بررسی تأثیر الگوهای مختلف تغذیه پروتئین بر عملکرد رشد و اجزای لاشه جوجه‌های گوشتی سویه تجاری کاب

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد گروه تغذیه دام و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان، ایران

2 دانشجوی دکتری تخصصی گروه تغذیه دام و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان، ایران

3 دانشیار گروه تغذیه دام و طیور، دانشکده علوم دامی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان، گلستان، ایران

4 استادیار بخش تحقیقات علوم دامی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان گلستان، گرگان - ایران

چکیده

 اثر الگو­های مختلف تغذیه پروتئین، برعملکرد رشد، اجزای لاشه و محتوای نیتروژن بستر جوجه­هـای گوشـتی سـویه­ی تجـاری کاب 500 با استفاده از 800 جوجه در قالب طرح کاملاً تصادفی با چهار تیمار، پنج تکرار و 40 پرنده در هر تکرار بررسی شد. تیمار­های آزمایشی شامل چهار الگوی تغذیه پروتئین (بر اساس راهنمای پرورش سویه کاب، احتیاجات توصیه شده توسط NRC، 90 درصد مقدار پروتئین توصیه شـده NRC و الگوی تغذیه مرحلـه­ای) بود. اثر تیمار­های مختلف بر افزایش وزن، مصرف خوراک، انرژی مصرفی، نسبت راندمان پروتئین و اجزای لاشه معنی­دار نبود. پرندگانی که بر اساس الگوی توصیه شده راهنمای کاب تغذیه شدند ضریب تبدیل غذایی بهتری داشتند (05/0P<). نسبت راندمان انرژی در جوجه­‌های گوشتی تغذیه شده با الگوی پروتئینی راهنمای سویه کاب از سایر تیمار­ها بیشتر بود (05/0P<). مقدار نیتروژن بستر با تغذیه جوجه­های گوشتی براساس راهنمای سویه کاب، 90 درصد مقدار پروتئین توصیه شـده NRC  و خوراک­دهی مرحله­ای نسبت به الگوی پروتئینی توصیه شده NRC  کمتر بود (05/0P<). بر اساس نتایج این آزمایش، استفاده از الگوی تغذیه پروتئین بر اساس راهنمای سویه کاب برای تغذیه جوجه­های گوشتی سویه کاب مناسب­تر از سایر الگو­های مورد مطالعه می­باشد.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of different amounts of dietary protein on growth performance and carcass components of Cobb strain broilers

نویسندگان [English]

  • Behrouz Dastar 1
  • mohsen rajabzadeh nesvan 2
  • Mahmoud Shams Shargh 3
  • Mokhtar Mohajer 4
1 Professor,Department of Animal and Poultry Science, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan , Iran
2 Ph.D. Student, Department of Animal and Poultry Science, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan , Iran
3 Associate Professor, Department of Animal and Poultry Science, Faculty of Animal Science, Gorgan University of Agricultural Sciences and Natural Resources, Golestan , Iran
4 Assistant Professor, Agricultural and Natural Resources and Education Center of Golestan Province, Gorgan - Iran
چکیده [English]

The effect of feeding different protein profiles on growth performance, carcass components and nitrogen content of litter in Cobb 500 broiler strain was evaluated using 800 chicks in a completely randomized design with four treatments, five replicates groups of 40 birds per each treatment. The treatments were consisted of four protein feeding profiles (based on Cobb strain nutrition guide, recommendation by NRC, 90% protein recommended by NRC and phase feeding). The effect of different treatments on body weight gain, feed intake, energy consumption, protein efficiency ratio and carcass components were not significant. The birds were fed based on Cobb strain guide had a better feed conversion ratio (P< 0.05). Energy efficiency ratio in broilers fed base on protein profile of Cobb strain guide was higher than other treatments (P< 0.05). The amount of litter nitrogen in broilers fed with base on Cobb strain guide, 90% protein recommended by NRC and phase feeding were lower than those fed base on protein profile of NRC recommendation (P< 0.05). Based on the results of this experiment, the use of protein profile base on Cobb strain is more suitable for feeding Cobb broiler chickens than other profiles.

کلیدواژه‌ها [English]

  • Amino acid
  • broiler
  • Cobb strain
  • Protein
  • phase feeding
1 . Ajuyah AO, Lee K.H, Hardin RT and Sim JS (1991) Changes in the yield and in fed full-fat oil seeds. Poultry Science. 70: 2304- 2314.
2 . AOAC (1994) Association of official analytical chemists. Official Methods of Analysis. Methods of Analysis. 16th ed. AOAC, Washington, DC.
3 . Baker DH (1997) Ideal amino acid profiles for swine and poultry and their application in feed formulation. in: Biokyowa Technical Review. Biokyowa Press, St. Louis, MO. No. 9.  pp. 1–24.
4 . Brewer VB, Owen CM and Emmert JL (2012) Phase feeding in a small-bird production scenario: Effect on growth performance, yield, and fillet dimension. Poultry Science. 91:1262–1268.
5 . Burgess RP, Carey JB and Shafer DJ (1998) The impact of pH on nitrogen retention in laboratory analysis of broiler litter. Poultry Science. 77: 1620–1622.
6 . Cobb-Vantress (2012) Cobb 500: Broiler performance and nutrition supplement guide. Cobb -Vantress, Siloam Springs. AR.
7 . Emmert JL and Baker DH (1997) Use of the ideal protein concept for precision formulation of amino acid levels in broiler diets. Journal Applied Poultry Research. 6: 462–470.
8 . Hauschild L, Ferreira C, Bueno D, Remus A, Gobi J, Isola P and Sakomura NK (2014) Multiphase feeding program for broilers can replace traditional system. Science Agriculture. 72: 210-214.
9 . Hussein AS, Cantor AH, Pescatore AJ, Gate RS, Burnham D, Ford MJ and Paton ND (2001) Effect of low protein diets with amino acids supplementation on broiler growth. Journal Applied Poultry Research. 10: 354-362.
10 . Lipstein BS and Bornstein S (1975) The replacement of some of the soybean meal by the first limiting amino acids in practical broiler diets. 2. Special additions of methionine and lysine as partial substitutes for protein in finisher diets. British Poultry Science. 16: 189-200.
11 . Loup LN and Emmert JL (2000) Growth performance of broiler chicks during the starter and grower phases in phase feeding. Discovery. 1: 20-25.
12 . National Research Council (1994) Nutrient Requirements of Poultry. 9th rev. ed. National Academy Press, Washington, DC.
13 . Nudiens J (2002) Opportunities of genetic potential of cross hybro-G broiler chicks using differently enriched feed. Veterinarija Ir Zootechnika. 19: 82-86.
14 . Ojano-Dirain CP and Waldroup PW (2002) Protein and amino acid needs of broilers in warm weather: A review. International Journal Poultry Science. 1: 40-46.
15 . Perreault N and Leeson S (1992) Age-related carcass composition changes in male broiler chickens. Canadian Journal Animal Science. 72: 919-929.
16 . Pope T and Emmert JL (2001) Phase-feeding supports maximum growth performance of broiler chicks from forty-three to seventy-one days of age. Poultry Science. 80: 345–352.
17 . Pope T and Emmert JL (2002) Impact of phase-feeding on the growth performance of broilers subjected to high environmental temperatures. Poultry Science. 81: 504–511.
18 . Statistical Analysis Systems (1998) SAS User’s Guide, Version 6.1, SAS Institute Inc. Carry, NC.
19 . Sterling KG, Costa EF, Henry MH, Pesti GM and Bakalli RI (2002) Responses of broiler chickens to cottonseed and soybean meal-based diets at several protein levels. Poultry Science. 81: 217-226.
20 . Summers JD (1993) Reducing Nitrogen Excretion of the Laying Hen by Feeding Lower Crude Protein Diets. Poultry Science. 72: 1473-1478.
21 . Summers JD, Spratt D and Atkinson JL (1992) Broiler weight gain and carcass composition when fed diets varying in amino acid balance, dietary energy and protein level. Journal Poultry Science. 71: 263-273.
22 . Waldroup PW, Mitchell RJ, Payne JR and Hazen KR (1976) Performance of chicks fed diets formulated to minimize excess levels of essential amino acids. Poultry Science. 55: 243-253.
23 . Warren WA and Emmert JL (2000) Efficacy of phase-feeding in supporting growth performance of broiler chicks during the starter and finisher phases. Poultry Science. 79: 764–770.
24 . Watkins SE, Waldroup AL and Waldroup PW (1993) Effect of dietary amino acid level and time of change from starter to grower diets on performance of broilers grown to 45 days of age. Poultry Science. 72(Suppl. 1):197. (Abst.).
25 . Yamazaki M, Murakami H and Takemasa M (1996) Reproduction of nitrogen excreted from broiler chicks by feeding low protein, amino acid-supplemented diets. Japanese Poultry Science. 33: 249- 255.