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水產研究(1993年創刊)

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  • 日期: 2019-05-22
水產研究(1993年創刊)-飼料中添加不同類胡蘿蔔素對紅頭金鯛之成長及呈色影響
主題: 飼料中添加不同類胡蘿蔔素對紅頭金鯛之成長及呈色影響
摘要(中):
本研究探討在飼料中分別添加不同種類及濃度的類胡蘿蔔素,對於紅頭金鯛體表呈色之影響。實驗飼料分為 7 組,以無添加類胡蘿蔔素為對照組,添加玉米黃素者,其飼料中的含量分別為 25、50 mg/kg diet,而添加蝦紅素者,其飼料中的含量分別為 25、50、75 與 100 mg/kg diet。實驗以二階段進行,前 8 週為第一階段的呈色實驗,之後四週為第二階段的褪色實驗,測定各階段的成長、體色及分析魚體體表組織類胡蘿蔔素含量與組成。成長實驗結果指出,飼料中添加類胡蘿蔔素,對魚隻增重、飼料效率及肝體比沒有影響。而由呈色實驗發現,添加類胡蘿蔔素的組別,平均色彩差異值 (∆E) 為 8.4 ~ 10.1,都達到人眼感官可直接察覺差異的標準 (∆E > 6.0);分析組織類胡蘿蔔素含量則以對照組最低,而添加類胡蘿蔔素組別的含量為 4.9 ~ 12.3 mg/100 g tissue。在褪色實驗方面,添加類胡蘿蔔素的組別 ∆E 值為 8.5 ~ 11.2;分析組織類胡蘿蔔素含量仍以對照組最低,而添加類胡蘿蔔素組別的含量為 2.8 ~ 8.4 mg/100 g tissue。由體表組織的類胡蘿蔔素含量下降,顯示魚隻在停餵添加類胡蘿蔔素的飼料後,確實發生褪色現象,下降率為 25 ~ 32%。此外,由實驗結果顯示,玉米黃素與蝦紅素對紅頭金鯛體色的影響能力相近,欲增強魚隻體色的黃色或紅色,建議在每公斤飼料添加 32.4 ~ 35.5 mg 的玉米黃素或蝦紅素。
出版日期: 2016/6/30
標題title(英): Effects of Dietary Carotenoid Supplements on Growth and Pigmentation of Giant Cichlid, Petenia splendida
作者: 劉于溶‧廖文亮
卷別: 24
期別: 1
頁碼: 63-74
作者 auther(英): Yu-Jung Liu and Wen-Lian Liao
摘要abstract(英): This study focused on the effects of different kinds and concentrations of carotenoids in diet on the pigmentation of giant cichlid (Pentenia splendida). Experimental feeds were supplemented with two different kinds of carotenoids: zeaxanthin (hereafter referred to as Z) and astaxanthin (hereafter referred to as A). The experimental period lasted a total of 12 weeks. The fish used in the pigmentation experiment during the first 8 weeks were divided into seven groups: control, Z25, Z50, A25, A50, A75 and A100 (mg/kg diet) groups. For the dispigmentation experiment during the last 4 weeks, all of those groups were fed without adding carotenoids being added to the diet. The skin colors of the fish were measured with a tristimulus colorimeter, and further quantified for integument pigment. The experimental results indicated that the carotenoid supplements had no effects on growth and feed efficiency, but did improve pigmentation in this species. For the pigmentation experiment, the average color difference value (∆E) varied from 8.4-10.1, while the content of carotenoids in integument varied from 4.9-12.3mg/100g tissue. For the dispigmentation experiment, the average color difference value (∆E) varied from 8.5-11.2, while the content of carotenoids in integument varied from 2.8-8.4mg/100g tissue. After carotenoid supplementation was stopped, the content of carotenoids decreased about 25-32%. The effects of astaxanthin and zeaxanthin on the pigmentation level of this species were similar. The results indicated that 32.4-35.5mg/kg diet is the recommended dietary level of astaxanthin or zeaxanthin needed to ensure good pigmentation in the giant cichlid.
使用語言: 中文
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