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تأثیر سطوح مختلف انرژی بر عملکرد، اجزای لاشه و برخی فراسنجه‌های خونی در جوجه‌های گوشتی نر سویۀ آرین در شرایط القای آسیت

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری تغذیۀ طیور، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

2 استاد گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

چکیده

در این آزمایش با استفاده از طرح بلوک­های کامل تصادفی تأثیر سه سطح انرژی در چهار تکرار شامل؛ 1-سطح انرژی جیره برابر راهنمای سویۀ آرین، 2-کاهش سطح انرژی جیره به میزان 100 کیلوکالری در دورۀ آغازین و 150 کیلوکالری در دورۀ رشد و پایانی نسبت به راهنمای سویۀ آرین، 3- کاهش سطح انرژی جیره به میزان 200 کیلوکالری در دورۀ آغازین و 300 کیلوکالری در دورۀ رشد و پایانی نسبت به راهنمای سویۀ آرین بر عملکرد و پیشگیری از عارضۀ آسیت 60 قطعه جوجۀ گوشتی نر در طول شش هفته بررسی شد. در طول آزمایش وزن بدن، خوراک مصرفی، ضریب تبدیل غذایی، درصد تلفات و شاخص تولید تعیین شد. در 35 روزگی هماتوکریت و فراسنجه­های خونی اندازه­گیری شد. در پایان آزمایش ویژگی­های لاشه و نسبت بطن راست به کل بطن تعیین و مقایسه شد. کاهش سطح انرژی جیره افزایش وزن بدن و مصرف خوراک را افزایش داد (05/0>P). هزینۀ خوراک به ازای هر کیلوگرم افزایش وزن با کاهش سطح انرژی جیره کاهش یافت (05/0>P). کاهش انرژی جیره مقادیر هموگلوبین، و هماتوکریت را کاهش داد (05/0>P) و سطح کورتیکواسترون افزایش یافت (05/0>P). هورمون T3 تحت تأثیر کاهش انرژی جیره قرار نگرفت ولی T4 با کاهش سطح انرژی جیره افزایش یافت (05/0>P) و همچنین نسبت T3 به T4 با کاهش سطح انرژی جیره کاهش یافت (05/0>P). با توجه به نتایج کاهش سطح انرژی جیره به‌صورت تیمار شمارۀ 2 (یادشده در بالا) از لحاظ عملکرد و شاخصهای مرتبط به آسیت بهتر از دو گروه دیگر بود.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of different levels of dietary energy on performance, carcass components and some blood parameters in Arian male broiler chickens in the inducing ascites

نویسندگان [English]

  • Behzad Sadighi Sheykh-hasan 1
  • Mahmood Shivazad 2
  • Mojtaba Zaghari 2
چکیده [English]

In this study 60 Arian male chickens for six weeks were used in a completely randomized block to evaluate the effect of three dietary energy level on performance and prevention ascites. Diets energy levels were: as catalog; 100 and 150 kcal lower in starter and grower and finisher periods; 200 kcal and 300 kcal lower in starter and grower that catalog respectively. During the experiment, body weight, feed intake, feed conversion ratio, mortality rate and production index were determined. Hematocrit and blood parameters were measured at 35 days of age. At the end of the experiment, carcass characteristics and the right ventricle (RV) weight and total ventricle (TV) weight ratios were determined and compared. Reducing dietary energy level was increased body weight gain and feed intake (P<0.05). Feed cost per kg of weight gain was reduced by reducing dietary energy level (P<0.05). Reducing dietary energy level decreased the amount of hemoglobin and hematocrit (P<0.05) and increased the cortisol level (P<0.05). T3 hormone was not affected by diet energy, but T4 was increased by Reducing dietary energy (P<0.05). Also T3 to T4 ratios was reduced by Reducing dietary energy (P<0.05). Results showed that reducing 100 kcal diet energy in starter and 150 kcal in the grower and finisher periods than the Arian catalog was performed better than the other two energy levels on performance and parameters related to ascites.

کلیدواژه‌ها [English]

  • ascites
  • dietary energy
  • growth performance
  • male broiler chickens
  1. Acar, N., Sizemore, F., Leach, G., Wideman, R., Owen, R. & Barbato, G. (1995). Growth of broiler chickens in response to feed restriction regimens to reduce ascites. Poultry Science, 74, 833-843.
  2. Angulo, E., Brufau, J., Miquel, A. & Esteve-García, E. (1993). Research note: Effect of diet density and pelleting on productive parameters of Japanese quail. Poultry science, 72, 607-610.
  3. Balog, J. M. (2003). Ascites syndrome (pulmonary hypertension syndrome) in broiler chickens: are we seeing the light at the end of the tunnel? Avian and Poultry Biology Reviews, 14, 99-126.
  4. Gonzales, E., Buyse, J., Loddi, M., Takita, T., Buys, N. & Decuypere, E. (1998). Performance, incidence of metabolic disturbances and endocrine variables of food-restricted male broiler chickens. British poultry science, 39, 671-678.
  5. Griffiths, L., Leeson, S. & Summers, J. (1977). Fat deposition in broilers: Effect of dietary energy to protein balance, and early life caloric restriction on productive performance and abdominal fat pad size. Poultry Science, 56, 638-646.
  6. Hassanzadeh Ladmekhi, M. (1999). Review on the occurrence of ascites syndrome in broilers. Journal of Tehran University Faculty of Veterinary Medicine, 54, 63-66.
  7. Holsheimer, J. & Veerkamp, C. (1992). Effect of dietary energy, protein, and lysine content on performance and yields of two strains of male broiler chicks. Poultry Science, 71, 872-879.
  8. Holsheimer, J. & Ruesink, E. (1993). Effect on performance, carcass composition, yield, and financial return of dietary energy and lysine levels in starter and finisher diets fed to broilers. Poultry Science, 72, 806-815.
  9. Jones, G. & Farrell, D. (1992). Early‐life food restriction of broiler chickens i. methods of application, amino acid supplementation and the age at which restrictions should commence. British Poultry Science, 33, 579-587.
  10. Julian, R. J. (1993). Ascites in poultry. Avian pathology, 22, 419-454.
  11. Julian, R. J. (2000). Physiological, management and environmental triggers of the ascites syndrome: a review. Avian Pathology, 29, 519-527.
  12. Julian, R. J., McMillan, I. & Quinton, M. (1989). The effect of cold and dietary energy on right ventricular hypertrophy, right ventricular failure and ascites in meat‐type chickens. Avian Pathology, 18, 675-684.
  13. Khajeh Ali, F. & Khajeh Ali, F. (2011). Physiological parameters of broiler chickens healthy and suffering from subclinical ascites. Journal of Iran Animal Science, 42, 355-360.
  14. Khzrayynya, P., Arab, H., Zaim, M., Jamshidi, R. & Khzrayynya, S. (2009). Changes clinical pathology experimental ascites syndrome in broilers. Research and Development, 28. (in Farsi)
  15. Leeson, S., Caston, L. & Summers, J. (1996). Broiler response to energy or energy and protein dilution in the finisher diet. Poultry Science, 75, 522-528.
  16. Luger, D., Shinder, D., Wolfenson, D. & Yahav, S. (2003). Erythropoiesis regulation during the development of ascites syndrome in broiler chickens: A possible role of corticosterone. Journal of animal science, 81, 784-790.
  17. Luger, D., Shinder, D., Rzepakovsky, V., Rusal, M. & Yahav, S. (2001). Association between weight gain, blood parameters, and thyroid hormones and the development of ascites syndrome in broiler chickens. Poultry science, 80, 965-971.
  18. Maxwell, M. & Robertson, G. (1997). World broiler ascites survey 1996. Poultry international, 36, 16-33.
  19. NRC. (1994). Nutrient requirements of poultry. 9th rev. ed. National Academy Press, Washington, DC.
  20. Özkan, S., Plavnik, I. & Yahav, S. (2006). Effects of early feed restriction on performance and ascites development in broiler chickens subsequently raised at low ambient temperature. The Journal of Applied Poultry Research, 15, 9-19.
  21. Plavnik, I. & Hurwitz, S. (1988). Early feed restriction in chicks: effect of age, duration, and sex. Poultry Science, 67, 384-390.
  22. Rezaei, M., Teimouri, A., Pourreza, J., Sayyahzadeh, H. & Waldroup, P. (2006). Effect of diet dilution in the starter period on performance and carcass characteristics of broiler chicks. Journal of Central European Agriculture, 7, 63-70.
  23. Sahraei, M. & Shariatmadari, F. (2007). Effect of different levels of diet dilution during finisher period on broiler chickens performance and carcass characteristics. International Journal of Poultry Science, 6, 280-282.
  24. SAS Institute. (2002). JMP: Statistics and Graphics Guide. Version 9. SAS Institute Inc., Cary, NC.
  25. Shahir, M., Dilmagani, S. & Tzschentke, B. (2012). Early-age cold conditioning of broilers: effects of timing and temperature. British poultry science, 53, 538-544.
  26. Wideman, R. F. (2000). Cardio-pulmonary hemodynamics and ascites in broiler chickens. Poultry and Avian Biology Reviews, 11, 21-44.
  27. Zahireddin, H., Mirae Ashtiani, R., Shivazad, M. & Nikkhah, A. (2001). Effects of dietary energy and nutrient concentrations on Arian broilers performance. Science and Technology of Agriculture and Natural Resources, 5. (in Farsi)