Laboratory of Aquabiotics / Nanoscience, Department of Animal Science, School of Life Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, 620 024, India.
Trop Anim Health Prod. 2021 Jan 13;53(1):119. doi: 10.1007/s11250-021-02558-w.
The present study investigated the effects of Aquamin® mineral mixture (AQMM) and Agrimin® mineral mixture (AGMM) supplemented diets on growth and chemical composition of juvenile freshwater prawn Macrobrachium malcolmsonii (H. Milne-Edwards, 1844). Experimental diets containing 6 different AQMM levels (Trial 1: 0, 0.5, 1.0, 1.5, 2.0, and 2.5%) and 6 different AGMM levels (Trial 2: 0, 0.5, 1.0, 1.5, 2.0, and 2.5%) were formulated to feed juvenile prawn [initial body weight of 0.82 ± 0.05 g (Trial 1) and 1.24 ± 0.03 g (Trial 2)] for 60 days. Prawn fed diets containing 1.0% of AQMM and AGMM showed significantly increased (P < 0.05) survival rate, weight gain, specific growth rate, protein efficiency ratio, edible flesh weight, and proximate composition (moisture, crude protein, crude fat, and ash), while feed intake and feed conversion ratio were significantly decreased (P < 0.05). Whereas, 1.5-2.5% of AQMM- and AGMM-supplemented diets fed prawn showed a reverse trend when comparing other groups. Moreover, the minerals (macro elements: Ca, P, Mg, Na, and K; trace elements: Cu, Zn, and Fe) were significantly increased (P < 0.05) in the carcass of prawn when fed with 2.5% AQMM- and AGMM-supplemented diets. The present results suggest that the optimal dietary supplementation of AQMM and AGMM at a concentration of up to 1.06 and 1.02%, respectively (based on polynomial regression analysis), improved growth and enhanced the crude protein level of juvenile prawn.
本研究调查了 Aquamin® 矿物质混合物 (AQMM) 和 Agrimin® 矿物质混合物 (AGMM) 补充饲料对淡水幼虾 Macrobrachium malcolmsonii（H. Milne-Edwards，1844）生长和化学成分的影响。实验饲料含有 6 种不同的 AQMM 水平（试验 1：0、0.5、1.0、1.5、2.0 和 2.5%）和 6 种不同的 AGMM 水平（试验 2：0、0.5、1.0、1.5、2.0 和 2.5%），用于喂养幼虾[初始体重为 0.82±0.05 g（试验 1）和 1.24±0.03 g（试验 2）]60 天。饲喂含有 1.0% AQMM 和 AGMM 的饲料的虾存活率、体重增加率、特定生长率、蛋白质效率比、可食用肉重和近似成分（水分、粗蛋白、粗脂肪和灰分）显著增加（P<0.05），而饲料摄入量和饲料转化率显著降低（P<0.05）。然而，1.5-2.5% AQMM 和 AGMM 补充饲料喂养的虾与其他组相比表现出相反的趋势。此外，当虾饲喂 2.5% AQMM 和 AGMM 补充饲料时，虾体中的矿物质（常量元素：Ca、P、Mg、Na 和 K；微量元素：Cu、Zn 和 Fe）显著增加（P<0.05）。本研究结果表明，AQMM 和 AGMM 的最佳膳食补充浓度分别高达 1.06%和 1.02%（基于多项式回归分析），可提高幼虾的生长速度并提高粗蛋白水平。
