تم في هذا البحث دراسة تأثير إضافة الحمض الأميني "اللايسين" إلى الخلطة العلفية في نمو أسماك الكارب العادي Cyprinus carpio L. المرباة في 8 أحواض زجاجية سعة كل منها 40 ليتراً، وضع في كل حوض 8 إصبعيات من سمك الكارب العادي بمتوسط طول قياسي 7.5سم ± 0.05 و متوسط وزن 12.25غ ± 0.57، تم إضافة اللايسين بنسب مختلفة (شاهد دون إضافة اللايسين, 2%, 3% و 4%) إلى الخلطة العلفية. زُودت الأحواض بفلاتر و مضخات أوكسجين، عُلفت الأسماك مرتين يومياً و حتى الشبع.
بينت نتائج الدراسة و بحساب معدل النمو المطلق و معدل النمو النوعي و معامل التحويل الغذائي، أن المعاملة (L1) التي أضيف إليها اللايسين بنسبة (2%) من الوزن الكلي للخلطة قد تفوقت معنوياً على المعاملات الثلاث الأخرى إذ بلغ معامل التحويل الغذائي (2.2)، و كان معدل النمو النوعي (0.28 %/يومياً).
This research aimed to study the effect of adding different rates of lysine on the weight and
growth of common carp fingerlings. The experiment was carried out in the laboratory for 4
months using eight glass containers (40 liters each) with four treatments (L0 no Lysine
addition, L1 (2%), L2 (3%), L3(4%) of the total weight of diet. Eight common carp
fingerlings (average of tall 7.5cm ± 0.05 and average of weight 12.25g ± 0.57) were
cultured in each container with Oxygen pumps and filters.
Results showed by growth rate, absolute growth rate, specific growth rate and food
conversion ratio (FCR) that the treatment L1 (2% lysine) was significantly the best
comparing to the other treatments, where FCR was (2.2) and the specific growth ratio was
(0.28 %)
References used
AHMED, A., and KHAN M. A., Dietary lysine requirement of fingerling Indian major carp (Cirrhinus mrigala) (Hamilton). Aquaculture. Vol 235, 2004,. 499– 511
BHATNAGAR, A., and DEVI., P.Water quality guidelines for the management of pond fish culture. International Journal of Environmental Sciences. 2013. 3(6): 1980 -2009
FAO, (Food and Agriculture Organization of the United Nations). The State of World Fisheries and Aquaculture. Meeting the sustainable development goals. Rome. 2018, 227 pages
This study aimed to investigate the effect of frozen live food (Daphnia magna) and artificial diets on growth performance, feed conversion ratio and survival of Cyprinus carpio fry reared in 25-liter glass aquaria. Duplicate groups of fry were fed o
The study was conducted at the Breeding and fish diseases
Laboratory - College of Veterinary Medicine were used drug
substance ivermectin concentration of 1% - 50 μg/ kg on the
normal Carps.
The study was conducted in a fish laboratory in the college of
veterinary medicine during the period between the months of
March and September. The experiments of this study were
performed in laboratory conditions. Five dosage levels of
Ivermectin were administered.
This study was conducted to study the effect of including
different levels of Grape seed oil as a natural antioxidant on
layer hen egg production, egg quality,.
التقصي عن الإصابة ببعض انواع الأوالي الطفيلية الداخلية عند أسماك الكارب العادي Cyprinus carpio في مزرعة السن