Use of biofloc technology under different restricted feeding levels in the control of ammonia and nitrite concentrations and growth performance in cultured Nile tilapia during warm and cold seasons / (Record no. 168806)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 06159namaa22004331i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | OSt |
| 005 - أخر تعامل مع التسجيلة | |
| control field | 20250223033324.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 241112s2023 |||a|||f s||| 000 0 eng d |
| 040 ## - CATALOGING SOURCE | |
| Original cataloguing agency | EG-GICUC |
| Language of cataloging | eng |
| Transcribing agency | EG-GICUC |
| Modifying agency | EG-GICUC |
| Description conventions | rda |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| Language code of summary or abstract | eng |
| -- | ara |
| 049 ## - Acquisition Source | |
| Acquisition Source | Deposite |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 597.74 |
| 092 ## - LOCALLY ASSIGNED DEWEY CALL NUMBER (OCLC) | |
| Classification number | 597.74 |
| Edition number | 21 |
| 097 ## - Degree | |
| Degree | Ph.D |
| 099 ## - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Local Call Number | Cai01.07.03.Ph.D.2023.Di.U |
| 100 0# - MAIN ENTRY--PERSONAL NAME | |
| Authority record control number or standard number | Dina Hassan Mansour Ibrahim, |
| Preparation | preparation. |
| 245 10 - TITLE STATEMENT | |
| Title | Use of biofloc technology under different restricted feeding levels in the control of ammonia and nitrite concentrations and growth performance in cultured Nile tilapia during warm and cold seasons / |
| Statement of responsibility, etc. | by Dina Hassan Mansour Ibrahim ; Supervisors Dr. Mohamed Elnady Ahmed Mohamed , Dr. Rasha Khaled Abdel-Wahed , Dr. Amr Moneer Helal. |
| 246 15 - VARYING FORM OF TITLE | |
| Title proper/short title | / إستخدام تكنولوجيا البيوفلوك تحت مستويات مختلفة من التغذية المحدودة للتحكم في تركيزات الأمونيا والنيتريت وأداء النمو في البلطي النيلي المستزرع خلال المواسم الدافئة والباردة |
| 264 #0 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE | |
| Date of production, publication, distribution, manufacture, or copyright notice | 2023. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 152 pages : |
| Other physical details | illustrations ; |
| Dimensions | 25 cm. + |
| Accompanying material | CD. |
| 336 ## - CONTENT TYPE | |
| Content type term | text |
| Source | rda content |
| 337 ## - MEDIA TYPE | |
| Media type term | Unmediated |
| Source | rdamedia |
| 338 ## - CARRIER TYPE | |
| Carrier type term | volume |
| Source | rdacarrier |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (Ph.D)-Cairo University, 2023. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE | |
| Bibliography, etc. note | Bibliography: pages 118-152. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Nile tilapia were raised in biofloc culture to evaluate growth performance during the fattening stage and water quality dynamics. The current experiment was designed to test the effect of rearing tilapia under different restricted feeding rates that amount to 1.2, 1.4 and 1.6% of fish biomass compared to that of the control treatment which had a feeding level of 2.0% in biofloc culture. Treatments were equally replicated in duplicate tanks per treatment. The optimum restricted feeding rate during the current experiment was observed when fish were fed at 1.4% feeding rate compared to that of the control treatment. Consequently, fish should be fed at lower feed inputs in biofloc culture compared to the control since neither daily weight gain nor feed conversion ratio was improved when the control feed input was employed. Final biomass harvest/m3 ranged 3.17-4.17 kg/m3 by the end of the fourth month during the experimental period was obtained. When reducing dietary feeding rate to 1.4, no negative effect on expected fish harvest. This indicated that juvenile tilapia can obtain supplementary nutrition from feeding on suspended biofloc material in tank water. Feed conversion ratios were improved in the 1.4% and 1.6% feed inputs<br/>(1.57 and 1.96:1, respectively) when compared to the control treatment (2.43:1), which reflected the positive effect of biofloc material as a source of nutrition for Nile tilapia during the fattening process. Consequently, it can be concluded that restricted feeding should be adopted when fish are raised in biofloc environment in order to reduce feed costs and increase profitability. |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | تمت تربية اسماك البلطي النيلي تحت نظام البيوفلوك لتقييم أداء النمو خلال مرحلة التسمين وديناميكيات جودة المياه. صممت التجربة الحالية لاختبار تأثير تربية البلطي في ظل معدلات مختلفة من التغذية المحدودة تصل إلى 1,2 و 1,4 و 1,6٪ من الكتلة الحيوية للأسماك مقارنة بمعاملة الكنترول التي كان مستوى التغذية فيها 2,0٪ في نظام البيوفلوك. تم تكرار المعاملات بالتساوي في احواض مكررة لكل معاملة، لوحظ معدل التغذية الأمثل خلال التجربة الحالية عند تغذية الأسماك بمعدل تغذية 1,4٪ مقارنة بمعاملة الكنترول. وبالتالي يجب تغذية الأسماك بمعدل تغذية أقل في استزراع البيوفلوك مقارنةً بمجموعة الكنترول حيث أنه لم يتم تحسين زيادة الوزن اليومي أو معدل تحويل العلف عند استخدام مدخلات التغذية الكنترول. تراوح الحصاد النهائي للكتلة الحيوية / م3 بين 3,17 – 4,17 كجم / م3 بنهاية الشهر الرابع خلال فترة التجربة. عند تقليل معدل التغذية إلى 1,4، لا يوجد تأثير سلبي على الحصاد المتوقع للأسماك. يشير هذا إلى أن البلطي اليافع يمكن أن يحصل على تغذية تكميلية من التغذية على مادة البيوفلوك المعلقة في مياه الحوض .تم تحسين نسب التحويل الغذائي في 1,4٪ و 1,6٪ من التغذية المحدودة (1,57 و 1,96: 1 على التوالي) بالمقارنة مع معاملة الكنترول (2,43: 1) والتي تعكس التأثير الإيجابي لمادة البيوفلوك كمصدر لتغذية البلطي النيلي أثناء عملية التسمين. وبالتالي يمكن أن نستنتج أنه يجب اعتماد التغذية عند تربية الأسماك في بيئة البيوفلوك من أجل تقليل تكاليف العلف وزيادة الربحية. |
| 530 ## - ADDITIONAL PHYSICAL FORM AVAILABLE NOTE | |
| Issues CD | Issues also as CD. |
| 546 ## - LANGUAGE NOTE | |
| Text Language | Text in English and abstract in Arabic & English. |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Tilapia fish |
| Source of heading or term | qrmak |
| 653 #0 - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Biofloc |
| -- | Restricted feeding |
| -- | Tilapia |
| -- | Fattening stage |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Mohamed Elnady Ahmed Mohamed |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Rasha Khaled Abdel-Wahed |
| Relator term | thesis advisor. |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Amr Moneer Helal |
| Relator term | thesis advisor. |
| 900 ## - Thesis Information | |
| Grant date | 01-01-2023 |
| Supervisory body | Mohamed Elnady Ahmed Mohamed |
| -- | Rasha Khaled Abdel-Wahed |
| -- | Amr Moneer Helal |
| Discussion body | Ramadan Mohamed Abo Zied |
| -- | Adel Ahmed Tharwat Amer |
| Universities | Cairo University |
| Faculties | Faculty of Agriculture |
| Department | Department of Animal Production |
| 905 ## - Cataloger and Reviser Names | |
| Cataloger Name | Shimaa |
| Reviser Names | Huda |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Thesis |
| Edition | 21 |
| Suppress in OPAC | No |
| Source of classification or shelving scheme | Home library | Current library | Date acquired | Inventory number | Full call number | Barcode | Date last seen | Effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | المكتبة المركزبة الجديدة - جامعة القاهرة | قاعة الرسائل الجامعية - الدور الاول | 12.11.2024 | 89220 | Cai01.07.03.Ph.D.2023.Di.U | 01010110089220000 | 12.11.2024 | 12.11.2024 | Thesis |