Interactive Influence of Formycine® Gold and Pigment on Egg Quality and Performance of Laying Hens
محورهای موضوعی : Camelح. کرمانشاهی 1 , م. پیله‌ور 2 , م. اعمی-ازغدی 3
1 - Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
2 - Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
3 - Department of Animal Science, Ferdowsi University of Mashhad, Mashhad, Iran
کلید واژه: pigment, laying hen, sodium bentonite, Formycine®, Gold,
چکیده مقاله :
Sodium bentonite can bind to dietary pigment and decreases yolk color scale. Sodium bentonite is one of the main parts of Formycine® Gold, the effect of different levels of Formycine® Gold and dietary pigment on egg quality, egg yolk color and performance criteria of laying hens from 26 to 34 week of age were studied. One hundred ninety two Hy-Line hens were divided into 24 groups of 8 birds each and randomly assigned to 6 dietary treatments of 4 replicates each. The study was conducted in a completely randomized design with a 2 × 3 factorial arrangement of treatments based on 2 levels of pigment (0 and 0.4 g/kg) and 3 levels of Formycine® Gold (0, 1 and 2 g/kg). Feed intake, body weight, feed to egg ratio and egg productions were recorded at the end of the weeks 28, 30, 32 and 34. Egg quality characteristics including egg weight, specific gravity, yolk color scale, egg shell percentage and thickness were evaluated every other week. Formycine® Gold and dietary pigment had no effect on performance for entire of the experiment. Egg shell weight and thickness increased by 0.4 g/kg dietary pigment at 29-30 weeks of age. Hen-day egg production was not influenced by dietary treatments. Egg specific gravity was similar in hens fed different levels of Formycine® Gold and pigment, except for 29-30 weeks of age. Regardless of Formycine® Gold levels, diet supplemented with pigment considerably increased yolk color scale. It seems that, by decreasing the amount of sodium bentonite in Formycine® Gold, it can be used without any adverse effect on egg quality, egg pigmentation and performance of laying hens.
بنتونیت سدیم از طریق ایجاد باند با رنگدانههای خوراکی سبب کاهش شاخص رنگ زرده میشود. از آنجاییکه بنتونیت سدیم یکی از اجزاء اصلی ماده تجاری فورمایسین® گلد است، در این پژوهش تأثیر سطوح مختلف فورمایسین و رنگدانههای خوراکی بر روی کیفیت تخم مرغ، رنگ زرده تخم مرغ و عملکرد مرغان تخمگذار در سن 26 تا 34 هفته مورد ارزیابی قرار گرفت. تعداد 192 قطعه مرغ نژاد‌های لاین 36- Wبه طور تصادفی به 24 گروه با 8 قطعه در هر کدام تقسیم شدند. دو سطح رنگدانه (0 و 4/0 گرم در کیلوگرم) و سه سطح فورمایسین (0، 1 و 2 گرم در کیلوگرم) به روش طرح کاملاً تصادفی در قالب آزمایشات فاکتوریل (2×3) مورد ارزیابی قرار گرفت. میزان مصرف خوراک، وزن بدن، ضریب تبدیل تخم مرغ و میزان تولید تخم مرغ در پایان هفتههای 28، 30، 32 و 34 اندازهگیری شد. ویژگیهای کیفی تخم مرغ شامل وزن، وزن مخصوص، شاخص رنگ زرده، درصد وزن و ضخامت پوسته هر دو هفته یکبار ثبت گردید. فورمایسین® گلد و رنگدانه تأثیری بر روی عملکرد مرغان تخمگذار در کل دوره آزمایش نداشت. وزن و ضخامت پوسته در پرندگانی که از جیره حاوی 4/0 گرم در کیلوگرم رنگدانه استفاده کرده بودند در هفتههای 29 و 30 افزایش یافت. تولید روزانه تخم مرغ تحت تأثیر هیچ یک از تیمارها قرار نگرفت. تیمارهای آزمایشی حاوی فورمایسین و رنگدانه به جز در هفتههای 29 و 30 تأثیری بر روی وزن مخصوص نداشتند. صرف نظر از سطوح افزوده شده فورمایسین، شاخص رنگ زرده در پرندگان تغذیه شده با سطوح مختلف رنگدانه به طور معنی داری بهبود پیدا کرد. به نظر میرسد با کاهش میزان بنتونیت موجود در فورمایسین®گلد میتوان از این محصول در جیره مرغان تخمگذار بدون هیچگونه اثرات مضر بر روی عملکرد تولید، کیفیت تخم مرغ و رنگ زرده استفاده کرد.
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