摘要
为研究不同水平的酵母硒对鲤鱼(Cyprinus carpio)鱼种生长性能、肌肉硒沉积量及抗病能力的影响,试验采用单因子完全随机设计,选用体重约为30 g/尾的鲤鱼鱼种,随机分为5个试验组(A1~A5,A1为空白组)和1个对照组(A6),每组3个重复,每个重复60尾。第A1~A5组分别在基础日粮中添加0、0.15、0.30、0.45、0.60 mg/kg的酵母硒,对照组在基础日粮中添加0.60 mg/kg的亚硒酸钠(Na2SeO3),试验周期为12周。分别对其生长性能指标、肌肉硒沉积量进行测定以及抗病能力进行检测。结果表明:(1)与对照组(A6)和空白组(A1)相比,鲤鱼的末重、增重率及特定生长率(SGR)均随日粮中酵母硒添加量水平的提高逐渐增大,其中以添加0.6 mg/kg酵母硒试验组的结果最高,分别为末重:(94.85±10.13)g,增重率:(217.89±36.12)%(P<0.05),SGR:(2.05±0.2)%/d。饵料系数则随日粮中酵母硒添加量水平的提高而降低,0.6 mg/kg酵母硒试验组的饵料系数最低,为(1.25±0.15);(2)0.6 mg/kg酵母硒试验组的肌肉硒沉积量为所有试验组中最大,为(0.47±0.02)mg/kg;(3)嗜水气单胞菌攻毒后空白组在第12天所有鱼均死亡,其余添加不同组分硒添加剂的试验组均有一定的保护效果,以0.6 mg/kg酵母硒试验组相对保护率最高,为46.67%。综上,在本研究中,在基础日粮中添加一定量的酵母硒可有效促进鲤鱼生长,提高饲料利用率,增加肌肉硒沉积量,提高鲤鱼的抗病能力,添加量以0.6 mg/kg为适宜。
In order to study the effects of different levels of selenium-yeast on growth performance,muscle selenium deposition and disease resistance of carp(Cyprinus carpio)fingerlings,experiment adopts a single factor completely random design,carp fingerlings weighing about 30 g/tail,and randomly divided into 5 test groups(A1~A5,A1 was the blank group)and control group(A6),3 repetitions in each group and 60 for each repetition.In the A1~A5 groups added 0,0.15,0.30,0.45,0.60 mg/kg of selenium-yeast,and the control group was added to the basal diet 0.60 mg/kg sodium selenite(Na2SeO3),and the test period was 12 weeks,then,test the growth performance indicators,muscle selenium deposition and disease resistance respectively.The results showed that:(1)Compared with the control group(A6)and blank group(A1),the carp's final weight,weight gain rate and specific growth rate(SGR)gradually increased with the increase in the level of selenium-yeast in the diet.The 0.6 mg/kg selenium-yeast test group was the highest,which were final weight:(94.85±10.13)g,weight gain rate:(217.89±36.12)%(P<0.05),SGR:(2.05±0.2)%/d.The feed coefficient decreased with the increase of the added level of selenium-yeast in the diet,the 0.6 mg/kg selenium-yeast test group had the lowest feed coefficient,which was(1.25±0.15).(2)The amount of selenium deposition in the muscle tissue of the test group increased with the increase of the added amount of selenium-yeast in the diet.The 0.6 mg/kg selenium-yeast test group was the largest among all the test groups,which was(0.47±0.02)mg/kg.(3)After A.hydrophila challenged,all fish in the blank group died on the 12th day,and the other test groups added with different components of selenium additives had certain protective effects.The 0.6 mg/kg selenium-yeast test group was relatively protected the highest rate,which was 46.67%.In summary,in our study,adding a certain amount of selenium-yeast to the carp fingerling diet could effectively promote the growth,increase feed utilization,the amount of selenium deposit in
作者
刘家星
陶丽竹
杨马
陈健
李良玉
魏文燕
陈霞
唐洪
张小丽
杨壮志
LIU Jiaxing;TAO Lizhu;YANG Ma;CHEN Jian;LI Liangyu;WEI Wenyan;CHEN Xia;TANG Hong;ZHANG Xiaoli;YANG Zhuangzhi(Institute of Fisheries of Chengdu Agriculture and Forestry Academy,Chengdu,Sichuan Province 611130,China)
出处
《中国饲料》
北大核心
2021年第19期43-48,共6页
China Feed
基金
四川省科技计划资助(2020年农业农村领域重点研发关键技术攻关项目)(2020YFN0060)
2020年农业农村部农业重大技术协同推广计划试点四川省稻渔综合种养关键技术集成与推广应用项目。
关键词
酵母硒
鲤鱼
生长性能
肌肉硒沉积量
抗病能力
selenium-yeast
Cyprinus carpio
growth performance
muscle selenium deposition
disease resistance
