Effects of dietary astaxanthin source and light manipulation on the skin colour of Australian snapper Pagrus auratus (Bloch & Schneider, 1801)

被引:63
作者
Booth, MA
Warner-Smith, RJ
Allan, GL
Glencross, BD
机构
[1] NSW Fisheries, Port Stephens Fisheries Ctr, Taylors Beach, NSW 2316, Australia
[2] Govt WA, Fremantle Maritime Ctr, Dept Fisheries, Fremantle, WA 6160, Australia
关键词
Pagrus auratus; skin colour; astaxanthin; shade;
D O I
10.1111/j.1365-2109.2004.01038.x
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
Two experiments were conducted with Australian snapper Pagrus auratus (Bloch and Schneider, 1801). The first was aimed at determining the dietary level of astaxanthin that improved skin redness (CIE a*values) of farm-reared snapper. Farmed snapper (ca. 600 g) fed a commercial diet without carotenoids were moved to indoor tanks and fed the same diet supplemented with 0, 36 or 72 mg astaxanthin kg(-1) (unesterified form as Carophyll Pink(TM)) for nine weeks. Skin redness (CIE a* values) continued to decrease over time in fish fed the diet without astaxanthin. Snapper fed the diet containing 72 mg astaxanthin kg(-1) were significantly more red than fish fed the diet with 36 mg astaxanthin kg(-1) three weeks after feeding, but skin redness was similar in both groups of fish after 6 and 9 weeks. The second experiment was designed to investigate the interactive effects of dietary astaxanthin source (unesterified form as Carophyll Pink(TM) or esterified form as NatuRose(TM); 60 mg astaxanthin kg(-1)) and degree of shading (0%, 50% and 95% shading from incident radiation) on skin colour (CIE L*a*b*) and skin and fillet astaxanthin content of farmed snapper (ca. 800 g) held in 1 m(3) floating cages. After 116 days, there were no significant interactions between dietary treatment and degree of shading for L*, a* or b* skin colour values or the concentration of astaxanthin in the skin. Negligible amounts of astaxanthin were recovered from fillet samples. The addition of shade covers significantly increased skin lightness (L*), possibly by reducing the effect of melanism in the skin, but there was no difference between the lightness of fish held under either 50% or 95% shade cover (P>0.05).
引用
收藏
页码:458 / 464
页数:7
相关论文
共 17 条
[1]  
CIE, 1976, CIE PUBL
[2]   Carotenoids versus retinoids (Vitamin A) as essential growth factors in penaeid prawns (Penaeus semisulcatus) [J].
Dall, W .
MARINE BIOLOGY, 1995, 124 (02) :209-213
[3]   Utilization of natural and synthetic sources of carotenoids in the skin pigmentation of gilthead seabream (Sparus aurata) [J].
Gomes, E ;
Dias, J ;
Silva, P ;
Valente, L ;
Empis, J ;
Gouveia, L ;
Bowen, J ;
Young, A .
EUROPEAN FOOD RESEARCH AND TECHNOLOGY, 2002, 214 (04) :287-293
[4]  
Ha Bong-Seuk, 1993, Bulletin of the Korean Fisheries Society, V26, P91
[5]  
Ito Y., 1986, Suisan Zoshoku, V34, P77
[6]  
KATAYAMA T, 1972, B JPN SOC SCI FISH, V38, P1399
[7]  
LAST PR, 1999, AUSTR SEAFOOD HDB ID, P70
[8]  
Lin MQ, 1998, NIPPON SUISAN GAKK, V64, P280
[9]  
LORENZ RT, 2001, BIOASTIN NATUROSE TE, V20
[10]  
MATSUI S, 1992, NIPPON SUISAN GAKK, V58, P1459