摘要
团头鲂幼鱼在摄食添加不同脂肪源脂质的饵料饲养4周后,脂质添加组团头鲂体重增加快,与对照组比均有显著差异;试验组鲢鱼油添加组和大豆油添加组的鱼体增重速度快,相对增重率分别为113.9%、117.9%,饵料系数分别为2.43、2.24。鲱鱼油添加组及对照组的相对增重率分别为98.1%、85.1%:饵料系数分别为2.84、2.95。鲢鱼油添加组鱼体脂质作用最好:大豆油添加组鱼体背部肌肉脂质积累较好;而鲱鱼油添加组有内脏脂质积累的表现。这说明,改变饵料的脂肪源及提高饵料中脂质含量可影响团头鲂幼鱼的生长和组成,鲢鱼油是优良的团头鲂饵料脂肪源。
The dietaries with different fat sources---silver oil,soybean oil and menhaden oil were used for feeding tests of Blunt Snout Bream for 4 weeks.The growth rate,feed conversion rate and ingredients of the back muscle and viscera of Blunt Snout Bream were compared to study the relation between dietaries fat sources and fish growth and ingredients.Result shows:the fish groups fed with oil added dietaries had higher growth rate than non-oil added of that,significantly.The fish groups fed with sliver oil added and soybean oil added dietaries gained the better growth than others.The growth rates of 113.9% and 117.9% and FCR were 2.43 and 2.24, respectively.The growth rates of the fish groups fed with manhaden oil added and non-oil added dietaries were 98.1%,85.1% and FCR were 2.84,2.95,respectively.The fish group fed with sliver oil added dietary had most fat stored in all part of fish and more fat stored in back muscle of the soybean oil added dietary,while more fat stored in viscera.The results suggest that the silver oil and soybean oil are good sources for the dietary of Btunt Snout Bream and enough fat in the dietary is good for fish.
