,0 7,00 74,6 12,7 11,0 79,3 Tro 10,0 Uni-presidentVN 7,43 Lê Thúy Nguyên, 2008 - Hình 3.4: - + 3/NH 4 , test NO2 - NO2 + , Các * : Wc W DWG (g/ngày) = t ln Wc ln W SGR (% /ngày) = t x 100 10 : W Wc t DLG (g * theo ngày t : Lc L t ln Lc ln L SGR (% /ngày) = t : L Lc DLG (cm/ngày)... 19 Hình 4.5: nuôi 22,5 cm/con và là 19,0 cm/con cm/con 20 Hình 4.6: 21 K T LU XU T - (1 5,4 cm/con) 7 g/ngày và 0,10 cm/ngày) - nhau 22 TÀI LI U THAM KH O Psammoperca naigiensis) tro -25.11.2003 Trang 86 ctv http://www.agroviet.gov http://www.fistenet.gov.vn Dung 1994 -87 (Lates calcarifer, Bloch 179 0) ctv (Psammoperca waigiensis Oxyeleotris marmoratus Tr 2: 106-112 s http://www.fistenet.gov.vn... 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 (g/con) 2,89 2,93 3,13 3,01 3,21 2,92 2,65 3,35 3,05 2,84 2,85 2,94 3,08 3,15 2,75 2,63 2,47 2,77 2,35 4,04 2,49 2,13 3,93 4,28 2,47 3,01 4,22 2,98 2,78 2,52 (cm/con) 5,7 6,0 6,7 6,0 6,7 5,8 5,5 6,8 6,0 6,5 5,5 6,5 6,0 6,4 5,9 5,6 5,2 6,1 5,6 6,5 5,9 5,7 6,0 6,2 5,7 5,9 7,0 5,8 5,7 5,5 (g/con) 3,60 3,18 3,59 4,17 3,27 3,77 2,46 4,29 3,72 2,61 3,60... 2,30 3,01 2,59 3,94 3,11 4,67 2,66 3,87 2,81 2,78 2,43 (cm/con) 6,2 6,3 6,8 7,2 6,3 6,5 5,6 6,5 6,4 6,0 6,2 7,0 6,4 6,4 5,7 5,3 6,0 6,2 5,3 5,4 6,0 6,0 7,2 6,3 7,3 6,0 6,5 6,1 5,9 5,4 (g/con) 3,11 3,14 3,29 2,74 2,28 3,72 2,13 1,96 2,74 3,10 2,40 2,86 1,98 2,93 3,38 4,16 3,83 2,94 3,19 1,74 2,80 3,57 3,12 2,56 2,26 1,64 3,76 3,12 3,05 2,85 (cm/con) 6,2 6,3 6,4 6,0 5,7 7,0 5,5 5,5 6,0 6,3 6,1 6,0 5,4... 22 23 24 25 26 27 28 29 30 (g/con) 24,15 16,05 24,45 19,54 7,49 15,78 9,97 19,82 10,95 18,09 18,74 17,85 10,85 15,72 19,50 11,53 17,35 17,23 13,86 10,88 17,08 20,14 13,45 18,43 23,63 17,54 14,66 16,93 16,05 11,09 (cm/con) 12,7 10,7 12,4 11,6 8,60 10,7 9,0 11,5 9,70 11,5 11,5 11,0 9,30 11,3 11,6 10,0 11,0 11,7 10,5 9,70 11,0 12,0 10,6 11,5 12,3 11,5 10,4 11,6 10,7 9,50 (g/con) 19,60 12,20 17,62 18,43... 13,91 17,79 15,53 19,76 22,33 12,61 9,51 (cm/con) 11,5 10,0 11,7 11,2 10,5 10,6 10,5 9,3 10,4 11,5 10,0 11,8 9,6 8,5 10,4 10,5 9,1 9,9 11,0 12,0 11,0 10,0 11,0 10,0 11,0 10,6 11,7 11,3 10,0 9,5 (g/con) 8,73 7,51 10,42 6,07 4,41 6,37 8,35 6,75 6,52 6,82 6,32 5,58 11,98 7,07 9,62 7,94 8,12 6,06 7,74 11,3 6,06 7,62 8,56 7,43 7,07 10,09 4,25 8,63 9,26 10,28 (cm/con) 8,6 8,6 9,3 7,7 6,7 7,5 8,5 8,5 7,5 8,0 ... T V Lates calcarifer uôi Lates calcarifer Bloch, 179 0) 1.2 M c tiêu c tài 1.3 N i dung c tài m Chordata Perciformes Lates calcarifer (Bloch, 179 0) Lates calcarifer Bloch, 179 0) Lates calcarifer. . .Lates calcarifer Bloch, NHAU PGs Ts 2012 Khoa y i Lates calcarifer Bloch, 179 0) s m (i) TACN + cá tap, (ii) con/m3 3,19 g/con cá 2,88-6,21 cm/con NH +, NO 2cá ±22,0 g/con CN cá ± ± ii... + , Các * : Wc W DWG (g/ngày) = t ln Wc ln W SGR (% /ngày) = t x 100 10 : W Wc t DLG (g * theo ngày t : Lc L t ln Lc ln L SGR (% /ngày) = t : L Lc DLG (cm/ngày) = x 100 T l s ng (% ) = (s cá th