...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquaculture >Influence of dietary fat and adiposity on feed intake of juvenile red seabream Pagrus major
【24h】

Influence of dietary fat and adiposity on feed intake of juvenile red seabream Pagrus major

机译：膳食脂肪和肥胖对红鲷鱼幼体摄食的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A two-phase experiment was conducted to examine the effects of dietary fat and adiposity on feed intake of red sea bream. In Phase 1, juveniles (9.7 g, 20 fish tank(-1), 4 replicates) were fed low fat (LF; 15.3% fat, 60.6% protein, 22.2 kJ g(-1) energy, 0.61 g ml(-1) density) or high fat (HF; 24.6% fat, 54.9% protein, 24.2 kJ g(-1) energy, 0.68 g ml(-1) density) diets for 4 weeks to produce fish which differed in adiposity. In Phase 2, all groups were fed the LF and HF diets alternately for 8 days. Fish were fed to apparent satiation by hand twice daily and daily feed consumption was recorded. Fish were weighed at the start, weekly during Phase 1 and at the end of Phase 2. Proximate composition was determined at the start of the experiment and after Phase I and 2. In Phase 1 the amount (18.6 +/- 0.35 vs. 17.1 +/- 0.19 g) and Volume (30.6 +/- 0.58 vs. 25.2 +/- 0.28 ml) of feed consumed was significantly greater in fish fed the LF diet; energy intakes (LF, 412 +/- 7.8; HF, 413 +/- 4.7 kJ) and terminal mean fish weights (LF, 28.2 +/- 0.5; HF, 27.7 +/- 0.1 g) were similar. Fish fed the HF diet had a significantly higher proportion of visceral (37.6 +/- 1.5 vs. 28.9 +/- 1.2%) and carcass fat (9.7 +/- 0.3 vs. 8.0 +/- 0.3%). In Phase 2, fish fed the LF diet in Phase 1 consumed more of both the LF diet (2.9 +/- 0.2 vs. 2.4 +/- 0.1 g, p < 0.05) and HF diet (3.2 +/- 0.1 vs. 2.9 +/- 0.1 g, P < 0.07). Within each treatment fish consumed equal volumes of HF and LF feed, but the fish fed the LF diet in Phase 1 consumed a significantly greater total volume of feed (9.5 +/- 0.4 vs. 8.1 +/- 0.3 ml). Fish weights at the end of Phase 2 did not differ (LF, 34.6 +/- 0.9 vs. HF, 33.8 +/- 0.4). Our results indicate that the fish ate to meet an energy demand during Phase 1 and suggest that stomach volume increased in fish fed the lower energy (LF) diet, allowing increased meal size. This increase in meal size persisted when these fish were fed alternating HF or LF diets for 8 days (Phase 2). We were unable to unequivocally demonstrate an effect of adiposity on appetite during Phase 2, although this can be inferred since the fish fed the HF diet in Phase 1 should also have had the ability to increase their feed intake during Phase 1, but did not.
机译：进行了一个分为两个阶段的实验，以研究膳食脂肪和肥胖对红鲷鱼摄食的影响。在阶段1中，向幼鱼（9.7 g，20鱼缸（-1），4个重复）喂低脂（LF; 15.3％脂肪，60.6％蛋白质，22.2 kJ g（-1）能量，0.61 g ml（-1） ）或高脂肪（HF; 24.6％脂肪，54.9％蛋白质，24.2 kJ g（-1）能量，0.68 g ml（-1）密度）的饮食持续4周，以生产不同脂肪的鱼。在第2阶段中，所有组均交替饲喂LF和HF日粮，共8天。每天两次用手给鱼喂饱肉，记录每天的饲料消耗。在开始时，阶段1期间和阶段2结束时每周称重鱼。在实验开始时以及阶段1和2之后确定鱼的近端成分。阶段1中的量（18.6 +/- 0.35对17.1） +/- 0.19克）和饲料（LF饲料喂养的鱼）的饲料量（30.6 +/- 0.58和25.2 +/- 0.28毫升）显着增加;能量摄入（LF，412 +/- 7.8; HF，413 +/- 4.7 kJ）和最终平均鱼重（LF，28.2 +/- 0.5; HF，27.7 +/- 0.1 g）相似。用HF饮食喂养的鱼内脏和cer体脂肪的比例明显更高（37.6 +/- 1.5对28.9 +/- 1.2％）（9.7 +/- 0.3对8.0 +/- 0.3％）。在第2阶段中，在第1阶段中饲喂LF饲料的鱼食用了LF饲料（2.9 +/- 0.2 vs. 2.4 +/- 0.1 g，p <0.05）和HF饲料（3.2 +/- 0.1 vs. 2.9）较多+/- 0.1 g，P <0.07）。在每个处理中，鱼消耗了等量的HF和LF饲料，但是在第1阶段中饲喂LF日粮的鱼消耗的饲料总量大得多（9.5 +/- 0.4对8.1 +/- 0.3 ml）。在第2阶段结束时鱼的重量没有变化（LF，HF为34.6 +/- 0.9，HF为33.8 +/- 0.4）。我们的结果表明，鱼在第1阶段进食能满足能量需求，并表明以低能量（LF）饮食喂养的鱼的胃体积增加，从而使进食量增加。当这些鱼交替饲喂HF或LF饲料8天时（第2阶段），进食量持续增加。尽管无法推断出肥胖在第2阶段中对食欲的影响，但可以推断出这一点，因为在第1阶段中喂食HF日粮的鱼也应该有能力在第1阶段中增加摄食量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号