بررسی تأثیر ساختار فیزیکی خوراک و تراکم، بر عملکرد و برخی فراسنجه‌های رفتاری با استفاده از ‏پردازش تصویر در جوجه‌های گوشتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ‏ملاثانی

2 دانشیار، دانشکده علوم دامی و صنایع غذایی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی

3 استادیار، گروه مکانیک، دانشکده مهندسی زراعی، دانشگاه علوم کشاورزی و منابع طبیعی خوزستان، ملاثانی

چکیده

این آزمایش به منظور مطالعه تأثیر ساختار فیزیکی خوراک و تراکم­ بر عملکرد و برخی فراسنجه‌های رفتاری جوجه‌های گوشتی با استفاده از 208 جوجه یکروزه سویه راس 308 به مدت 42 روز انجام شد. گروه‌های آزمایشی شامل دو ساختار فیزیکی خوراک (پلت و آردی) و دو سطح از تراکم (10 و16 قطعه پرنده در هر مترمربع) بودند که در قالب طرح کاملاً تصادفی با آرایش فاکتوریل 2×2 در چهار تکرار انجام شد. عملکرد به صورت هفتگی وخصوصیات لاشه در 42 روزگی اندازه‌گیری شد. جهت بررسی رفتار پرندگان، و پوشش تمام واحدهای آزمایشی از 8 دوربین فیلم­برداری استفاده شد. نتایج نشان داد در کل دوره پرورش، مصرف خوراک، اضافه وزن و ضریب تبدیل خوراک در پرندگان تغذیه شده از جیره پلت به­طور معنی‌داری نسبت به خوراک آردی بهبود یافت (05/0>P). درصد چربی حفره بطنی، در پرندگان مصرف‌کننده­ خوراک آردی در تراکم بالا، افزایش یافت (05/0>P). شاخص فعالیت در پرندگان تغذیه‌شده با  خوراک آردی در تراکم بالا در نوبت صبح هفته سوم افزایش یافت (05/0>P). نتایج این پژوهش نشان داد که در شرایط پرورش متراکم، تغییر ساختار فیزیکی خوراک نمی‌تواند فراسنجه‌های عملکردی و رفتاری را تحت تأثیر قرار دهد، اگرچه جیره پلت‌شده باعث بهبود فراسنجه‌های عملکردی و تراکم بالا، سبب افزایش میانگین تجمع اطراف دانخوری در مقایسه با تراکم طبیعی در پرندگان شد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of feed form and stock density on performance assessed and some behavioral ‎parameters assessed by image processing, in broiler chickens

نویسندگان [English]

  • Farshid Jamalpor 1
  • Somayyeh Salari 2
  • Saman Abdanan Mehdizadeh 3
1 M.Sc. Graduate, Department of Animal Science, Agricultural Sciences and Natural Resources University of ‎Khuzestan, Mollasani, Iran, P.O. Box: 6341773637‎
2 Associate Professor, Department of Animal Science, Agricultural Sciences and Natural Resources University of Khuzestan, ‎Mollasani, Iran, P.O. Box: 6341773637‎
3 Asisstant Professor, Department of Biosystem Sciences, Agricultural Sciences and Natural Resources University of Khuzestan, ‎Mollasani, Iran
چکیده [English]

This experiment was conducted to evaluate effect of feed form and stocking density on performance and some behavioral parameters of 208 one-day-old broiler chickens (Ross 308), for 42 days.  Treatments were 2 feed forms (pellet versus mash) and 2 levels of density (10 and 16 birds/m2) that was performed in completely randomized design with 2×2 factorial arrangement and 4 replicates. Performance parameters were recorded weekly and carcass characteristics measured on day 42 of age. For evaluating behavioral parameters, 8 cameras were used. The results showed that feed intake, body weight gain and feed conversion ratio were improved in broilers fed pellet diets compared to the birds fed mash diets at whole period of experiment (P<0.05). Abdominal fat was increased in birds that consumed mash diet in high stocking density (P<0.05). In the morning of the third week, the activity index of birds that consumed mash diet in high stocking density increased significantly (P<0.05). The results of this study indicate that feed form could not affect performance and behavioral parameters of broilers in high stocking density, although, pelleting diets improved performance parameters and high stock density increased average around feeder activity of broiler chickens.

کلیدواژه‌ها [English]

  • Activity index
  • carcass characteristics
  • feed intake
  • feed conversion ratio
  • pellet

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علوم دامی ایران
دوره 52، شماره 3
آذر 1400
صفحه 141-152

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سابقه مقاله

  • تاریخ دریافت: 05 اسفند 1399
  • تاریخ بازنگری: 10 خرداد 1400
  • تاریخ پذیرش: 01 تیر 1400

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