نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری،گروه علوم دامی، دانشکده کشاورزی، دانشگاه بیرجند

2 دانشیار، گروه علوم دامی، دانشکده کشاورزی، عضو هیأت علمی دانشگاه بیرجند، تخصص: تغذیه و پرورش طیور

3 استاد پژوهشی،مؤسسۀ تحقیقات علوم دامی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران.

چکیده

به‌منظور تعیین تأثیر پلی­ساکاریدهای غیرنشاسته­ای بر عملکرد، بازده نسبی انرژی و پروتئین و اجزای لاشه جوجه‌های گوشتی، آزمایشی در دوره سنی یک تا 42 روزگی با استفاده از 420 قطعه جوجه گوشتی یک روزه سویه تجاری راس 308 از مخلوط دو جنس در قالب طرح کاملاً تصادفی با هفت تیمار آزمایشی، شش تکرار و 10 قطعه جوجه در هر تکرار انجام شد. تیمارهای آزمایشی شامل جیره پایه، جیره حاوی 0/1 و 0/2 درصد مخمر ساکارومایسس سرویزیه، جیره حاوی پنج و 10 درصد سبوس گندم، جیره حاوی سه و شش درصد پوسته سویا بودند. نتایج آزمایش نشان داد در کل دوره پرورش تیمار شاهد کمترین خوراک مصرفی را نسبت به سایر تیما‌رهای آزمایشی به خود اختصاص داد (p<0/05). هم‌چنین بیشترین مصرف خوراک مربوط به سطح 10 درصد سبوس گندم و سطوح سه و شش درصد پوسته سویا بود (p<0/05). تیمار آزمایشی حاوی سه درصد پوسته سویا در کل دوره آزمایش نسبت به تیمار شاهد بیشترین میزان افزایش وزن روزانه را نشان داد (p<0/05). برای ضریب تبدیل خوراک در کل دوره آزمایشی اختلاف آماری مشاهده نشد. بیشترین بازده نسبی انرژی مربوط به تیمار حاوی سطوح مخمر نسبت به تیمارهای حاوی سطوح سبوس گندم و پوسته سویا می‌باشد (p<0/05). کمترین بازده نسبی انرژی و پروتئین مربوط به سطح 10 درصد سبوس گندم نسبت به تیمار شاهد بود (p<0/05). بر اساس نتایج این آزمایش، استفاده از سطوح 2/0 درصد مخمر، 10 درصد سبوس گندم و شش درصد پوسته سویا در جیره غذایی جوجه‌های گوشتی توصیه می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

Influence of non-starch polysaccharides of feedstuffs on performance and carcass characteristics of broilers

نویسندگان [English]

  • Fahima Daneshyar 1
  • S. Mohammad Hosseini 2
  • Akbar Yaghobfar 3

1 Department of Animal Science, Faculty of Agriculture, University of Birjand, Birjand, Iran

2 Science member of University of Birjand

3 Animal Science Research Institute, Agricultural Research, Education, and Extension Organization, Karaj, Iran.

چکیده [English]

In order to determine the effect of non-starch polysaccarides on performance, energy and protein efficiencies and carcass characteristics of broiler chicks, an experiment was conducted in three periods of starter, grower and finisher period, using 420 one-day old Ross 308 broiler chicks from both sexes in a completely randomized design with seven treatments, six replicates and 10 chicks per replicate. The experimental treatments were basal diet, diets containing 0.10 and 0.20 percent of Saccharomyces cerevisiae yeast, diets containing 5 and 10 percent of wheat bran, diets containing three and six percent of soybean hull. The results of the experiment showed that the control treatment had the lowest feed intake during the whole period of breeding (P<0.05). The highest feed intake was related to 10 percent wheat bran and levels of 3 and 6 percent soybean hull (P<0.05). Treatments containing 3 percent soybean hull showed the highest daily weight gain (P<0.05) during the whole experiment. There is no statistical difference for the feed conversion ratio during the whole trial period. The highest relative energy efficiency related to yeast levels were compared to treatments containing wheat bran and soybean hull (P<0.05). The lowest relative energy and protein efficiency was related to 10 percent wheat bran compared to control treatment (P <0.05). The results of the experiment showed that the use of two tenths of yeast, 10 percent wheat bran and six percent soybean hull in the diet of broiler chickens is recommended.

کلیدواژه‌ها [English]

  • broiler
  • performance
  • Saccharomyces cerevisiae yeast
  • Soybean hull
  • wheat bran
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