COMBINED EFFECTS OF STOCKING DENSITY AND BACKGROUND COLOUR ON GROWTH PERFORMANCE AND SURVIVAL OF NILE TILAPIA (Oreochromis niloticus, L.) FRY REARED IN AQUARIA
COMBINED EFFECTS OF STOCKING DENSITY AND BACKGROUND COLOUR ON GROWTH PERFORMANCE AND SURVIVAL OF NILE TILAPIA (Oreochromis niloticus, L.) FRY REARED IN AQUARIA
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DOI：
10.3153/jfscom.201429
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发表时间：
2014-06
期刊：
影响因子：
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通讯作者：
M. Opiyo
中科院分区：
文献类型：
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作者：
M. Opiyo
研究了水池背景颜色和放养密度对尼罗罗非鱼 (Oreochromis niloticus) 鱼苗 (0.32 g) 生长速率和存活率的影响。将鱼饲养在具有蓝色、黑色和透明背景的水族箱中，以2条鱼L-1和4条鱼L-1的两种放养密度进行饲养。每个水族箱的外壁和底部都被涂漆以实现两种颜色（蓝色和黑色）中的一种，而无色（透明）水族箱作为对照。这些鱼每天喂食商业饲料（40%粗蛋白），每日喂食量为体重的5%，每天两次，持续70天。蓝色背景下2鱼L-1放养密度下饲养的幼体获得了最佳的生长率、增重、特定生长率、食物转化率和存活率。鱼的生产性能显着（P
The effect of tank background colour and stocking density on growth rates and survival of Nile tilapia (Oreochromis niloticus) fry (0.32 g) were investigated. The fish were reared in aquari-um with blue, black and clear backgrounds at two stocking densities of 2 fish L-1 and 4 fish L-1. The outside walls and bottoms of each aquarium were painted to achieve one of two colours (blue and black), while noncoloured (clear) aquarium served as a control. The fish were fed a commercial diet (40% crude protein) at a daily rate of 5% of their body weight twice a day for 70 days. The best growth rates, weight gain, specific growth rate, food conversion ratio and survival were achieved in larvae reared under 2 fish L-1 stocking density in the blue back-ground. Fish performance was significantly (P