نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

2 دانش آموخته کارشناسی ارشد، گروه علوم دامی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان، ایران.

چکیده

تاثیر استفاده از اسید استیک، اسید‌بوتیریک و اسیدپروپیونیک و پروبیوتیک بر عملکرد تولیدی مرغ‌های تخم‌گذار و برخی فراسنجه های کیفی تخم‌مرغ با استفاده از 320 قطعه مرغ تخم‌گذار سویه بوونز در یک آزمایش فاکتوریل 2×4 با چهار سطح اسید چرب (بدون اسید چرب، 0/1 درصد جیره، اسید پروپیونیک، 0/2 درصد جیره، اسید بوتیریک، 0/3 درصد جیره) و دو سطح پروبیوتیک (صفر و 0/01 درصد جیره) در قالب طرح کاملا تصادفی با هشت تیمار و پنج تکرار و هشت قطعه پرنده در هر تکرار بررسی شد. میانگین وزن تخم‌مرغ، ضریب تبدیل ، درصد تولید و توده تخم‌مرغ تولیدی تحت تاثیر تیمار‌های آزمایشی قرار نگرفت. مکمل سازی جیره با اسید آلی، مصرف خوراک را به‌طور معنی‌داری افزایش داد (0/05>P). درصد، قطر و شاخص رنگ زرده تحت تاثیر تیمارها قرار نگرفت، ولی ارتفاع زرده در پرندگانی که اسید های چرب یا پروبیوتیک دریافت کردند بهبود یافت (0/05>P). وزن مخصوص، درصد پوسته و ضخامت پوسته تحت تاثیر تیمارهای آزمایشی قرار نگرفت. جیره‌های حاوی اسید آلی و پروبیوتیک مقاومت پوسته را در مقایسه با گروه فاقد افزودنی بهبود بخشید (0/05>P). به طور کلی نتایج این پژوهش نشان داد که مکمل‌های اسید آلی و پروبیوتیک با تاثیر مثبت بر مصرف خوراک، وزن تخم‌مرغ، ارتفاع زرده تخم‌مرغ و مقاومت پوسته سبب بهبود عملکرد تولیدی و کیفیت تخم‌مرغ تولیدی می شود.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of short chain fatty acids and probiotic on the productive performance of laying hens and egg quality parameters

نویسندگان [English]

  • Mohsen Afsharmanesh 1
  • Maryam Rezaeipour 2
  • Mohamad Salarmoini 1

1 Associate Professor, Department of Animal Sciences, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.

2 M.Sc. Student, Department of Animal Sciences, Faculty of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran.

چکیده [English]

The effect of use of acetic acid, propionic acid, butyric acid, and probiotic on productive performance of laying hens and some quality parameters of produced eggs was evaluated using an experiment with 320 Bowens laying hens, in a 4×2 factorial experiment with four fatty acid levels (no additive, 0.1 % diet, propionic acid, 0.2 % diet, butyric acid and 0.3 % diet, acetic acid) and two levels of probiotic (0 and
0.01% diet) in a completely randomized design with 8 treatments, 5 replications and 8 birds per replication. The results of production performance showed that the egg weight, feed conversion ratio, production percentage and egg mass parameters, were not affected by the experimental groups. The main effects showed that organic acid supplementation significantly increased feed intake (P<0.05). It was shown
that the percentage, diameter and color index of the yolk were not affected but the height of the yolk was improved by supplements (P<0.05). The results of shell quality also showed that specific gravity, shell percentage and shell thickness were not affected by the experimental groups, but diets containing organic acids and probiotic significantly improved shell resistance compared with non-additive group (P<0.05).
It could be concluded that organic acid and probiotic supplements with a positive effect on feed consumption, egg weight, egg yolk height and shell resistance, improved production performance and quality of produced eggs.

کلیدواژه‌ها [English]

  • Bovans Laying hens
  • egg quality
  • organic acid
  • performance parameters
  • Probiotic
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