The effects of concurrent supplementation of dietary phytase, citric acid and vitamin D3 on growth and mineral utilization in juvenile yellow catfish Pelteobagrus fulvidraco
The effects of concurrent supplementation of dietary phytase, citric acid and vitamin D3 on growth and mineral utilization in juvenile yellow catfish Pelteobagrus fulvidraco
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DOI：
10.1016/j.aquaculture.2014.11.006
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发表时间：
2015-01
期刊：
影响因子：
4.5
通讯作者：
Ya Zhu;Qiliang Ding;J. Chan;Pei Chen;Chunfang Wang
中科院分区：
文献类型：
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作者：
Ya Zhu;Qiliang Ding;J. Chan;Pei Chen;Chunfang Wang
本实验旨在评估植酸酶、柠檬酸和维生素 D3 对黄颡鱼 (Pelteobagrus fulvidraco) 幼鱼消化系数、生长性能、身体成分以及脊椎和血清矿物质含量的综合影响。该研究采用完全随机设计的 1200 条黄鲶鱼幼鱼，采用 2 × 2 × 2 阶乘排列（0 和 500 IU 植酸酶 kg−1 饲料、0 和 2 g 柠檬酸 kg− 1 饲料以及 2000 和 4000 IU 维生素 D3kg− 1 饲料）。每池初始体重为 3 g ± 0.0 g 的 50 条鱼，一式三组，喂饱八周。添加 500 IU 植酸酶 kg−1 饲料显着增加 (P < 0.05) 干物质和磷 (P) 的表观消化率、全身钠 (Na)、P、钙 (Ca)、镁 (Mg) 和锌 (Zn) 保留以及椎体 P、Ca 和 Zn 沉积。然而，植酸酶并没有增强黄颡鱼幼鱼的生长反应。添加2 g柠檬酸kg−1饲料显着提高（P < 0.05）增重（WG）和特定生长率（SGR），显着降低（P < 0.05）饲料转化率（FCR）。高水平的维生素 D3 显着增加 (P < 0.05) 全身 Na、K、P、Ca、Mg 和 Zn 保留，而低水平和高水平维生素 D3 补充之间在椎骨矿物质沉积、干物质、P 和蛋白质的表观消化率或生长性能方面没有差异。此外，没有观察到植酸酶、柠檬酸和维生素 D3 之间或之间对黄颡鱼幼鱼生长或矿物质利用的显着相互作用。
This experiment was conducted to evaluate the combined effects of phytase, citric acid and vitamin D3on the digestibility coefficients, growth performance, body composition, and vertebral and serum mineral contents in juvenile yellow catfish (Pelteobagrus fulvidraco). The study used 1200 juvenile yellow catfish in a completely randomized design with a 2 × 2 × 2 factorial arrangement (0 and 500 IU phytase kg− 1feed, 0 and 2 g citric acid kg− 1feed, and 2000 and 4000 IU vitamin D3kg− 1feed). Triplicate groups of 50 fish with an initial single body weight of 3 g ± 0.0 g per tank were fed to satiety for eight weeks. 500 IU phytase kg− 1feed addition significantly increased (P < 0.05) the apparent digestibilities of dry matter and phosphorous (P), whole body sodium (Na), P, calcium (Ca), magnesium (Mg) and zinc (Zn) retention, and vertebral P, Ca and Zn deposition. However, phytase did not enhance the growth response of juvenile yellow catfish. The addition of 2 g citric acid kg− 1feed significantly increased (P < 0.05) weight gain (WG) and specific growth rate (SGR), and significantly decreased (P < 0.05) feed conversion ratio (FCR). High levels of vitamin D3significantly increased (P < 0.05) whole body Na, K, P, Ca, Mg and Zn retention while no difference in vertebral mineral deposition, the apparent digestibility of dry matter, P and protein, or growth performance between low and high levels of vitamin D3supplementation was observed. In addition, no significant interactions were observed among or between phytase, citric acid and vitamin D3on the growth or mineral utilization of juvenile yellow catfish.