Effects of dietary lipid source on reproductive performance and tissue lipid levels of Nile tilapia Oreochromis niloticus (Linnaeus) broodstock
Effects of dietary lipid source on reproductive performance and tissue lipid levels of Nile tilapia Oreochromis niloticus (Linnaeus) broodstock
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DOI：
10.1111/j.1439-0426.1993.tb00385.x
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发表时间：
1993-04
影响因子：
0.9
通讯作者：
C. Santiago;O. Reyes
中科院分区：
文献类型：
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作者：
C. Santiago;O. Reyes
给尼罗罗非鱼喂食补充有5%水平的以下脂质来源之一的饮食：鱼肝油、玉米油、大豆油、基于椰子油的食用油或鱼肝油和玉米油（1：1）的组合。对照组饮食没有脂质补充剂，只有少量鱼粉作为唯一的蛋白质来源。还测试了以豆粕作为蛋白质来源的饮食。除鱼肝油外，补充脂肪源均不同程度地增加了产卵雌鱼数量、产卵频率、每次产卵鱼苗数量和鱼苗总产量。在24周的时间里，喂食豆油的鱼的总体繁殖性能最好。喂食鱼肝油的鱼体重增加最多，但繁殖能力最差。补充脂质显著增加肝脏和卵巢中的粗脂肪水平。无论是雄性还是雌性，食用鱼肝油的动物肝脏和肌肉中的脂肪含量都最高。肝脏、卵巢和睾丸中总n-6/n-3脂肪酸的比例受补充脂肪源的影响。它是最高的鱼喂养的大豆油饮食，玉米油饮食，或豆粕饮食和最低的鱼喂养的控制饮食或鱼肝油饮食。
Summary Nile tilapia were fed diets supplemented with one of the following lipid sources at 5% level: cod liver oil, corn oil, soybean oil, a coconut oil-based cooking oil or a combination of cod liver oil and corn oil (1 : 1). The control diet had no lipid supplement and tad fish meal as a sole protein source. A diet with soybean meal as a protein source was also tested. The number of females that spawned, spawning frequency, number of fry per spawning, and total fry production were increased at varying degrees by the supplemental lipid sources except for the cod liver oil. Fish fed the soybean oil diet tad the best overall reproductive performance over a 24-week period. Fish fed the cod liver oil diet had the highest weight gain but the poorest reproductive performance. The suplemental lipids significantly increased crude fat levels in the liver and ovaries. Both males and females Ld the cod liver oil diet had the highest levels of fat in the liver and muscle. The ratio of total n-6/n-3 fatty acid in the liver, ovaries and testes was influenced by the supplemental lipid sources. It was highest in fish fed either the soybean oil diet, the corn oil diet, or the soybean meal diet and lowest in fish fed the control diet or the cod liver oil diet.