اثر سطح استفاده از مولتی آنزیم های مختلف تجاری بر انرژی قابل سوخت و ساز و قابلیت هضم مواد مغذی گندم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری گروه علوم دامی، دانشکده کشاورزی، پردیس بین‌الملل، دانشگاه فردوسی مشهد،

2 استاد گروه علوم دامی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

3 استادیار گروه علوم دامی، دانشکده کشاورزی، دانشگاه فردوسی مشهد

چکیده

این آزمایش به منظور بررسی اثر چهار نوع مولتی­آنزیم تجاری و سطوح مختلف آن­ها بر انرژی قابل سوخت‌وساز ظاهری تصحیح شده برای نیتروژن (AMEn) و قابلیت هضم چربی خام، پروتئین خام، ماده خشک و ماده آلی گندم با روش جمع­آوری کل فضولات در جوجه­های گوشتی انجام گرفت. تعداد 135 قطعه جوجه خروس گوشتی سویه راس 308 به 45 قفس متابولیکی شامل نه تیمار، پنج تکرار و سه قطعه جوجه در هر تکرار اختصاص یافتند. جیره­های آزمایشی به نحوی تنظیم شدند که گندم تنها منبع تأمین‌کننده انرژی باشد. با افزودن یک و دو برابر مقدار توصیه شده هر یک از چهار مولتی­آنزیم تجاری به جیره پایه، هشت جیره آزمایشی دیگر تهیه شد. جوجه­ها به دان و آب دسترسی آزاد داشتند و از 23-17 روزگی با جیره­های آزمایشی تغذیه شدند. افزودن یک یا دو برابر مقادیر توصیه شده مولتی‌آنزیم­های تجاری، باعث افزایش معنی­دار AMEn و قابلیت هضم ظاهری چربی خام، پروتئین خام، ماده خشک و ماده آلی گندم شد (05/0>P)، اما تفاوت معنی‌داری بین اثر نوع مولتی­آنزیم­ها و سطوح آنها بر شاخص­های فوق مشاهده نشد. نتایج تحقیق حاضر نشان داد که افزودن مولتی‌آنزیم­های تجاری باعث بهبود انرژی قابل سوخت‌وساز ظاهری گندم فلات به میزان 70 تا 120 کیلوکالری در کیلوگرم می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of different level of commercial multi enzymes on wheat metabolizable energy and nutrient digestibility

نویسندگان [English]

  • Fereshteh Jamile 1
  • Abolghasem Golian 2
  • Hasan Kermanshahi 2
  • Ahmad Hasanabadi 2
  • Heydar Zarghi 3
1 Ph.D. Student, Department of Animal Science, Faculty of Agriculture, International Campus, Ferdowsi University of Mashhad,
2 Professor, Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad
3 Assistant Professor, Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad
چکیده [English]

The purpose of this study was to determine the effect of two levels of four commercial multi-enzymes on the apparent metabolizable energy corrected for nitrogen (AMEn) and digestibility of crude fat, crude protein, dry matter, and organic matter in broiler chickens through total excreta collection method. One hundred thirty male broiler chicks were assigned to 45 metabolic cages involving 9 treatments, and 5 replicates of 3 chicks each. A control diet was made so that wheat was the sole source of energy supply. Eight experimental diets were prepared with the addition of one or two recommended levels of each commercial multi-enzymes to the control diet. The chickens had free access to feed and water ad-libitum from 17 to 23 days of age. Gross energy, crude protein, crude fat, organic matter, and dry matter were measured in feed and excreta samples. Addition of one or two recommended levels of different commercial enzymes to diet significantly increased (P< 0.05) AMEn and apparent digestibility of fat, protein, dry matter, and organic matter in wheat. However, there was not a significant difference between the levels and the four types of added commercial enzymes on AMEn and nutrient digestibility values. The results revealed that metabolisable energy value of Falat wheat improved by 70 to 120 kcal per kg, regardless of the type and activity of the four commercial enzymes used in this study.

کلیدواژه‌ها [English]

  • Broiler Chicken
  • commercial multi-enzymes
  • digestibility of nutrients
  • Metabolizable energy
  • Wheat
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