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Effect of water temperature, feeding frequency, and protein percent in the diet on water quality, growth and behavior of Nile tilapia Oreochromis niloticus (Linnaeus, 1758)
Journal of Applied Ichthyology ( IF 0.9 ) Pub Date : 2021-03-07 , DOI: 10.1111/jai.14193
Sara A. Hamed 1 , Ahmed Abou‐Elnaga 2 , Abdallah S. Salah 1 , Abdel‐Hay M. Abdel‐Hay 1 , Mohamed M. Zayed 1 , Taha Soliman 3, 4 , Radi A. Mohamed 1
Affiliation  

This study evaluated how water temperature (26, 28, and 30°C), number of meals per day (one or two meals), and protein percent in diet (20, 25 and 30%) impact growth performance, biometric indices, and feeding behavior of Nile tilapia, Oreochromis niloticus. Fish were randomly allocated into 18 equal replicate groups. Higher final body weight was observed in fish reared at 30°C and fed one meal per day containing 30% crude protein. Better weight gain, weight gain %, feed conversion ratio, specific growth rate, and condition factor were recorded in fish reared at 26°C and fed one meal per day containing 30% protein. The best length weight relationship was obtained in fish reared at 26°C and fed one meal per day containing 30% crude protein. Shorter feeding duration and duration of appetite inhibition latency were recorded in fish reared at 30°C, fed one meal per day, and given a diet containing 30% protein. The highest proactivity was recorded in fish reared at 30°C, received one meal per day, and with 25% crude protein in their diet. Conclusively, rearing Nile tilapia at 26–30°C with a lower feeding frequency (one meal/day) and a 30% crude protein diet achieved better performance and feeding behavior.

中文翻译:

日粮中水温,进食频率和蛋白质含量对尼罗罗非鱼尼罗罗非鱼水质,生长和行为的影响(Linnaeus,1758年)

这项研究评估了水温(26、28和30°C),每日进餐次数(一餐或两餐)和饮食中的蛋白质百分比(20%,25%和30%)如何影响生长性能,生物测定指标和喂养尼罗罗非鱼的行为,尼罗罗非鱼。将鱼随机分为18个相同的重复组。在30°C饲养的鱼中观察到更高的最终体重,每天喂食一顿含30%粗蛋白的食物。在26°C饲养的鱼中每天记录更好的增重,增重%,饲料转化率,比生长率和条件因子,每天进食一顿含30%蛋白质的鱼。在26°C饲养的鱼中获得最佳的长度重量关系,每天喂食一顿含30%粗蛋白的食物。在30°C下饲养,每天进食一顿且饮食中蛋白质含量为30%的鱼中,记录的进食时间和食欲抑制潜伏期较短。在30°C饲养,每天进食一顿且日粮中含25%粗蛋白的鱼中,记录的最高活性。最后,
更新日期:2021-03-07
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