نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده کشاورزی - دانشگاه تربیت مدرس

2 دانشکده کشاورزی - - دانشگاه تربیت مدرس

3 دانشکده کشاورزی - أانشگاه تربیت مدرس

چکیده

هدف از انجام تحقیق حاضر، بررسی تأثیر مصرف دانه جو به صورت کامل به همراه مکمل پلی‌آنزیمی گالی­زیم بر عملکرد و قابلیت هضم مواد مغذی در مرغ‌های تخمگذار بود. در این تحقیق، از 105 قطعه مرغ تخم­گذار سویه­های ­لاین  w-36در سن 40 هفته در قالب طرح کاملاً تصادفی با 5 تیمار، 7 تکرار و 3 قطعه پرنده در هر تکرار استفاده شد. تیمارهای آزمایشی شامل جیره­ شاهد، جیره­ حاوی دانه جو بدون آنزیم، جیره حاوی دانه جو و مکمل آنزیمی گالی­زیم، جیره­ حاوی بلغور جو خرد شده بدون آنزیم، جیره حاوی بلغور جو و مکمل آنزیمی گالی­زیم بودند. اثر تیمارهای آزمایشی بر درصد تولید و وزن تخم‌مرغ معنی‌دار نبود، ولی مرغ‌هایی که با جیره‌های حاوی دانه جو (با یا بدون مکمل­ آنزیمی) تغذیه شدند، مصرف خوراک روزانه بیشتری در مقایسه با پرندگان شاهد داشتند (05/0P<). اثر تیمارهای آزمایشی بر خصوصیات کیفی تخم­مرغ معنی‌دار نبود. افزودن مکمل آنزیمی گالی­زیم به جیره‌های حاوی جو، تأثیری بر انرژی قابل سوخت­و ساز ظاهری جیره، قابلیت هضم ماده آلی و ماده خشک نداشت. استفاده از آنزیم در جیره‌های حاوی بلغور جو قابلیت هضم پروتئین را افزایش داد. براساس نتایج این آزمایش، می‌توان با 50 درصد دانه ذرت در جیره‌هایی بر پایه ذرت و سویا را با دانه جو همراه با مکمل آنزیمی بدون کاهش عملکرد و قابلیت هضم مواد مغذی جایگزین کرد.

کلیدواژه‌ها

عنوان مقاله [English]

The effects of seed and oatmeal with enzyme supplementation in diet of commercial laying hens on performance and nutrient digestibility

نویسندگان [English]

  • Razieh Badiefar 1
  • Farid Shariatmadari 2

1

2

3

چکیده [English]

The aim of this study was to investigate the influence of whole barley with GalyZym poly enzymesupplementation on performance and nutrient digestibility in laying hens. In this study 105 laying hens (w-36) at the age of 40 to 52 weeks were distributed randomly in 5 treatments, with 7 replication, and 3 birds in each. The experimental treatments included control diet, diets containing barley seed without enzyme, diets containing barley and Galyzym enzyme supplementation,diet containing chopped oatmeal without enzyme, diet containing chopped oatmeal and Galyzym enzyme supplementation. Effects of treatments on production and egg weight was not significant, But laying hens that fed a diet containing barley seeds (with or without enzyme supplementation), had more daily feed intake compared to the control birds (P<0.05). Effects of treatments on egg quality characteristics were not significant. Addition of Galyzym enzyme to the diets containing barley had no effect on apparent metabolizable energy of the diet, dry matter and Organic matter digestibility as well. When enzyme was added to the diets containing oatmeal,an increase of protein digestibility were observed.According toresults of this study, 50 percent of corn in corn and soybean meal based diets on can be replaced with barley grain supplemented with enzyme, without decreasing the performances and digestibility of the nutrients.

کلیدواژه‌ها [English]

  • Apparent metabolism energy
  • Beta-glucanase enzymes
  • laying hens
  • Protein
  • Whole grain barley
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