نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه علوم دامی، دانشکده کشاورزی، دانشگاه لرستان، خرم آباد، ایران

2 دانشگاه لرستان، تخصص: تغذیه نشخوارکنندگان/ سیستم های ارزشیابی خوراک/ فرآوری مواد خوراکی/ مدلسازی در علوم دامی/ دام های کوچک و بزرگ

3 گروه علوم دامی، دانشکده کشاورزی، دانشگاه لرستان، ایران

چکیده

تأثیر افزودن سبوس برنج بر عملکرد رشد، خصوصیات لاشه، قابلیت هضم ایلئومی مواد مغذی و برخی فراسنجه­های خونی جوجه‏های گوشتی با استفاده از 240 قطعه جوجه گوشتی (مخلوط نر و ماده) یک­روزه سویه راس در قالب طرح کاملاً تصادفی با چهار تیمار، پنج تکرار و 12 قطعهدر هر تکرار بررسی شد. تیمارهای آزمایشی شامل جیره شاهد و جیره­های حاوی 5/2، پنج و 5/7 درصد سبوس برنج بودند. نتایج این مطالعه نشان داد که اگرچه در تمامی سطوح مصرفی، افزودن سبوس برنج به جیره باعث کاهش معنی­داری در میزان خوراک مصرفی و افزایش وزن روزانه در طول دوره آغازین، رشد و در کل دوره پرورش شد (05/0>P ولی تاثیر نامطلوبی بر ضریب تبدیل خوراک و شاخص کارایی تولید جوجه­های گوشتی در کل دوره پرورش نداشت. اگرچه افزودن سطح پنج درصد سبوس برنج باعث افزایش معنی­دار وزن نسبی دوازدهه و ایلئوم نسبت به گروه شاهد شد (05/0>P) ولی این افزایش سبب بهبود قابلیت هضم مواد مغذی نشد. وزن نسبی کبد با افزودن سبوس برنج به جیره­ جوجه­های گوشتی به صورت خطی افزایش یافت (05/0>P)، ولی وزن نسبی بورس فابریسیوس در جوجه­­های تغذیه شده با جیره­های جاوی سبوس برنج تفاوت معنی­داری با جوجه­های گروه شاهد نداشت (05/0<P). تغذیه جوجه­ها با جیره حاوی 5/7 درصد سبوس برنج، غلظت گلوکز سرم خون را به طور معنی­داری در مقایسه با جوجه­های تغذیه شده با جیره­های حاوی 5/2 و 5 درصد سبوس برنج افزایش داد (05/0>P). افزودن سبوس برنج به جیره، غلظت کلسترول و VLDLسرم خون جوجه­های گوشتی را به طور خطی افزایش داد (05/0>P). نتایج این مطالعه نشان داد که، استفاده از سبوس برنج به صورت خام و بدون فرآوری در جیره جوجه‏های گوشتی مناسب نیست.

کلیدواژه‌ها

عنوان مقاله [English]

Effects of dietary inclusion of rice bran on production performance and ileal digestibility of nutrients in broiler chickens

نویسندگان [English]

  • Hasan Dalvand 1
  • Arash Azarfar 2
  • abbas masoudi 3

1 Animal Science department, Faculty of Agriculture, Lorestan University, Khorramabad, Iran

2

3 Department of Animal Science, Faculty of Agriculture, University of Lorestan, Khorramaabad, Iran

چکیده [English]

Effects of dietary inclusion of rice bran on production performance, carcass characteristics, ileal digestibility of nutrients and some blood parameters were studied using 240 day-old (mixture of male and female chickens) Ross broiler chicken which assigned in a completely randomized design to four treatments with five replicates of 12 birds each. The experimental treatments included control diet and diets containing 2.5, five and 7.5% of rice bran. The results of this study showed that although dietary inclusion of rice bran for all inclusion levels resulted in significant reduction (P<0.05) in feed consumption and daily gain in starter, grower and entire rearing period, it had no undesirable effects on feed conversion ratio and production efficiency index for the entire rearing period. Even though the addition of rice bran at level of 5% caused significant increase (P<0.05) in relative weight of duodenum and ileum in comparison with control group, this increase did not lead to improved digestibility of nutrient. Dietary inclusion of rice bran linearly increased the relative weight of liver (P<0.05), but the relative weight of Bursa of Fabricius in chicks fed diets containing rice bran was not significantly different with that of in control birds (P>0.05). Feeding chicks with diets containing 7.5% rice bran significantly elevatedserum concentration of glucose compared with those fed diets containing 2.5 and 5% rice bran (P<0.05). Dietary inclusion of rice bran linearly increased serum concentrations of cholesterol and VLDL in broiler chicks (P<0.05). The results of current study showed that dietary inclusion of raw rice bran without any processing in the diet of broiler chickens is not appropriate.

کلیدواژه‌ها [English]

  • Blood serum
  • Chickens
  • diets
  • insoluble fiber
  • internal organs
  1. AACC (2000) American Association of Cereal Chemists, Approved Methods of the AACC (10th ed.). Methods 44-17, 76- 13, 08-16, and 35-05. The Association: St. Paul, MN.
  2. Amerah AM, Ravindran V and Lentle RG (2009) Influence of insoluble fibre and whole wheat inclusion on the performance, digestive tract development and ileal microbiota profile of broiler chickens. British Poultry Science, 50: 366–375.
  3. Bach Knudsen KE (1997) Carbohydrates and lignin contents of plant materials used in animal. Animal Feed Science and Technology, 67: 319–338.
  4. González-Alvarado JM, Jiménez-Moreno E, González-Sánchez D, Lázaro R andMateos GG (2010) Effectof inclusion of oat hulls and sugar beet pulp in the dieton productive performance and digestive traits of broilersfrom 1 to 42 days of age. Animal Feed Science and Technology, 162: 37–46.
  5. González-Alvarado JM, Jiménez-Moreno E, Lázaro R andMateos GG (2007) Effects of type of cereal,heat processing of the cereal, and inclusion of fiber in thediet on productive performance and digestive traits of broilers.Poultry Science, 86: 1705–1715.
  6. Gonzalez-Alvarado JM, Jiménez-Moreno E, Valencia DG, Lázaro R and Mateos GG (2008) Effects of fiber source and heat processing of the cereal on the development and pH of the gastrointestinal tract of broilers fed diets based on corn or rice. Poultry Science, 87: 1779-1795.
  7. Hetland H and Svihus B (2001) Effect of oat hulls on performance, gut capacity and feed passage time in broiler chickens. British Poultry Science, 42: 354-361.
  8. Hetland H, Svihus B and Krogdahl Å (2003) Effects of oat hulls and wood shavings on digestion in broilers and layers fed diets based on whole or ground wheat. British Poultry Science, 44: 275-282.
  9. Iji PA, Saki AA and Tivey DR (2001) Intestinal structure and function of broiler chickens on diets supplemented with a mannan oligosaccharide. Jouranal Science of Food Agric, 81: 1186-1192.
  10. Jiménez-Moreno E, Chamorro S, Frikha M, Safaa HM, Lázaro R and Mateos GG (2011) Effects of increasing levels of pea hulls in the diet on productive performance and digestive traits of broilers from one to eighteen days of age. Animal Feed Science Technology, 168: 100–112.
  11. Jiménez-Moreno E, González-Alvarado JM, Lázaro R and Mateos GG (2009) Effects of type of cereal, heat processing of the cereal, and fiber inclusion in the diet on gizzard pH and nutrient utilization in broilers at different ages. Poultry Science, 88: 1925–1933.
  12. Jørgensen H, Zhao XQ, Bach Knudsen KE and Eggum BO (1996) The influence of dietary fibre source and level on the development of the gastrointestinal tract, digestibility and energy metabolism in broiler chickens. British Journal of Nutrition, 75: 379-395.
  13. Kalmendal R, Elwinger K, Holm L and Tauson R (2011) High-fibre sunflower cake affects small intestinal digestion and health in broiler chickens. British Poultry Science, 52: 86–96.
  14. Khalique A, Khalid PL, Talat NP and Khan AD (2004) Amino acid digestibility of chemically treated and extruder cooked defatted rice polishing. Malaysian Journal of Nutrition, 10: 195-206.
  15. Leeson S and Summers JD (2005) Scott's nutrition of the chicken. International Book Distributing Co. Canada. 591p.
  16. Mateos GG, Jiménez-Moreno E, Serrano MP andLázaro RP (2012) Poultry response to high levels of dietary fiber sources varying in physical and chemical characteristics. Journal of applied Poultry Research, 21: 156–174.
  17. Mohiti-Asli M, Shivazad M, Zaghari M, Aminzadeh S, Rezaian M and Mateos G.G (2012). "Dietary fibers and crude protein content alleviate hepatic fat deposition and obesity in broiler breeder hens". Poultry Science. 91: 3107-3114.
  18. Montagne L, Pluske JR and Hampson DJ (2003) A review of interactions between dietary fiber and the intestinal mucosa, and their consequences on digestive health in young non-ruminant animals. Animal Feed Science and Technology, 108: 95-117.
  19. Mujahid A, Ulhaq I, Asif M and Gillani AH (2004) Effect of different levels of rice bran processed by various techniques on performance of broiler chicks. British Poultry Science, 45: 395-399.
  20. National Research Council (1994) Nutrients requirements of poultry. 9th. Rev. edition. National Academy Press. Washington, DC.
  21. Rezaei M, Karimi torshizi MA, Rouzbehan Y (2011). The influence of different levels of micronized insoluble fiber on broiler performance and litter moisture. Poultry Science, 90:2008-2012.
  22. Sarikhan M, Shahryar HA, Nazer-Adl K, Gholizadeh B and Behesht B (2009) Effects of insoluble fiber on serum biochemical characteristics in broiler. International Journal of Agriculture and Biology, 11: 73-76.
  23. SAS Institute (2001) SAS Users Guide.Version 9.1.  Review edition. SAS Institute Inc. Cary, NC. USA.
  24. Shahin KA and AbdelazimF (2006) Effects of breed, sex and diet and their Interaction on fat deposition and partitioning among depots of broiler chickens. Arch. Tierz. Dummertorf., 49: 181–193.
  25. Shangfun W and Huangchiang B (2001) Dephytinastion of rice bran and manufacturing a new food ingredient. Food Agriculture Science. 81:1411-1425.