摘要
本试验旨在探讨饲料维生素E含量对罗氏沼虾(Macrobrachium rosenbergii)生长性能、血清生化指标和肌肉品质的影响。选择平均初重为(0.243±0.003) g的健康罗氏沼虾幼虾750尾,随机分为5组,每组3个重复,每个重复50尾。各组分别投喂维生素E含量为0.6(对照)、103.4、207.1、412.9和631.7 mg/kg的5种等氮等能饲料。试验期62 d。结果表明:1)与对照组相比,103.4、207.1、412.9和631.7 mg/kg组的增重率和特定生长率显著增加(P<0.05),631.7 mg/kg组的肥满度显著升高(P<0.05)。2)与对照组相比,103.4 mg/kg组的血清谷丙转氨酶活性和总胆固醇含量显著降低(P<0.05); 207.1 mg/kg组的血清谷丙转氨酶、谷草转氨酶活性和总胆固醇含量显著降低(P<0.05); 631.7 mg/kg组的血清谷丙转氨酶活性显著降低(P<0.05),血清甘油三酯含量显著增加(P<0.05)。3)与对照组相比,103.4 mg/kg组的肌肉含肉率显著增加(P<0.05),肌肉滴水损失显著减少(P<0.05); 207.1 mg/kg组的肌肉含肉率显著增加(P<0.05),肌肉蒸煮损失显著减少(P<0.05); 631.7 mg/kg组的肌肉丙二醛含量显著降低(P<0.05); 207.1、412.9和631.7 mg/kg组的肌肉维生素E含量显著升高(P<0.05)。4)与对照组相比,103.4 mg/kg组的肌肉弹性显著提高(P<0.05); 207.1和412.9 mg/kg组的肌肉硬度、内聚性、耐咀性和胶黏性显著降低(P<0.05); 412.9 mg/kg组的肌肉嫩度显著提高(P<0.05)。经折线模型分析,以特定生长率、肌肉蒸煮损失为指标,得到罗氏沼虾饲料维生素E适宜含量分别为169.38、218.66 mg/kg。由此可知,饲料中添加169.38～218.66 mg/kg维生素E可促进罗氏沼虾生长,调节代谢,增强免疫,并有效改善肌肉品质。
The experiment was conducted to investigate the effects of dietary vitamin E content on growth performance,serum biochemical indices and muscle quality of giant freshwater prawn(Macrobrachium rosenbergii).A total of 750 healthy Macrobrachium rosenbergii juvenile shrimps with an initial body weight of(0.243±0.003) g were selected and randomly divided into 5 groups with 3 replicates per group and 50 shrimps per replicate.Shrimps in the 5 groups were fed 5 isonitrogenous and isoenergetic diets which contained 0.6(control),103.4,207.1,412.9 and 631.7 mg/kg vitamin E,respectively.The experiment lasted for 62 days.The results showed as follows:1) compared with the control group,the weight gain rate and specific growth ratio in 103.4,207.1,412.9 and 631.7 mg/kg groups were significantly increased(P< 0.05),the condition factor in 631.7 mg/kg group was significantly increased(P<0.05).2) Compared with the control group,the glutamic pyruvic transaminase activity and total cholesterol content in serum in 103.4 mg/kg group were significantly decreased(P<0.05);the glutamic pyruvic transaminase and glutamic pyruvic transaminase activities and total cholesterol content in serum in 207.1 mg/kg group were significantly decreased(P<0.05);the serum glutamic pyruvic transaminase activity in 631.7 mg/kg group was significantly decreased(P<0.05),and the serum triacylglycerol content was significantly increased(P < 0.05).3) Compared with the control group,the muscle flesh content in 103.4 group was significantly increased(P<0.05),and the muscle drip loss was significantly decreased(P < 0.05);the muscle flesh content in 207.1 group was significantly increased(P<0.05),and the muscle cooking loss was significantly decreased(P<0.05);the muscle malondialdehyde content in 631.7 mg/kg group was significantly decreased(P<0.05);the muscle vitamin E content in 207.1,412.9 and 631.7 mg/kg groups was significantly increased(P<0.05).4) Compared with the control group,the springiness of muscle in 103.4 mg/kg group was significantly increased(P<0.05);the hardness,cohesiveness,chewiness and gumminess of muscle in 207.1 and 412.9 mg/kg groups were significantly decreased(P<0.05);the tenderness of muscle in 412.9 mg/kg group was significantly increased(P<0.05).According to the broken-line regression analysis of specific growth ratio and cooking loss,we recommend the optimal dietary vitamin E content for Macrobrachium rosenbergii were 169.38 and 218.66 mg/kg,respectively.Based on our results,we conclude that dietary 169.38 to 218.66 mg/kg vitamin E can promote the growth performance,regulate the metabolism and enhance the immune,and effective improve the muscle quality of Macrobrachium rosenbergii.
作者
单凡
刘波
孙存鑫
周群兰
宋长友
张慧敏
杨震飞
SHAN Fan;LIU Bo;SUN Cunxin;ZHOU Qunlan;SONG Changyou;ZHANG Huimin;YANG Zhenfei(Wuxi Fisheries College,Nanjing Agricultural University,Wuxi 214081,China;Freshwater Fisheries Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2019年第1期214-225,共12页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
现代农业产业技术体系专项资金资助项目(CARS-48)
江苏省海洋与渔业重大科技项目(2017-3)
关键词
罗氏沼虾
维生素E
生长
血清生化指标
肌肉品质
Macrobrachium rosenbergii
vitamin E
growth
serum biochemical indices
muscle quality
