تأثير نوعية العلف على نمو اصبعيات المشط الأزرق (Oreochromis aureus) المرباة في المياه شبه المالحة
Abstract
This study has been conducted to investigate the effect of different diet qualities on growth performance and feed conversion of Oreochromis aureus fingerlings reared in brackish water (salinity, 20‰) of 100 liters glass aquaria. The fingerlings were fed two diet types which differ by their dietary protein and lipid contents: a scientific diet (SD) and a commercial diet (CD), twice a day to satiation for 30 days.
The results revealed that the best growth rates (ADG, % weight gain, SGR) were significantly higher (P<0.05) at fingerlings fed the scientific diet. Feed conversion (FC) showed the same trend. There were significant differences (P<0.05) between SD (0.63) and CD (1.41).
تم إجراء البحث لدراسة مدى تأثير نوعية العلائق المختلفة في معاملات النمو و معامل تحويل الغذاء عند اصبعيات المشط الأزرق المرباة في المياه شبه المالحة ‰ 20 ضمن أحواض زجاجية سعة 100 ليتر والتي تم تغذيتها مرتين في اليوم حتى الشبع لمدة شهر واحد. قمنا بتغذية الاصبعيات على عليقتين تختلقان من حيث محتواهما من البروتين و الدهون, الأولى عليقة علمية تم تحضيرها في المختبر بحسب الطرق العلمية المعروفة أما الثانية فهي تجارية و تستعمل في بعض المزارع السمكية.
حققت الاصبعيات التي غذيت على العليقة العلمية SD أفضل معدلا ت للنمو (معدل الكسب اليومي ADGوالنسبة المئوية للوزن المكتسب والنسبة المئوية لمعدل النمو اليومي SGR) فاقت مثيلاتها عن تلك المرباة على العليقة التجارية CD (P<0.05). وعلى السياق نفسه، أثبتت هذه الدراسة وجود اختلافات جوهرية (P<0.05) في معامل تحويل الغذاء (FC) مابين نوعي الاصبعيات المرباة على العليقة العلمية (0.63) والتجارية (1.41).
Downloads
Published
How to Cite
Issue
Section
License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
The authors retain the copyright and grant the right to publish in the magazine for the first time with the transfer of the commercial right to the Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series
Under a CC BY- NC-SA 04 license that allows others to share the work with of the work's authorship and initial publication in this journal. Authors can use a copy of their articles in their scientific activity, and on their scientific websites, provided that the place of publication is indicted in Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series . The Readers have the right to send, print and subscribe to the initial version of the article, and the title of Tishreen University Journal for Research and Scientific Studies - Biological Sciences Series Publisher
journal uses a CC BY-NC-SA license which mean
You are free to:
- Share — copy and redistribute the material in any medium or format
- Adapt — remix, transform, and build upon the material
- The licensor cannot revoke these freedoms as long as you follow the license terms.
- Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- NonCommercial — You may not use the material for commercial purposes.
- ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.
- No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.