饲料蛋白水平对匙吻鲟幼鱼肌肉营养成分的影响  

Effect of dietary protein level on muscle nutrient composition of juvenile Polyodon spathula

作　　者：王黔海 WANG Qianhai(Tongren City Dejiang County Agriculture and Rural Bureau,Dejiang 565200,Guizhou China)

机构地区：[1]贵州省铜仁市德江县农业农村局,贵州德江565200

出　　处：《黑龙江水产》2024年第3期297-299,共3页Northern Chinese Fisheries

摘　　要：该试验旨在研究饲料中蛋白含量对匙吻鲟(Polyodon spathula)幼鱼肌肉营养成分的影响,确定匙吻鲟生长所需的最适饲料蛋白水平。试验选择300尾体重相近、健康、无病的匙吻鲟将其均分5组,每组3个重复,每个重复20尾匙吻鲟。各组匙吻鲟分别投喂不同蛋白水平的饲料,其中试验1组的粗蛋白含量为36.05%,试验2组的粗蛋白含量为38.06%,试验3组的粗蛋白含量为40.1%,试验4组的粗蛋白含量为41.98%,试验5组的粗蛋白水含量44.05%。试验期为8周,试验结束采集各组匙吻鲟的肌肉样品检测其营养成分。结果显示,匙吻鲟投喂粗蛋白含量为40.1%和41.98%的饲料,可以使其肌肉中的粗蛋白水平显著高于饲喂粗蛋白含量为36.05%的饲料组(P<0.05);匙吻鲟投喂粗蛋白含量为40.1%和41.98%的饲料,可以使其肌肉中的粗脂肪水平显著高于投喂粗蛋白含量为36.05%、38.06%和44.05%的饲料组(P<0.05)。研究表明,匙吻鲟饲喂饲料粗蛋白质含量为40.1%~41.98%时,其肌肉营养价值较高。This experiment was conducted to investigate the effects of dietary protein content on muscle nutrients of juvenile fish Polyodon spathula,and to determine the optimal dietary protein level required for growth of the fish.A total of 300 healthy Polyodon spathula with similar body weight and no disease were divided into 5 groups with 3 replicates per group and 20 Polyodon spathula per replicate.Each group was fed diets with different protein levels,in which the protein content of test group 1 was 36.05%,the protein content of test group 2 was 38.06%,the protein content of test group 3 was 40.1%,the protein content of test group 4 was 41.98%,and the protein water content of test group 5 was 44.05%.The experiment lasted for 8 weeks.At the end of the experiment,muscle samples of each group of spoon sturgeon were collected to detect their nutritional composition.The results showed that the crude protein level in muscle of Polyodon spathula fed diet with protein content of 40.1%and 41.98%was significantly higher than that of feed group with protein content of 36.05%(P<0.05).The level of crude fat in muscle of Polyodon spathula fed diet with protein content of 40.1%and 41.98%was significantly higher than that of feed groups with protein content of 36.05%,38.06%and 44.05%(P<0.05).The study showed that when the protein content of the feed was 40.1%~41.98%,the muscle nutrition value of the fish was higher.

关 键 词：蛋白含量 肌肉 营养成分 匙吻鲟(Polyodon spathula) 

分 类 号：S965.215[农业科学—水产养殖]