بررسی اثر استفاده از پودر آویشن باغی بر کیفیت تخم‌مرغ و برخی فراسنجه‌های تخمدانی مرغ تخم گذار
محورهای موضوعی : فصلنامه کیفیت و ماندگاری تولیدات کشاورزی و مواد غذاییاحمد مینائی حاوید 1 , مرتضی مهری 2 , محسن شرفی 3
1 - کارشناسی ارشد، گروه علوم دامی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
2 - استادیار، گروه علوم دامی، واحد شهر قدس، دانشگاه آزاد اسلامی، تهران، ایران
3 - دانشیار، گروه علوم دامی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران
کلید واژه: laying hen, Malondialdehyde, مرغ تخم گذار, مالون دی آلدئید, مایع فولیکولی, فولیکول زرد, فولیکول سفید, Follicular Fluid, Yellow Follicles, White Follicles,
چکیده مقاله :
آزمایشی به منظور بررسی اثر سطوح مختلف (0، 1، 2 و 3 درصد) پودر آویشن باغی بر عملکرد تولیدی، ویژگی های کیفی تخم‌مرغ، برخی فراسنجه های تخمدان، میزان مالون دی آلدئید کبد و مایع فولیکولی مرغ های تخم گذار هایلاین W-36 در قالب طرح کاملاً تصادفی با چهار تکرار به مدت 14 هفته انجام گرفت. در دوره 26 تا 33 هفتگی، اثر تیمار ها بر تخم‌مرغ بدون پوسته، درصد تولید، مصرف خوراک و ضریب تبدیل غذایی معنی‌دار نبود؛ اما تیمار 2% پودر آویشن باغی بر وزن توده تخم‌مرغ و وزن تخم‌مرغ روزانه اثر معنی دار داشت (05/0>P). در دوره 34 تا 39 هفتگی نیز اثر تیمار ها بر تولید تخم‌مرغ بدون پوسته، درصد تولید تخم‌مرغ و راندمان خوراک معنی دار نبود، اما تیمار 2% پودر آویشن بر مصرف خوراک، وزن توده تخم‌مرغ و وزن تخم‌مرغ روزانه اثر معنی دار داشت (05/0>P). صفات کیفی تخم مرغ در پایان هفته های 26، 30، 34 و 38 اندازه گیری و مشخص شد تنها واحدها و در هفته 26 تحت تاثیر تیمار های 2 و 3 (حاوی 1 و 2 درصد پودر آویشن باغی) افزایش یافت (05/0>P). شمارش تعداد فولیکول های سفید، زرد کوچک و زرد بزرگ و نیز اندازه گیری مالون دی آلدئید کبد و مایع فولیکولی در پایان دوره نشان داد که هیچ یک از تیمار ها اثر معنی داری بر این صفات نداشتند. در مجموع نتایج آزمایش نشان داد که استفاده از سطح 2% پودر آویشن باغی در جیره مرغ تخم گذار سبب بهبود وزن توده تخم مرغ و میانگین وزن تخم مرغ شده و نیز واحد هاو را در دوره پیک تولید افزایش می دهد.
An experiment was conducted in order to investigate the effect of different levels of Thymus vulgaris powder (0, 1, 2, and 3%) on performance, egg quality, some ovarian parameters, and level of malondialdehyde in the liver and follicular fluid of Hy-Line w36 laying hens. The hens were divided into 4 equal treatment groups and each treatment consisted of 4 replicates in a completely randomized design. In the period of 26 to 33 weeks of age, no significant difference was observed among the dietary treatments in terms of egg production, shell-less egg ratio, feed intake, and feed conversion ratio; but egg weight and egg mass were affected by 2% thymus powder (P<0.05). In the period of 34 to 39 weeks of age, shell-less eggs (%), egg production (%), and feed efficiency were not affected by thymus powder, but feed intake, egg mass, and egg weight were significantly affected by treatment 3 (P<0.05). The egg quality characteristics were measured at the end of weeks 26, 30, 34, and 38 of age. The results showed that only in week 26, the Haugh unit was significantly increased by 1 and 2% thymus powder (P<0.05). At the end of the experiment, the number of white, large yellow, and small yellow follicles, and level of malondialdehyde in the liver and follicular fluid were recorded and none of these were not affected by different levels of thymus powder. Overall, the experimental results showed that the use of 2% thyme powder in the laying hen diet improved the egg mass and egg weight, and also increased the Haugh unit during the peak production period.
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