摘要
以平均体重45.25g的1冬龄黄颡鱼为试验对象,在饲料中分别添加0.4%的加丽素红、0.5%的金黄素、0.5%的金菊黄、6%的玉米蛋白粉作为色素源,以不含色素源的饲料为对照,在室内循环养殖系统中养殖56d,观察各试验组黄颡鱼的体色,分别测定其背部和腹部皮肤、血清中的酪氨酸酶活力、总类胡萝卜素和叶黄素含量。结果为金菊黄组黄颡鱼血清酪氨酸酶活力显著提高,而其他各试验组之间无显著性的差异;对照组黄颡鱼总类胡萝卜素含量在背部皮肤下降11.2%、腹部皮肤下降57.5%,叶黄素含量变化与此类似;玉米蛋白粉组类胡萝卜素含量在腹部皮肤降低了38.5%、背部皮肤无显著性变化,背部和腹部皮肤中叶黄素含量有一定程度的增加;加丽素红组黄颡鱼总类胡萝卜素含量在腹部皮肤中降低了45%、背部皮肤无显著性变化,背部和腹部皮肤中叶黄素含量显著降低;金黄素组鱼体背部、腹部皮肤中总类胡萝卜素的含量分别升高了1.8倍和1.5倍,金菊黄组鱼体背部和腹部皮肤中总类胡萝卜素的含量分别升高了1倍和0.49倍;叶黄素含量也显著增加。试验结果表明,黄颡鱼能够选择性地沉积来源于饲料色素物质,饲料色素对黄颡鱼体色具有较大的影响。
255 ind.with average weight 45.25 g of Pelteobagrus fulvidraco were fed respectively five experimental diets for 56 days in indoor recirculating aquaculture system,the diets containing respectively 0.5% goldenrod,0.4% carophyll red,0.5% auroxanthin,6% corn gluten meal and the control group.The tryosinase activity and the concentration of carotenoids and luteins in blood serum and skin were detected respectively.The following results are obtained.The tyrosinase activity in the serum with goldenrod group was significantly increased,while the other experimental groups had not significant difference.The total carotenoid content in the back skin with control group had decreased 11.2% ,and 57.5% in abdominal skin,and lutein content was similar to these.The carotenoid content in the abdominal skin with corn gluten meal group,skin had decreased by 38.5% ,and that in back skin had no significant change.The lutein content in back and abdominal skin increased to some extent.The total carotenoid content with carophyll red group decreased in the abdominal skin by 45% ,and back had no significant changes in the skin.The lutein content in the abdominal skin was significantly reduced.The total carotenoid content in the back,abdominal skin of the auroxanthin group increased by 1.8 times and 1.5 times,the lutein content also increased significantly.The total carotenoid content in the back,abdominal skin of the goldenrod group increased by 1.0-fold and 0.49-fold,the lutein content also increased significantly.The results show that pigment derived from the feed may be selectively deposited by P.fulvidraco.The P.fulvidraco body color was greatly affected by the pigment material from the feed.
出处
《水产学报》
CAS
CSCD
北大核心
2010年第11期1728-1735,共8页
Journal of Fisheries of China
关键词
黄颡鱼
类胡萝卜素
叶黄素
酪氨酸酶
Pelteobagrus fulvidraco
carotenoids
lutein
tyrosinase
