Effects of ash and inorganic phosphorus in diets on growth and mineral composition of seabass Lates calcarifer (Bloch)
Effects of ash and inorganic phosphorus in diets on growth and mineral composition of seabass Lates calcarifer (Bloch)
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DOI：
10.1046/j.1355-557x.2001.00035_32_s1.x
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发表时间：
2001-12-01
影响因子：
2
通讯作者：
Boonyaratpalin, M
中科院分区：
文献类型：
--
作者：
Chaimongkol, A;Boonyaratpalin, M
平均质量1.28克的鲈鱼鱼种分别饲喂低灰分日粮（日粮1-4）和高灰日粮（日粮5-8），并分别添加含磷0、0.25、0.50和1.0%的磷酸二氢钠。在流通系统中，每天两次将鱼喂饱，持续 12 周。结果表明，测试水平的膳食灰分和补充磷对生长没有显着影响。低灰分日粮中添加0.5%和1.0%磷可使全身磷显着增加，补充0.5%磷可使全身锌显着增加。骨骼中 P 和 Zn 含量最高的是饲喂鱼的日粮 2。饲喂低灰分日粮的鱼的蛋白质表观消化率显着高于饲喂高灰分日粮的鱼，饲喂低灰分日粮的鱼的钙、镁、磷和锌保留率显着高于饲喂高灰分日粮的鱼。结果表明，不添加磷的低灰分饲料可以满足鱼类生长和骨骼矿化的需要，不会对其他矿物质的利用造成不利影响，并且比高灰分饲料污染更小。
Seabass fingerling of average mass 1.28 g were fed with low-ash diets (diets 1-4) and high-ash diets (diets 5-8) supplemented with mono-sodium phosphate containing phosphorus at 0, 0.25, 0.50 and 1.0%, respectively. Fish were fed to satiation twice daily for 12 weeks in a flow-through system. The results indicated that dietary ash and supplemented P at tested levels had no significant effects on growth. The supplementation of 0.5 and 1.0% P in low-ash diet resulted in significantly increased whole-body P, and supplemented P at 0.5% led to a significant increase in whole-body zinc. The highest levels of P and Zn in bones were noted in fish fed diet 2. Apparent digestibility of protein in fish fed low-ash diets was significantly higher than in fish fed high-ash diets, Calcium, magnesium, P and Zn retention in fish fed low-ash diets were significantly higher than in fish fed high-ash diets. The results indicate that low-ash diets without supplemented P satisfy the needs of the fish for growth and bone mineralization without causing adverse effects on the utilization of other minerals and pollutes less than high-ash diets.