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| 乳铁蛋白对大黄鱼仔鱼生长、存活和抗应激能力影响的研究 |
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王秋荣1,2, 何 峰1,2, 林利民1,2, 王志勇1,2, 刘贤德1,2
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1.集美大学水产学院;2.福建省高校水产科学技术与食品安全重点实验室
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| 摘要: |
| 用不同水平(分别为T1 组: 0 mg/L; T2 组: 50 mg/L; T3 组: 100 mg/L; T4 组: 150 mg/L)乳铁蛋白(lactoferrin, 简称LF)强化的卤虫(Artemia franciscana)幼体投喂9～23 日龄大黄鱼(Pseudosciaena crocea)仔鱼。结果表明, 摄食LF 强化卤虫幼体的大黄鱼仔鱼其生长无明显改善(P>0.05), 但大黄鱼仔鱼的成活率和抗应激能力显著提高, T3(60%)和T4(80%)组的成活率显著高于T1(40%)和T2(30%)组(P<0.05)。T4 组大黄鱼仔鱼的耐干露能力最强, T4 组和T3 组的抗高盐度(65)应激能力明显的强于T1 和T2 组(P<0.05), T4 组和T3 组之间无明显的差异(P>0.05)。经4 h 高温(32°C)曝露后, T1 和T2 组的仔鱼全部死亡, T4 组和T3 组的成活率分别为30%和23.3%。即仔鱼的成活率和抗应激能力受卤虫强化LF 水平的影响显著, LF 强化的有效剂量为不低于100 mg/L 强化水体。 |
| 关键词: 大黄鱼(Pseudosciaena crocea) 抗应激 乳铁蛋白 卤虫(Artemia franciscana)幼体 |
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| 基金项目:福建省自然科学基金资助项目(2007J0331); 国家863 计划资助项目(2006AA10A405); 集美大学科研基金资助项目(ZQ2005002) |
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| Effect of bovine lactoferrin on the growth, survival and stress resistance of Pseudosciaena crocea larvae |
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WANG Qiu-rong,HE-Feng,LIN Li-min,WANG Zhi-yong,LIU Xian-de
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| Abstract: |
| A feeding trial was conducted to investigate the effect of Artemia franciscana nauplii enriched with different levels of bovine lactoferrin (LF)(T1: 0mg/L; T2: 50mg/L; T3: 100mg/L; and T4: 150mg/L)on the growth and survival as well as stress resistance of the larvae of large yellow croaker Pseudosciaena crocea between 9 and 23 days after hatching. Dietary LF did not affect growth rate of larvae under the conditions in this study (P>0.05). At the termination of feeding trial, larvae fed Artemia nauplii enriched with 100 mg/L or 150 mg/L LF had significantly higher survival rate than those of the other treatments (P< 0.05). Larvae fed Artemia nauplii enriched with 150 mg/L LF showed the lowest accumulated mortality after being exposed to the air for 5 min or to 32°C seawater for 4 h. The larvae fed Artemia nauplii enriched with 100 mg/L or 150 mg/L LF showed longer survival time than those of the other groups (P<0.05) after being exposed to high salinity seawater (65). Results suggested that supplemental levels of LF markedly affected the survival and stress resistance of yellow croaker larvae. The supplemental levels of LF should be over 100 mg/L. |
| Key words: Pseudosciaena crocea stress resistance bovine lactoferrin Artemia franciscana nauplii |