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Mineral supplementation in biofloc influences growth and haemato-biochemical indices of Genetically Improved Farmed Tilapia reared in inland saline ground water
Aquacultural Engineering ( IF 4 ) Pub Date : 2023-12-12 , DOI: 10.1016/j.aquaeng.2023.102386
Susitharan , Sreedharan Krishnan , Pankaj Kumar , Kapil Sukhdhane , A. Sathiya Kala , A.M. Babitha Rani

An experiment for a period of 60 days was performed with species specific mineral supplementation in biofloc system for GIFT tilapia reared in inland saline water. Four different concentrations of formulated mineral mixture (10, 15, 20, 25 g L−1) were supplemented in the subculture of biofloc inoculum for different treatments (T1, T2, T3, and T4). In contrast, two control groups (conventional culture system (C) and a standard biofloc control (BC) devoid of mineral supplements) were maintained. Major water quality parameters were optimal except alkalinity and pH, which were fluctuated in the treatment groups, and higher turbidity was noticed only in the T4 group. The minerals supplemented groups had lower levels of TAN, nitrite (NO2) and nitrate (NO3) than conventional biofloc system (BC). Floc parameters such as floc volume, total suspended solids (TSS), total dissolved solids (TDS) and total solids (TS) were higher than the control. Haematological parameters Hb (haemoglobin) and WBC (white blood corpuscles) of fish reared in treatments were higher, ranging from (8.2 ± 0.64 −10.47 ± 0.66 g dL−1) and (187.83–215.17 ± 6.58 per cumm) respectively (P < 0.05) compared to both the controls. Serum parameters of fish was recorded to be higher in T2. The proximate composition analysis revealed an enhanced crude protein content (33.22 ± 1.00%, 67.68 ± 0.2%) and crude lipid (5.24 ± 0.22% & 15.18 ± 0.58%) (P > 0.05) content from BC, but ash content (39.11 ± 0.1% & 20.35 ± 0.21%) from T4 in both dried biofloc and fish samples were higher than rest of the groups. Specific growth rate (SGR) and weight gain (WG) were recorded to be significantly higher in the T2 group. Feed conversion ratio (FCR) was observed to be better in all the treatments and the BC group than conventional control. The current investigation showed that subculture of biofloc inoculum supplemented with formulated mineral mix of 15 g L−1 could be effective in terms of water quality maintenance, feed utilization, growth, survival and biochemical parameters of GIFT tilapia reared in inland saline ground water.



中文翻译:

生物絮团中矿物质的补充影响内陆咸水​​养殖的转基因罗非鱼的生长和血液生化指数

在内陆盐水中饲养的 GIFT 罗非鱼的生物絮凝系统中进行了为期 60 天的实验,添加了物种特异性矿物质。在不同处理(T1、T2、T3和T4)的生物絮团接种物的传代培养物中补充四种不同浓度的配制矿物质混合物(10、15、20、25g L -1 )。相比之下,维持两个对照组(传统培养系统(C)和不含矿物质补充剂的标准生物絮凝对照(BC))。除碱度和 pH 值在处理组中有所波动外,主要水质参数均为最佳,仅在 T4 组中观察到较高的浊度。补充矿物质组的 TAN、亚硝酸盐 (NO 2 ) 和硝酸盐 (NO 3 ) 水平低于传统生物絮凝系统 (BC)。絮体体积、总悬浮固体(TSS)、总溶解固体(TDS)和总固体(TS)等絮体参数均高于对照。处理中饲养的鱼的血液学参数 Hb(血红蛋白)和 WBC(白细胞)较高,范围分别为(8.2 ± 0.64 −10.47 ± 0.66 g dL −1)和(187.83–215.17 ± 6.58/cumm)(P < 0.05)与两个对照相比。鱼的血清参数在 T2 时记录较高。近似成分分析显示,BC 的粗蛋白含量(33.22 ± 1.00%、67.68 ± 0.2%)和粗脂含量(5.24 ± 0.22% 和 15.18 ± 0.58%)(P > 0.05)有所增加,但灰分含量(39.11 ±干燥生物絮团和鱼样品中 T4 的含量(0.1% 和 20.35 ± 0.21%)均高于其他组。T2 组的特定生长率 (SGR) 和体重增加 (WG) 显着更高。观察到所有处理组和 BC 组的饲料转化率 (FCR) 均优于传统对照。目前的研究表明,添加15 g L -1配制矿物质混合物的生物絮团接种物继代培养对于内陆咸水养殖的GIFT罗非鱼的水质维持、饲料利用率、生长、存活和生化参数方面可以有效。

更新日期:2023-12-12
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