نوع مقاله : مقاله پژوهشی
نویسندگان
1 کارشناس ارشد دفتر طیور وزارت جهاد کشاورزی
2 عضو هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی رامین
3 عضو هیئت علمی موسسه تحقیقات علوم دامی
4 عضو هیئت علمی دانشگاه علوم کشاورزی و منابع طبیعی رامین خوزستان
5 عضو هیئت علمی سازمان تحقیقات، آموزش و ترویج کشاورزی.
چکیده
تاثیر شکل فیزیکی خوراک، رقم جو و افزودن آنزیم بر قابلیت هضم ایلئومی مواد مغذی و انرژی قابل متابولیسم جیره جوجههای گوشتی با استفاده از 972 قطعه جوجه گوشتی سویه راس در یک آزمایش فاکتوریل 2×2×3 با سه رقم جو (فجر، ریحانه و یوسف)، دو شکل فیزیکی خوراک (آردی و پلت) و دو سطح آنزیم (صفر و 05/0گرم در کیلوگرم) در قالب یک طرح پایه کاملاً تصادفی با سه تکرار و 27 قطعه جوجه در هر تکرار، بررسی شد. جیره های حاوی جو رقم ریحانه در مقایسه با سایر ارقام قابلیت هضم ایلئومی پروتئین و چربی، انرژی خالص، انرژی قابل متابولیسم ظاهری و انرژی قابل متابولیسم ظاهری تصحیح شده برای ازت بالاتری داشتند (05/0P<). پلت نمودن جیرهها، انرژی خالص، انرژی قابل متابولیسم ظاهری و انرژی قابل متابولیسم ظاهری تصحیح شده برای ازت را کاهش (05/0P<) و افزودن آنزیم به جیرهها مقدار این شاخصها و همچنین قابلیت هضم پروتئین و چربی را افزایش داد (05/0P<). با توجه به این نتایج، استفاده از آنزیم در جیره حاوی جو رقم ریحانه به شکل پلت در تغذیه جوجههای گوشتی، قابلیت هضم و انرژیزایی جیره را افزایش میدهد.
کلیدواژه‌ها
عنوان مقاله [English]
Effect of physical form, barley variety and enzyme addition on nutrient ileal digestibility and apparent metabolizable energy of broiler diets
نویسندگان [English]
- mohammad Bojarpour 2
- Akbar Yaghoobfar 3
- somayeh salari 4
چکیده [English]
This experiment was conducted to evaluate the effects of physical form, barley variety and enzyme addition on Ileal digestibility, apparent metabolizable energy (AME) and energy efficiency of broiler chickens.The experiment was carried using a factorial experiment with a completely randomized desiegn. Factors were barley varity (Fajr, Reyhaneh, and Yosef), diet form (mash or pellet) and enzyme level (0 and 0/05 g/kg dry matter). Here 927 one day-old Ross 308 broiler chickens were assigned to 12 treatments, 3 replicates and 27 chickens in each replicate. The results of experiment indicated that the digestibility of nutrients, AME, apparent metabolizable energy corrected to zero nitrogen retention (AMEn) and energy efficiencies (NE/AMEn) affected by barley variety (p <0/05). Net Energy (NE) affected by main and interaction effects (P < 005). Diets containing Ryhaneh barley variety in comparison with other varietys, increased Ileal Digestibel Protein (IDP), Ileal Digestibel fat (IDF), NE, AME and AMEn (P <0/05). Although pelleting decreased Ileal Digestibility of nutrients (p>005), NE, AME and AMEn (p <0/05), addition of enzyme to diet increased this indicators (P <0/050). According to these results, the use of pellet diet containing Ryhaneh variety with enzyme improved digestibility and energy efficiency and thus it's recommended to be used in poultry nutrition.
کلیدواژه‌ها [English]
- Barley variety
- Broiler Chickens
- ileal digestibility
- Metabolizable energy
- Physical form
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