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Comparison of Multi-Step Phase-Feeding Programs (Eight or Thirteen Steps) with a Commercial Three-Step Feeding Program for Broiler Chickens | ||
| Poultry Science Journal | ||
| مقاله 2، دوره 8، شماره 1، مرداد 2020، صفحه 9-15 اصل مقاله (1.99 M) | ||
| نوع مقاله: Original Paper | ||
| شناسه دیجیتال (DOI): 10.22069/psj.2020.16997.1491 | ||
| نویسندگان | ||
| HR Taheri* ؛ A Mansouri؛ O Ghaderi | ||
| Department of Animal Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran | ||
| چکیده | ||
| Two trials were conducted to study the effect of multi-steps phase-feeding (PF) program on growth performance of broiler chickens from 1 to 24 and 1 to 39 d of age. The control group was the nutrient recommendation of Aviagen (2019) with a three-step PF program (1-10, 11-24 and 25-39 d of age). In the first trial, the control group was compared with an eight-step PF program (PF8), and in the second trial, it was compared with a thirteen-step PF program (PF13). A gradual increase of metabolizable energy and a decrease of crude protein and amino acids were applied in PF8 and PF13 over time of life. Treatments were replicated in 5 pens of 15 males per each. Feed conversion ratio, lysine intake efficiency and feed cost efficiency were improved (P ≤ 0.05) by the PF8 and PF13. In trial 1 (during 1 to 24 and 1 to 39 d of age) and trial 2 (during 1 to 39 d of age), energy intake efficiency was increased (P ≤ 0.05) by the multi-step PF program. In trial 1 (during 1 to 24 and 1 to 39 d of age) and trial 2 (during 1 to 24 d of age), average daily gain was not improved (P > 0.05) by the multi-step PF program compared to the control group; however, the PF13 increased (P ≤ 0.05) average daily gain during 1 to 39 d of age. In conclusion, the current study shows the eight-step or thirteen-step phase feeding program improves feed conversion ratio compared to the current commercial three-step feeding program. Meanwhile, the thirteen-step phase feeding program increases weight gain from 1 to 39 d of age. | ||
| کلیدواژه‌ها | ||
| Broiler؛ Phase-feeding؛ Feed efficiency | ||
| مراجع | ||
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AOAC (Association of Official Analytical Chemists) International. 1995. Official Methods of Analysis of AOAC International. 16th ed. AOAC Int., Arlington, VA.
Aviagen. 2019. Ross 308 Broiler Nutrition Specifications. Aviagen Ltd., Newbridge, UK.
Brewer VB, Owens CM & Emmert JL. 2012a. Phase feeding in a big-bird production scenario: Effect on growth performance, yield, and fillet dimension. Poultry Science, 91: 1256-1261. DOI: 10.3382/ps.2011-01707
Brewer VB, Owens CM & Emmert JL. 2012b. Phase feeding in a small-bird production scenario: Effect on growth performance, yield, and fillet dimension. Poultry Science, 91: 1262-1268. DOI: 10.3382/ps.2011-01708
Emmert JL & Baker DH. 1997. Use of the ideal protein concept for precision formulation of amino acid levels in broiler diets. Journal of Applied Poultry Research, 6: 462-470. DOI: 10.1093/japr/6.4.462
Hauschild L, Bueno, CFD, Remus A, Gobi, JP, Isola RDG & Sakomura NK. 2015. Multiphase feeding program for broilers can replace traditional system. Scientia Agricola, 72: 210-214. DOI: 10.1590/0103-9016-2014-0207
NRC (National Research Council). 1994. Nutrient Requirement of Poultry. 9th Rev. Ed. National Academy Press. Washington, DC. 176 pages.
Pope T & 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. DOI: 10.1093/ps/80.3.345
Pope T, Loupe LN, Pillai PB & Emmert JL. 2004. Growth performance and nitrogen excretion of broilers using a phase-feeding approach from twenty-one to sixty-three days of age. Poultry Science, 83: 676- 682. DOI: 10.1093/ps/83.4.676
Pope T, Loupe LN, Townsend JA & Emmert JL. 2002. Growth performance of broilers using a phase-feeding approach with diets switched every other day from forty-two to sixty-three days of age. Poultry Science, 81: 466-471. DOI: 10.1093/ps/81.4.466
Roush WB, Boykin D & Branton SL. 2004. Optimization of phase feeding of starter, grower, and finisher diets for male broilers by mixture experimental design: Forty-eight-day production period. Poultry Science, 83: 1264-1275. DOI: 10.1093/ps/83.8.1264
SAS (Statistical Analysis System). 2001. SAS/STAT 8.0 User’s Guide. SAS Institute Inc. Cary, North Carolina.
Surbakti N., Haq A, Carey J & Bailey CA. 2003. Effect of multiphase feeding on broiler performance and nitrogen excretion. Poultry Science, 82(Suppl. 1): 105 (Abstr.).
Warren WA & 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. DOI: 10.1093/ps/79.5.764
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