CAJ | 학술논문

为了研究海藻饲料对刺参Apostichopus japonicus幼参生长效果的影响,在水温(18±1)℃下,将体质量(1.25±0.02) g的幼参饲养在容积为25 L的塑料水槽中,每槽6头,投喂采用孔石莼Ulva pertusa、角叉菜Chondrus ocellatus、裙带菜Undaria pinnatifida干粉及其混合干粉、鲜孔石莼、鲜角叉菜、鲜裙带菜及其混合磨碎液与25%海泥制成的8种饲料,共饲养60 d,试验结束时测定幼参的生长情况和水体中的氨氮含量。结果表明：投喂不同海藻饲料的幼参存活率均在80%以上,组间无显著性差异( P>0.05)；投喂鲜孔石莼饲料的幼参体质量增长最快,特定生长率为(1.38±0.13)%/d,显著高于其他组(P<0.05)；投喂鲜孔石莼饲料的幼参饲料转化率显著高于其他组(P<0.05),而其他组间无显著性差异(P>0.05),此组的摄食率和排粪率均为最高,且与其他组有显著性差异(P<0.05)；鲜孔石莼组水体的平均氨氮含量最低,为(0.005±0.003) mg/L,孔石莼干粉组最高,为(0.021±0.016) mg/L,两者有显著性差异(P<0.05)。研究表明,投喂鲜孔石莼时幼参的生长效果最好,对水体的氨氮含量影响较小,在刺参幼参培育中添加鲜孔石莼效果较好。
위료연구해조사료대자삼Apostichopus japonicus유삼생장효과적영향,재수온(18±1)℃하,장체질량(1.25±0.02) g적유삼사양재용적위25 L적소료수조중,매조6두,투위채용공석순Ulva pertusa、각차채Chondrus ocellatus、군대채Undaria pinnatifida간분급기혼합간분、선공석순、선각차채、선군대채급기혼합마쇄액여25%해니제성적8충사료,공사양60 d,시험결속시측정유삼적생장정황화수체중적안담함량。결과표명：투위불동해조사료적유삼존활솔균재80%이상,조간무현저성차이( P>0.05)；투위선공석순사료적유삼체질량증장최쾌,특정생장솔위(1.38±0.13)%/d,현저고우기타조(P<0.05)；투위선공석순사료적유삼사료전화솔현저고우기타조(P<0.05),이기타조간무현저성차이(P>0.05),차조적섭식솔화배분솔균위최고,차여기타조유현저성차이(P<0.05)；선공석순조수체적평균안담함량최저,위(0.005±0.003) mg/L,공석순간분조최고,위(0.021±0.016) mg/L,량자유현저성차이(P<0.05)。연구표명,투위선공석순시유삼적생장효과최호,대수체적안담함량영향교소,재자삼유삼배육중첨가선공석순효과교호。
Juvenile sea cucumber Apostichopus japonicas with body weight of (1. 25±0. 02)g was reared in a 25 L plastic tank at a rate of 6 individuals each tank and fed 8 diets containing various proportions of fresh seaweeds ( sea lettuce Ulva pertusa, chondrus Chondrus ocellatus, sea mustard Undaria pinnatifida) and powder and 25% sea mud for 60 days to evaluate the effects of different seaweed diets on the growth of sea cucumber juveniles at water tem-perature of (18±1)℃. Ammonia nitrogen level in water and growth were measured at the end of the feeding trial. The results showed that there were no significantly differences in survival rates ( over 80%) of sea cucumber fed different diets (P>0. 05). However, there were significant higher specific growth rate [(1. 38±0. 13)%/d] and food conversion efficiency in the sea cucumber juveniles fed fresh sea lettuce than those in the other diet groups ( P<0 . 05 ) , without significantly differences in food conversion efficiency among the other diet groups ( P>0 . 05 ) . There was the maximal food ingestion rate and fecal production rate in the sea cucumber fed fresh sea lettuce, sig-nificantly different from those in the sea cucumber fed other diets (P<0. 05 ). At the end of the experiment, there was the minimal ammonia nitrogen concentration [(0. 005±0. 003)mg/L] in the water where the sea cucumber ju-veniles fed fresh sea lettuce were reared, and there was the maxima ammonia nitrogen concentration [(0. 021 ± 0. 016)mg/L] in the water where the sea cucumber juveniles fed sea lettuce powder were reared, with significant difference between them (P<0. 05). The findings indicate that the sea cucumber juveniles have good growth, and the ammonia nitrogen concentration in the water is kept low when they are fed fresh sea lettuce.