The pituitary gland extract is used in inducing the reproduction of African catfish (Clarias gariepinus). In order for the pituitary extract to be effective, donor fish should be sexually mature whether male or female. Also, the extraction of pituitary gland is preferred to be close to or within the spawning season. From practical views, extracting the …
Tag: Egypt.
Permanent link to this article: https://fishconsult.org/?p=2998
Mar 11 2012
Checking the spawning of Nile tilapia (Oreochromis niloticus) in hapa system in Egypt (Video)
This video shows how the 2-person crew check the spawning of Nile tilapia (Oreochromis niloticus) in open hatchery system using hapas in earthen ponds. The crew are working at both sides of the spawning hapa. The gradually crowd tilapia broodstock to facilitate their handling. The intervals between checking depend on water temperature and target product whether fry …
Permanent link to this article: https://fishconsult.org/?p=2906
Mar 11 2012
Post harvest practices of farmed tilapia in Egypt – Video
Credit for the clip: Samuel Simon Zigizo (South Sudan) Description: Abdel Rahman El Gamal As the awareness on fish quality and safety increases among fish farmers in Egypt, post harvest procedures have significantly developed. The video shows tilapia how tilapia harvest is transferred in netting scoop nets and placed temporary into a tank whereas crushed …
Permanent link to this article: https://fishconsult.org/?p=2900
Mar 10 2012
Desert aquaculture for Nile tilapia, Oreochromis niloticus integrated with agricultural crops in Egypt- Part 3- water quality management
Credit: Mohamed El Gazaar (Egypt) Supply of water, aeration and removal of solid wastes As shown in the photo the supply of water is done at an angle of 45o. Placing the aerators at the same angle helps to circulate and move tank water in one direction which will lead to better oxygenation of tank …
Permanent link to this article: https://fishconsult.org/?p=2851
Mar 10 2012
Desert aquaculture for Nile tilapia, Oreochromis niloticus integrated with agricultural crops in Egypt Part 2- Construction
Credit: Mohamed El Gazaar (Egypt) The first photo shows two types of tanks during the construction phase while the second photo shows the concrete base of the fattening circular tanks. Intermediate tanks: The 150-m3 rectangular tanks are used for the production of Nile tilapia juveniles of an average weight of 50-g which are required for …
Permanent link to this article: https://fishconsult.org/?p=2846
Mar 10 2012
Desert aquaculture of Nile tilapia, Oreochromis niloticus integrated with agricultural crops in Egypt Part 1- General features
Credit: Mohamed El Gazaar (Egypt) The first photo shows tilapia harvest of grow-out tank in a desert fish farm with a production capacity of 120 tons of fish/year. The production practices are intensified in this farm whereas production ranges from 28-32 kg of tilapia/m3 during a 4-month growing season. The underground water of a temperature …
Permanent link to this article: https://fishconsult.org/?p=2838
Mar 05 2012
Desert aquaculture for Nile tilapia, Oreochromis niloticus when integrated with agricultural crops in Egypt- Part 3- water quality management (in Arabic)
Credit: Mohamed El Gazzar (Egypt) الأمداد بالمياه والتهوية والتخلص من الفضلات الصلبة كما هو واضح من الصورة يتم دخول المياه إلى أحواض التسمين بزاوية 45 درجة كما يتم وضع وسيلة التهوية فى نفس الاتجاه مما يؤدى الى دوران المياه وتحريكها فى اتجاه واحد مما يساعد على زيادة الأكسيجين بالحوض والتخلص من المكونات الصلبة. تعمل حركة …
Permanent link to this article: https://fishconsult.org/?p=2766
Mar 05 2012
Desert aquaculture for Nile tilapia, Oreochromis niloticus when integrated with agricultural crops in Egypt Part 2- Construction considerations (in Arabic)
Credit: Mohamed El Gazzar (Egypt) توضح الصورة الأولى نوعين من الأحواض المستخدمة أثناء مرحلة الإنشاء بينما توضح الصورة الثانية القاعدة الخرسانية لأحواض التسمين الدائرية الأحواض المستطيلة (المرحلة الوسطية): تستهدف هذه المرحلة التى تتم فى الأحواض المستطيلة ذات الحجم 150متر مكعب للحوض إنتاج يوافع بمتوسط وزن 50 جرام التى تحتاجها أحواض التسمين. يتم إنشاء هذه الحوائط …
Permanent link to this article: https://fishconsult.org/?p=2744
Mar 04 2012
Desert aquaculture for Nile tilapia, Oreochromis niloticus when integrated with agricultural crops in Egypt Part 1- General features (in Arabic)
Credit: Mohamed El Gazzar (Egypt) الملامح العامة لأحد نماذج الاستزراع السمكى للبلطى فى الصحراء فى مصر تشير الصورة الأولى إلى حصاد أسماك البلطى من أحد تانكات مزرعة سمكية فى الصحراء يتم إدارتها بالأسلوب المكثف حيث يتراوح الإنتاج فيها من 28 – 32 كيلوجرام للمتر المكعب خلال الموسم الإنتاجى مع العلم بأن الطاقة الإنتاجية للمزرعة 120 …
Permanent link to this article: https://fishconsult.org/?p=2726
Feb 27 2012
Culture of Nile tilapia in integration with banana in Egypt
The two photos cover the overall integrated aquaculture-horticulture project. In this specific project, horticulture is represented by banana while Nile tilapia (Oreochromis niloticus) represents the aquaculture component. Because of water scarcity in Egypt, the surface irrigation of banana farming is not encouraged due to its high water consumption. In order to compromise between the restrictions …
Permanent link to this article: https://fishconsult.org/?p=2644