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军曹鱼饲料中用豆粕代替鱼粉的研究 被引量:27

Partial replacement for fish meal with soybean meal in feed for Cobia(Rachycentron canadum)
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摘要 研究了饲料中用豆粕替代部分鱼粉对军曹鱼Rachycentron canadum生长的影响.将初始体长为(12.77±1.03)cm、初始体重为(7.95±2.12)g的试验鱼随机分配在15个网箱中,每箱放30尾鱼.试验分5组进行,每组设3个平行,分别投喂用豆粕替代鱼粉的基础饲料,替代比例分别为0(对照组)、5%、10%、20%和30%,日投喂量按鱼体重的3%~5%.试验历时60 d,结果表明,当基础饲料中豆粕替代鱼粉的比例不超过10%时,对军曹鱼的相对增重率、饲料系数、成活率以及肥满度没有显著影响(P>0.05);当替代比例为20%、30%时,则对军曹鱼的生长、增重率、饲料系数、成活率以及肥满度有显著影响(P<0.05);当替代比例为30%时,对内脏比才有显著影响(P<0.05).考虑到基础饲料中已经含有20%的豆粕,建议军曹鱼饲料中豆粕与鱼粉的比例为1∶ 1.8. A two - month feeding trial was conducted to evaluate the effects of partial substitution of fish meal with soybean meal with different levels(0, 5%, 10%, 20% and 30% )in diet for cobia (Rachycentron canadurn). The juvenile cobias with initial body length of ( 12. 77 ± 1.03 ) cm and initial body weight of (7.95 ±2. 12)g were randomly assigned to 15 floating cages(2 m ×2 m ×0.8 m) at a rate of 30 fish each cage with triplication. The fish were fed twice daily at a feeding rate of 3% ~5%. The results showed that the fish fed feed replaced for fish meal by less than 10% had no significant reduction in growth and feed utilization (P 〉0. 05). When the fish meal in the diets were replaced by 20%, however, there were significant differences in the relative weight gain ratio (RWGR), feed conversion rate (FCR), survival rate (SR), condition factor (CF) and internal organs weight rate (IOWR) between control group and the experimental groups(P 〈 0. 05). When the replacement level increased to 30%, the IOWR was significant difference between control group and experimental ones( P 〈0. 05 ). The optimal dietary soybean -fish meal ratio was 1:1.8 in the basic diet contained 20% soybean meal for cobia.
出处 《大连水产学院学报》 CSCD 北大核心 2005年第4期304-307,共4页 Journal of Dalian Fisheries University
基金 中国水产科学研究院基金资助项目(2001-5-2)
关键词 军曹鱼 饲料 豆粕 鱼粉 Rachycentron canadum feed soybean meal fish meal
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