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بررسی تأثیرات تزریق مواد مغذی مختلف به کیسة زردة تخم‌مرغ‌های بارور، همراه با 36 ساعت گرسنگی پس از تفریخ، بر قابلیت جوجه‌کشی، عملکرد رشد و برخی فراسنجه‌های خونی جوجه‌های گوشتی

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش‌آموختۀ کارشناسی ارشد تغذیة دام و طیور، بخش علوم دامی دانشکدة کشاورزی دانشگاه شهید باهنر کرمان

2 دانشیار گروه علوم دامی ، بخش علوم دامی دانشکدة کشاورزی دانشگاه شهید باهنر کرمان

3 کارشناس، مرکز تحقیقات جهاد کشاورزی کرمان (دکتری تغذیة طیور)

4 دانش‌آموختۀ کارشناسی ارشد، بخش علوم دامی دانشکدة کشاورزی دانشگاه شهید باهنر کرمان

چکیده

این تحقیق به منظور مطالعة اثر قابلیت تغذیة جنینی بر درصد جوجه ‌درآوری، وزن اولیه بعد از هچ، عملکرد رشد، فراسنجه‌های خونی، سیستم ایمنی جوجه‌های گوشتی و مورفولوژی پرزهای روده انجام گرفت. در این مطالعه 240 تخم‌مرغ بارور سویة گوشتی راس- 308 (گلة مادر در سن 28 هفتگی)، در قالب طرح کاملاً تصادفی با پنج تیمار استفاده شدند. به هر تیمار سه تکرار و به هر تکرار 16 عدد تخم‌مرغ اختصاص داده شد. تیمارها عبارت بودند از یک تیمار بدون تزریق (شاهد 1) و تزریق 7/0 میلی‌لیتر از مواد مغذی شامل آب مقطر (شاهد 2)، محلول اسیدهای آمینه، دکستروز 10 درصد و دکستروز 20 درصد، به کیسة زردة تخم‌مرغ‌های بارور در روز 5/14 انکوباسیون. جوجه‌ها بعد از هچ به مدت 36 ساعت از دسترسی به خوراک محروم بودند. وزن تولد در تیمار اسید آمینه در مقایسه با تیمار بدون تزریق و تزریق آب مقطر به طور معنا‌داری بیشتر بود (05/0>P). بیشترین افزایش وزن در 22 تا 42 روزگی و کل دوره در تیمار تزریق دکستروز 20 درصد مشاهده شد که با تیمارهای تزریق آب مقطر و بدون تزریق اختلاف معنا‌داری داشت. بیشترین مقدار خوراک مصرفی و ضریب تبدیل غذایی به 22 تا 42 روزگی و کل دورة پرورش در تیمار آب مقطر مربوط بود. گلوکز خون جوجه‌ها پس از هچ در تیمار تزریق آب مقطر و بدون تزریق از سایر تیمارها کمتر بود، همچنین کلسترول در تیمار تزریق آب مقطر کمترین مقدار را نشان داد. تزریق دکستروز 10 درصد سبب افزایش وزن نسبی تیموس (در هفت‌روزگی) شد. همچنین کمترین وزن نسبی بورس فابریسیوس در 42 روزگی در تیمار بدون تزریق مشاهده شد. تزریق دکستروز 10 درصد سبب افزایش طول پرز در مقایسه با سایر تیمارها در سه روزگی شد که البته با تیمار بدون تزریق اختلاف معنا‌داری داشت. بر اساس نتایج این آزمایش، به نظر می‌رسد تزریق کربوهیدرات‌ها به داخل تخم می‌تواند در بهبود عملکرد جوجه‌ها مؤثر باشد.
 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of in ovo feeding of different nutrients into yolk sac and 36 h starvation after hatch on hatchability, growth performance and few blood parameters of broiler chicks

نویسندگان [English]

  • Negin Amiri 1
  • Mohammad Salarmoini 2
  • Shima Tasharrofi 3
  • Mohadeseh Eslami 4
1 Former Graduate Student, Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, kerman, Iran
2 Associate Professor, Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, kerman, Iran
3 Ph.D. Student, Poultry Nutrition, Consultant of Agricultural Organization of Kerman, Iran
4 Former Graduate Student, Department of Animal Science, College of Agriculture, Shahid Bahonar University of Kerman, kerman, Iran
چکیده [English]

This study was conducted to evaluate the effects of in ovo feeding of different nutrients on hatchability, initial weight after hatch, growth performance, blood parameters, immune organs and intestinal morphology of broiler chicks. The experiment was conducted in a completely randomized design with 5 treatments, 3 replicates and 16 fertile eggs from Ross 308 breeders (28 Week old) in each replicate. Experimental treatments Included: without injection (control) and injection of 0.7 ml of different nutrients into the yolk sac of fertile eggs on 14.5 d of incubation period, including: distilled water (sham), amino acids, dextrin 10% and dextrin 20%. Chicks were fasted for 36 hours after hatch.The results showed that in ovo injection of amino acids can led to heavier birth weight, in compare to sham and control treatments. Chicks hatched from eggs treated with dextrose 10% showed significantly the highest weight gain in 22- 42 d priod. Also, at the same time, chicks hatched from egges injected with distilled water (sham) showed significantly the highest feed intake and FCR. Blood glucose level after hatch were significantly lower in control and shame treatments than other treatment. Blood cholesterol level was significantly lower in shame treatment. In ovo injection of dextrin 10% led to higher relative weight of thymus (at 7 d of age). Also, the lowest relative weight of bursa at 42 d was for control treatment.Jejunal villus highet in chicks aged 3 d was significantly higher for those hatched from eggs treated with dextrin 10%.In conclusion, it seems that in ovo injection of nutrients especially dextrin 10% and 20% can be helpful to improve the performance of broilers.

کلیدواژه‌ها [English]

  • Amino acid
  • In Ovo feeding
  • Broilers
  • dextrin
  • yolk sac
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