Effect of bovine lactoferrin on the growth, survival and stress resistance of Pseudosciaena crocea larvae
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

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.