水生生物学报2017，Vol.41Issue(5)：1000-1009,10.DOI:10.7541/2017.125
饲料中棕榈油替代鱼油和豆油对黄颡鱼生长和肌肉脂肪酸组成的影响
EFFECTS OF SUBSTITUTING PALM OIL FOR FISH OIL AND SOY OIL IN FEED ON THE GROWTH PERFORMANCE AND MUSCULAR FATTY ACID COMPOSITION OF PELTEOBAGRUS VACHELLI
摘要
Abstract
To investigate the effects of dietary replacement of fish-soy oil mixtures by palm oil on growth performance, feed utilization, muscular fatty acid composition, morphological index and liver tissue structure of yellow catfish (Pel-teobagrus vachelli Richardson), five iso-proteic (400 g/kg), iso-lipidic (100 g/kg) and iso-energetic (15.70 MJ/kg) diets were formulated, in which the control group was supplemented with 1:2 fish-soy oil mixtures, and trial groups adopted different palm oil level (10 g/kg, 25 g/kg, 40 g/kg and 55 g/kg) to replace the mixture oil, respectively. For a 8-week trial. The results showed that dietary palm oil replacement had no significant effect on the feed intake, body weight, growth rate, feed efficiency, and protein retention efficiency (P>0.05). All the above parameters were increased with in-creasing dietary palm oil replacement level up to 25 g/kg, and then decreased. LA and n-3 HUFA concentrations in dorsal muscle significantly decreased with increasing dietary palm oil replacement level (P<0.05), while muscular n-3/n-6 significantly increased with increasing dietary palm oil replacement level (P<0.05). Furthermore, there were no significant difference in condition factor and viscerosomatic index among different groups (P>0.05). However, hepato-somatic index of 55 g/kg palm oil group was significantly higher than that of 25 g/kg palm oil group (P<0.05). The swelling hepatocytes with nuclei displacement and the increasing number of hepatic sinusoid and lipid cells were ob-served in 55 g/kg palm oil group. In conclusion, palm oil that replace 1:2 fish-soy oil mixtures up to 25 g/kg had no sig-nificant effect on the growth performance but improved the fatty acid profile of dorsal muscle.关键词
棕榈油/黄颡鱼/生长/饲料利用/肌肉脂肪酸Key words
Palm oil/Pelteobagrus vachelli/Growth performance/Feed utilization/Muscular fatty acids分类
农业科技引用本文复制引用
赵帅兵,吴文俊,代小芳,朱凌盈,陆裕肖,吴天星..饲料中棕榈油替代鱼油和豆油对黄颡鱼生长和肌肉脂肪酸组成的影响[J].水生生物学报,2017,41(5):1000-1009,10.基金项目
浙江省博士后科研项目择优资助 Supported by the Preferential Fund for Zhejiang Provincial Post-doctoral Scientific Research Projects （）
