Insoluble Fibers Affected the Performance, Carcass Characteristics and Serum Lipid of Broiler Chickens Fed Wheat-Based Diet
محورهای موضوعی : Camel
1 - Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 - Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
کلید واژه: carcass traits, Wheat, broilers, insoluble fiber,
چکیده مقاله :
The current study was conducted to survey the influences of addition of alfalfa meal (AM), rice bran (RB) and wood shaving (WS) in wheat-based diets [contain soluble non starch polysaccharides (NSP)] on performance carcass characteristic and serum lipids of broilers from 11 to 42 d of age. Seven hundreds 10-d-old male Ross 308 chicks were placed into 35 pens and allocated to seven wheat-soybean meal-based dietary treatments which were a control (CT) diet (without any fiber source) and six fiber-included diets consisting of three sources of fiber (AM, RB and WS) and two levels of fiber inclusion (3 and 6%) in a 3 × 2 factorial arrangement. According to the results, the average daily gain (ADG), average daily feed intake (ADFI), feed conversion ratio (FCR), corrected-FCR (C-FCR) and crop, proventriculus, gizzard (relative full weights) and heart, abdominal fat, liver, breast and thigh (relative weights) and serum low density lipoprotein (LDL) were affected by different types of fibers (P<0.05). The inclusion of insoluble fibers in wheat-based diet improved ADG and FCR in broilers, so that, the highest amount of ADG and the lowest amount of C-FCR was related to 3% WS contained diet (P<0.05). The highest amount of gizzard weight was depended to 6% WS contained diet (P<0.05) and the lowest breast and thigh weight were also related to RB diets (P<0.05), but the aforementioned treatments had no effect on the different intestine sections weight (P>0.05). In general, the inclusion of 3 to 6% insoluble fibers, except for 6% WS, in wheat-based diet improved growth performance in broiler chickens.
مطالعه حاضر به منظور بررسی اثرات افزودن پودر یونجه (AM)، سبوس برنج (RB) و تراشه چوب (WS) در جیره‌های برپایه گندم روی عملکرد، صفات لاشه و لیپیدهای سرم جوجه‌های گوشتی از 11 تا 42 روزگی انجام شد. تعداد 700 قطعه جوجه گوشتی 10 روزه نر سویه راس 308 در 35 پن قرار گرفته و به 7 جیره بر پایه گندم و کنجاله سویا اختصاص یافتند که تیمارها شامل: جیره شاهد (جیره برپایه گندم بدون منبع الیافی) و 6 جیره حاوی الیاف متشکل از سه منبع الیاف (AM، RB و WS) و دو سطح الیاف (3 و 6 درصد) بوده که در قالب یک طرح فاکتوریل تنظیم شده بودند. مطابق نتایج، افزایش وزن روزانه، مصرف خوراک روزانه، ضریب تبدیل خوراک و ضریب تبدیل تصحیح شده خوراک و اوزان نسبی بخش‌های چینه‌دان، پیش‌معده و سنگدان (بر اساس درصد وزن پر به وزن زنده) و قلب، چربی محوطه بطنی، کبد، سینه و ران (بر اساس درصد وزن زنده) و لیپوپروتئین با دانسیته کم (LDL) تحت تأثیر انواع الیاف قرار گرفتند (05/0P<). افزودن الیاف نامحلول در جیره برپایه گندم موجب بهبود افزایش وزن و ضریب تبدیل خوراک در جوجه‌های گوشتی شد، به طوریکه، بیشترین مقدار افزایش وزن و کمترین مقدار ضریب تبدیل خوراک تصحیح شده مربوط به جیره‌های حاوی 3 درصد WS بود (05/0P<). همچنین، بیشترین مقدار وزن سنگدان مربوط به جیره حاوی 6 درصد WS و کمترین مقدار اوزان مربوط به سینه و ران نیز مربوط به جیره‌های حاوی سبوس برنج بودند (05/0P<). اما تیمارهای مذکور اثری روی سایر بخش‌ها نداشتند (05/0P>). در کل، افزودن مقادیر 3 تا 6 درصد الیاف نامحلول، به جز 6 درصد WS به جیره‌های برپایه گندم موجب بهبود عملکرد رشد در جوجه‌های گوشتی می‌گردد.
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