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الهيئة العامة للبحوث الزراعية محاضرة
Publication date
2015
fields
Agrarian Economy
and research's language is
العربية
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اسماك التربية في سورية, واقع الثروة السمكية, التصنيف البيولوجي والعلمي للاسماك, اهم الاسماك المرباة في سورية. اعداد د. عبد اللطيف شعبان علي
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أشهر سلالات أبقار الحليب اعداد الدكتور كامل فتال في مركز البحوث الزراعية في حلب - الهيئة العامة للبحوث الزراعية.
بحث صادر عن الهيئة العامة للبحوث العلمية والزراعية في مركز بحوث حمص عن أهمية البورون وطريقة تقديره في التربة والنبات بجهاز السبكتروفوتومتر
Fish farming using earthen ponds is considered one of the most commonly-used
ways in Syria. It is one of the important resources of fish production in the country .In the
last years ,the importance of producing fish to meet the needs of Syrian citi
zensfor animal
protein has increased ,due to the shortage of sources and the increasing prices of animal
products on one hand , and the greatly growing population on the other.
The research aims to achieve the following objectives:
1 -Calculating the Production costs for all production processes contained in stages
farming fish in ponds and carry out a study and analysis of these costs account.
2- The economic evaluation t of farming fish using earthen ponds in Latakia through
the expense of some economic analysis indicators.
Through research we came to the following results:
1-The net profit achieved was 102847,3 SYP/1000m2
2- The total production costs was147952,7SYP/1000m2
3-The farm Production efficiency reached 1,97and the economic efficiency 1.69
4-The profitability index as related to production costs amounted to 81.83 % and as
related to the invested capital amounted to 20.65%.
تستورد سورية سنوياً ما بعادل أو يزيد على إنتاج القطر من الأسماك إذ بلغت كمية الأسماك المستوردة عام 2010 , 28 ألف طن في حين كان الإنتاج المحلي 12 ألف طن فقط
The broodstock of Blue tilapia (Oreochromis aureus) were reared in glass aquaria in the laboratory of the High Institute of Marine Research to study the effect of different water salinities on growth rates of those broodstocks and comparing the resul
ts with those obtained from the natural environment (freshwater).
The broodstock were transported from El-Sin Fish Farm- Banias to the culture aquaria at the beginning of April (2011). After acclimation to the three studied water salinities (7‰, 14‰ and 19 ‰) in three aquaria (the forth aquarium was left as a control: fresh water), the fish were fed on a diet containing 35 % protein till satiation, twice a day for 72 days. The results revealed that the broodstock reared at 14‰ Salinity produced the best weight gain, where the weight gain was 18.76 g/fish with a feed conversion rate (FC) of 2.04. The weight gain was 17.16 g/fish for the fish reared at 7‰ with a FC= 2.51, while broodstock reared at fresh water gained 14.63g/fish with a FC= 2.97. The worst weight gain was obtained from the broodstock reared at 19‰ (9.24 g/fish) with a FC= 3.7.
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