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تاثیر اندازه ذرات کربنات کلسیم و آنزیم فیتاز و نوع تغذیه بر عملکرد،کیفیت پوسته تخم مرغ و خصوصیات استخوان در مرغ های تخمگذار تجاری | ||
| علوم دامی | ||
| دوره 39، شماره 150، خرداد 1405، صفحه 167-182 اصل مقاله (2.97 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/asj.2025.368004.2446 | ||
| نویسندگان | ||
| وحید صالحی1؛ رضا وکیلی* 1؛ مهدی الهی ترشیزی2 | ||
| 1گروه علوم دامی، واحد کاشمر، دانشگاه آزاد اسلامی، کاشمر، ایران | ||
| 2گروه علوم دامی، واحد مشهد، دانشگاه آزاد اسلامی، مشهد، ایران | ||
| چکیده | ||
| این مطالعه با هدف بررسی اثرات اندازهی ذرات کربنات کلسیم، آنزیم فیتاز با و بدون تغذیهی شبانه بر عملکرد، کیفیت تخم مرغ و استخوان، پارامترهای خونی و قابلیت هضم مواد معدنی در مرغ های تخم گذار از سن 60 تا 70 هفتگی انجام شد. در مجموع 720 قطعه مرغ تخمگذار Hy-line (W-36) در آرایش فاکتوریل 2×2×2 بر اساس طرح کاملا تصادفی با دو نوع اندازهی ذرات کلسیم کربنات (100 درصد ریز (5/0 > میلی متر) و 75 درصد درشت (2-4 میلی متر) + 25 درصد ریز)، دو سطح آنزیم فیتاز (FTU/kg صفر و 300) و تغذیهی شبانه (با و بدون) قرار گرفتند. در طول آزمایش تاثیر معنی دار اندازهی ذرات کربنات کلسیم بر بهبود ضریب تبدیل خوراک و استحکام استخوان درشت نی به دست آمد (05/0P<). آنزیم فیتاز به طور معنی داری منجر به بهبود ضریب تبدیل خوراک، درصد پوستهی تخم مرغ و درصد خاکستر، کلسیم و فسفر درشت نی شد (05/0P<). تغذیهی شبانه منجر به افزایش وزن تخم مرغ، درصد پوستهی تخم مرغ و آلکالین فسفاتاز و کاهش غلظت سرمی کلسیم و فسفر شد (05/0P<). اثر متقابل اندازهی ذرات کربنات کلسیم و فیتاز برای سطح کلسیم سرم معنیدار بود (05/0P<).به طور کلی، نتایج نشان داد که استفاده از ذرات درشتتر کربنات کلسیم همراه با آنزیم فیتاز و برنامه تغذیهی شبانه، موجب بهبود ضریب تبدیل خوراک، کیفیت پوسته تخممرغ و استحکام استخوان شد. این ترکیب میتواند بهعنوان یک راهکار تغذیهای مؤثر برای ارتقای عملکرد تولیدی و سلامت استخوان در مرغان تخمگذار تجاری توصیه شود. | ||
| کلیدواژهها | ||
| کربنات کلسیم؛ فیتاز؛ تغذیه شبانه؛ مرغ تخمگذار؛ اندازه ذرات | ||
| عنوان مقاله [English] | ||
| The impact of limestone particle size, phytase enzyme, and midnight feeding on performance, egg shell quality, and bone characteristics in commercial laying hens | ||
| نویسندگان [English] | ||
| Vahid Salehi1؛ Reza Vakili1؛ mahdi Elahi torshizi2 | ||
| 1Department of Animal Science, Kash.C., Islamic Azad University, Kashmar, Iran | ||
| 2Department of Animal Scince, Ma.C., Islamic Azad University, Mashhad, Iran | ||
| چکیده [English] | ||
| This study was conducted to investigate the effects of calcium carbonate particle size, phytase enzyme with and without nighttime feeding on performance, egg quality, bone characteristics, blood parameters, and mineral digestibility in laying hens aged 60 to 70 weeks. A total of 720 Hy-line (W-36) laying hens were allocated in a 2×2×2 factorial arrangement based on a completely randomized design with two types of calcium carbonate particle sizes (100% fine (<0.5 mm) and 75% coarse (2–4 mm) + 25% fine), two levels of phytase enzyme (0 and 300 FTU/kg), and nighttime feeding (with and without). During the experiment, a significant effect of calcium carbonate particle size was observed on improving feed conversion ratio (FCR) and tibia bone strength (P<0.05). Phytase enzyme significantly improved FCR, eggshell percentage, and ash, calcium, and phosphorus content in the tibia (P<0.05). Nighttime feeding resulted in an increase in egg weight, eggshell percentage, and alkaline phosphatase activity, as well as a reduction in serum concentrations of calcium and phosphorus (P<0.05). The interaction between calcium carbonate particle size and phytase was significant for serum calcium levels (P<0.05). In conclusion, the use of coarser calcium carbonate particles together with phytase supplementation and night feeding improved feed conversion ratio, eggshell quality, and tibia strength. This combination can be recommended as an effective nutritional strategy to enhance productive performance and bone health in commercial laying hens. | ||
| کلیدواژهها [English] | ||
| Calcium carbonate, Phytase, Night feeding, Laying hens, particle size | ||
| مراجع | ||
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