Growth, meat yield, and economic responses of broilers provided three- and four-phase schedules formulated to moderate and high nutrient density during a fifty-six-day production period

Journal of Applied Poultry Research

Volumn 15, Issue 2, 2006, Pages 312-325

  Dozier III, W A ^a   Gordon, R W ^b   Anderson, J ^c   Kidd, M T ^c   Corzo, A ^c   Branton, S L ^a  

^a POULTRY RESEARCH UNIT   (United States)

^b Gold Kist Inc   (United States)

^c MISSISSIPPI STATE UNIVERSITY   (United States)

Author keywords

Broiler; Feeding schedule; Lysine; Methionine; Nutrient density

Indexed keywords

AVES;

EID: 33745660315     PISSN: 10566171     EISSN: None     Source Type: Journal    
DOI: 10.1093/japr/15.2.312     Document Type: Article

References (27)

1. Gordon, R. 2005. Gold Kist Inc., Atlanta, GA. Personal communication.
2. National Research Council. 1994. 9th ed. Natl. Acad. Press, Washington, DC.
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4. Dozier, W. A., III, and E. T. Moran Jr. 2001. Response of early- and late-developing broilers to nutritionally adequate and restrictive feeding schedules during the summer. J. Appl. Poult. Res. 10:92-98.
5. Kidd, M. T., C. D. Mcdaniel, S. L. Branton, E. R. Miller, B. B. Boren, and B. I. Fancher. 2004. Increasing amino acid density improves live performance and carcass yields of commercial broilers. J. Appl. Poult. Res. 13:593-604.
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8. Aviagen Inc., Huntsville, AL.
9. A continuous lighting schedule consisting of 23 h of light with an intensity of 20 lx was implemented from placement until 7 d of age, 16 h of light with an intensity of 5 lx from 8 to 28 d, and 24 h of light with an intensity of 5 lx from 29 to 56 d of age.
10. Temperature set points consisted of 34°C from placement to 4 d, 32°C from 5 to 9 d, 29°C from 10 to 14 d, 28°C from 15 to 19 d, 27°C from 20 to 24 d, 26°C from 25 to 29 d, 24°C from 30 to 34 d, 22°C from 35 to 39 d, 21°C from 40 to 43 d, and 19°C from 44 to 56 d.
11. Diet costs during the starter period formulated to a moderate and high nutrient density were $0.218 and $0.227/kg, respectively, and $0.203 and $0.213/kg for the moderate and high nutrient density diets, respectively, during the grower period. The costs of the withdrawal (WD) diets (36 to 56 d) of the 3-phase schedule formulated to moderate and high nutrient density were $0.187 and $0.195/kg. respectively. Costs of the WD1 diets (36 to 47 d) formulated to moderate and high nutrient density were $0.192 and $0.199/kg, respectively; and WD2 diets (47 to 56 d) formulated to moderate and high nutrient density for the 4-phase schedule were $0.182 and $0.189/kg, respectively.
12. The carcass price was $1.32/kg, and prices used for pectoralis major and pectoralis minor were $3.31 and $3.97/kg, respectively.
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