بررسي تاثير افزودني خوراكي پودر سير خام Allium sativum بر روي شاخص‌هاي رشد ماهي كپور معمولي Carpio Cyprinus

The evaluation of garlic powder feed additive and it›s effect on growth rate of common carp, Cyprinus carpio

اين پژوهش به منظور بررسي اثر پودر سير بر تغذيه و شاخص‌هاي رشد ماهي كپور معمولي (Carpio Cyprinus) انجام پذيرفت. ماهيان كپور با ميانگين وزني اوليه‌ي 5/5±5/25 گرم به مدت 60 روز و در 9 تانك 2000 ليتري (30 قطعه بچه ماهي در هر تانك) با جريان آب 5/1 ليتر در دقيقه ذخيره شدند. براي تغذيه‌ي آنها غذاي پودري كپور ماهيان از كارخانه‌ي بهسان تغذيه (BTA) تهيه گرديد. براي اين آزمايش ماهيان را به 3 تيمار غذايي تقسيم كرده كه داراي (0 و 1/0 و 1 درصد سير) بودند و براي هر تيمار 3 تكرار در نظر گرفته شد. براي بررسي رشد ماهيان و مقايسه‌ي بين تيمارها در پايان هفته‌ي هشتم از شاخص‌هاي رشد شامل افزايش وزن مطلق (WG)، ضريب تبديل غذايي (FCR)، نرخ رشد ويژه (SGR)، ميزان افزايش وزن نسبي (WGR)، استفاده شد. ميزان نرخ رشد ويژه بين تيمار دوم و تيمار سوم تفاوتي نداشت (05/0 < P)؛ در حالي كه بين تيمار اول و دو تيمار ديگر تفاوت مشاهده شد (05/0 > P). ميزان FCR در هر سه تيمار تفاوتي نداشت (05/0 < P) و ميزان افزايش وزن نسبي در بين تيمارها متفاوت بود؛ به‌طوري كه مقدار آن در تيمار دوم بيش از تيمار اول و سوم بوده و ميزان تفاوت اندك ولي معني‌داري بين تيمار سوم و اول ديده شد (05/0 > P). ميزان افزايش وزن مطلق تيمارها متفاوت بود؛ به‌طوري كه مقدار آن در تيمار سوم بيش از تيمار دوم و تيمار دوم بيش از تيمار اول بود. اين تفاوت اندك ليكن معني‌دار بود (05/0 > P). اين تحقيق نشان داد اضافه كردن پودر سير به غذا موجب بهبود توليدات در ماهي كپور معمولي شده است.

This study was undertaken to determine the effect of garlic powder on the growth indices of Cyprinus carpio. The experiment was done during 60 days and the fish whose initial mean weight was 22.5± 3.5 g was stocked in 9 flow-through tanks of 2000 liter capacity, includes 30 pieces of fish in each tank( Dugenci, et al) with a flow rate of 1.5 liter in a minute(Tan, et al. 2007). The control group was fed with concentrate (powder food) provided by Behsan Taghzieh Factory (BTF). To mix the garlic powder completely with the food, we used the powder food. To do the experiment the fish was divided into three groups and three replicates were considered for each group. The first group was just fed with powder food. After considering the amount of food and computing 0.1% of its biomes body, per kg, 1% garlic was added to the food of the second group. This amount for the third group was about 0.1% of the computed biomes of food. Comparing control group with other groups shows that garlic powder does not have any significant effect on the growth eighth week, we used the indicates which consist of Weight Gain (WG), Feed Conversion Ratio (FCR), Specific Growth Rate (SGR) and Weight Gain Rate (WGR). The rate of special growth was significant between first and two other groups (P < 0.05). The rate of FCR had not been changed in each group (P > 0.05). The rate of WGR among three groups had been increased significantly in the second group while this change between the second and third group was considerable too (P < 0.05). This research studies the effect of adding garlic powder to the food of Cyprinus carpio and its effect on indicies growth of the fish.