اثر سطوح مختلف انرژي و پروتئين جيره غذايي بر عملكرد بلدرچين ژاپني در طي دوره رشد

Effect of Different Dietary Levels of Energy and Protein on Performance of Japanese Quail During Grower Phase

در اين تحقيق، اثر سطوح مختلف انرژي قابل متابوليسم و پروتئين خام جيره غذايي بر عملكرد، خصوصيات لاشه و فراسنجه هاي خوني بلدرچين ژاپني در دوره رشد (14 تا 28 روزگي) بررسي شد. از 900 قطعه بلدرچين ژاپني نر 14 روزه در يك آزمايش فاكتوريل 3×3 [سه سطح انرژي قابل متابوليسم (2900، 3050 و 3200 كيلوكالري در كيلوگرم) و سه سطح پروتئين خام (21/6، 24 و 26/4 درصد)] به صورت طرح كاملاً تصادفي با پنج تكرار و 20 پرنده در هر تكرار استفاده شد. مصرف خوراك، افزايش وزن و ضريب تبديل خوراك در كل دوره اندازه گيري شد. در پايان دوره، از هر تكرار دو قطعه پرنده انتخاب و پس از خون گيري (براي اندازه گيري تري گليسريد، كلسترول كل، ldl و اسيد اوريك) جهت بررسي خصوصيات لاشه كشتار شدند.

This research was conducted to investigate the effect of different levels of metabolisable energy and crude protein on performance, carcass characteristics and blood parameters of Japanese quail during grower phase (14-28 d of age). Nine hundreds 14-d-old male birds were used to examine 3 levels of energy (2900, 3050 and 3200 Kcal of ME/Kg of the diet) and 3 levels of protein (21.6, 24 and 26.4% CP) by a 3*3 factorial arrangement in a completely randomized design with 5 replicates of 20 birds. Feed intake, weight gain and feed conversion ratio (FCR) were measured during whole period. At the end of the experiment, 2 birds from each replicate were selected to measure the blood parameters (TG, total cholesterol, LDL and uric acid) and carcass characteristics. The lowest and highest levels of energy and protein enhanced (P<0.05) daily feed intake respectively. Daily weight gain was not affected by the treatments (P>0.05), however, FCR was improved by the diets of 3050 and 3200 Kcal ME/Kg compared with that of 2900 Kcal ME/Kg. Energy and protein interaction was significant (P<0.05) for the relative weight of liver; the treatment with 3200 Kcal ME/Kg and 24% CP showed the highest value. Among blood parameters, uric acid was decreased (P<0.05) by the diets of 3050 and 3200 Kcal ME/Kg. Based on performance results, 3050 Kcal ME/Kg of the diet can be proposed for Japanese quail nutrition during the grower phase.