Supplementation of citric acid and amino acid-chelated trace element to develop environment-friendly feed for red sea bream, Pagrus major
Supplementation of citric acid and amino acid-chelated trace element to develop environment-friendly feed for red sea bream, Pagrus major
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DOI：
10.1016/j.aquaculture.2005.04.012
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发表时间：
2005-07
期刊：
影响因子：
4.5
通讯作者：
S. Sarker;S. Satoh;V. Kiron
中科院分区：
文献类型：
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作者：
S. Sarker;S. Satoh;V. Kiron
营养密集的食物经常挑战鱼类的生理能力，并导致多余的物质排放到环境中。本试验研究了饲料中添加磷(P)、柠檬酸(CA)和氨基酸螯合微量元素(AA-CTE)对罗非鱼生长、营养物质存留量和负荷量的影响。制备了8种鱼粉基础日粮，分别编码为F0、F1、F2、F3、C0、C2、A0和A2。日粮F0为不添加磷、CA和AA-CTE的日粮。日粮F1、F2和F3分别添加0.25%、0.50%和0.75%的磷。日粮C0和C2分别与日粮F0和F2相似，但添加了3%的CA。饲粮A0和A2分别与饲粮F0和F2相似，但含有0.1%的AA-CTE，而不是无机微量元素。每组重复投喂30尾(平均初始体重7.14±0.01g)，连续12周。饲料中添加P、CA或AA-CTE显著提高了鱼体的生长和饲料性能(P<；0.05)。对照组的最终平均体重为46.1g，饲料转化率为1.14。C2组生长最好(最终平均体重54.9g)，A2组FCR最好(1.00)。添加CA(C0)和AA-CTE(A2)组对P的吸收显著高于F0组(P<；0.01)。饲粮F0的磷、氮存留率分别为54%和33%，饲粮C0分别为74%和38%，饲粮A0分别为63%和38%。日粮C0和A0的磷和氮(N)滞留值显著增加(P<；0.01)，从而降低了它们的排泄量(P<；0.05)。因此，本研究表明，在鱼粉基础饲料中不添加磷的情况下，添加CA和AA-CTE可以提高鱼的生长、FCR和营养物质的存留量，并降低氮和磷的负荷，因此，它们可以更好地组合在一起开发环境友好型饲料。
Nutrient dense diets often challenge the physiological capabilities of fish and lead to discharge of the excess amounts into the environment. This study investigated the effect of phosphorus (P), citric acid (CA), and amino acid-chelated trace element (AA-CTE) supplemented in diets on growth, nutrient retention, and loading in red sea bream. Eight fish meal-based diets were prepared and coded as F0, F1, F2, F3, C0, C2, A0, and A2, respectively. Diet F0 was the diet without addition of P, CA, and AA-CTE. Diet F1, F2, and F3 were supplemented with 0.25, 0.50, and 0.75% P, respectively. Diets C0 and C2 were similar to diets F0 and F2, respectively, but supplemented with 3% CA. Diets A0 and A2 were akin to diets F0 and F2, respectively, but contained 0.1% AA-CTE instead of the inorganic trace element. All diets were fed until satiation to duplicate groups of 30 fish (mean initial body weight 7.14±0.01 g) for 12 weeks. Growth and feed performance were lowest in the fish fed F0 diet, and were significantly improved (P<0.05) by supplementing with P, CA, or AA-CTE. The final average weight of the control group fish was 46.1 g and feed conversion ratio (FCR) value was 1.14. The C2 group showed the best growth (final average weight 54.9 g) while A2 group showed the best FCR (1.00). Absorption of P was significantly higher (P<0.01) in the CA (C0) and AA-CTE (A2) supplemented group compared to the F0. The P and N retention values of the F0 diet were 54% and 33%, respectively, while, 74%, 38% for the diet C0 and 63%, 38% for diet A0, respectively. The P and nitrogen (N) retention values for diets C0 and A0 were significantly greater (P<0.01), in turn reducing (P<0.05) their excretion. Hence, the present study demonstrated that, without additional P in the fish meal-based diets, CA and AA-CTE supplement improved fish growth, FCR, nutrient retention, and reduced both N and P loading; thus, they can better be incorporated to develop environment-friendly feed for red sea bream.