Effects of different additives on nursing effect of indoor seedling pond for young Cherax quadricarinatus
The purpose of this experiment is to explore the effect of different additives on the nursing effect of young Cherax quadricarinatus.A total of 10 800 Cherax quadricarinatus.were selected and randomly divided into six groups,with three repetitions in each group and 600 Cherax quadricarinatus.in each repetition.Group 1(control group)was fed basic feed,Group 2 was fed 70％basic feed+30％Spirulina powder,Group 3 was fed 80％basic feed+20％Spirulina powder,Group 4 was fed 80％basic feed+10％Spirulina powder+3％astaxanthin+2％linseed oil+3％Antarctic krill oil+2％riboflavin,Group 5 was fed 70％basic feed+10％Spirulina powder+6％astaxanthin+4％linseed oil+6％Antarctic krill oil+4％riboflavin,and Group 6 was fed 70％basic feed+20％Spirulina powder+3％astaxanthin+2％linseed oil+3％Antarctic krill oil+2％riboflavin.The experiment lasted for 10 days.The results showed that the survival rates of juveniles in Group 4 and Group 5 were significantly higher than those in Group 1 and Group 2(P＜0.05),with the survival rates ranking as follows:Group 4＞Group 5＞Group 3＞Group 6＞Group 2＞Group 1.Juveniles in Group 4 exhibited higher weight gain and total length increase rates,with the weight gain rates ranking as follows:Group 4＞Group 3＞Group 5=Group 6=Group 2＞Group 1,and the total length increase rates ranking as follows:Group 4＞Group 5＞Group 3＞Group 2＞Group 6＞Group 1.The activity of TPS,SOD,ACP,and AKP in juveniles from Group 4 was significantly higher than those in Group 1 and Group 2(P＜0.05).The results showed that Group 4 had a higher survival rate,growth rate,and immune related enzyme activities,that was,80％basic feed+10％Spirulina powder+3％astaxanthin+2％linseed oil+3％Antarctic krill oil+2％riboflavin had better effect.
国家科技期刊平台
NSTL
万方数据
维普
