Effects of reduced digestible lysine density on myopathies of the Pectoralis major muscles in broiler chickens at 48 and 62 days of age

Poultry Science
K J MelocheW A Dozier

Abstract

Quantitative control of nutrient intake may decrease the incidence of wooden breast (WB) and white striping (WS) myopathies with some impairment of live performance. Two experiments (Exp) utilizing Yield Plus × Ross 708 male broilers were conducted to determine if a reduction in myopathies may be obtained through a qualitative approach by reducing digestible lysine (dLys) density. All birds received an identical starter diet until 11 d of age. In Exp 1 (63 pens; 22 birds/pen), each pen was then randomly assigned to 1 of the following 7 dietary treatments (TRT) for a 47 d production period. Seven dietary treatments were provided for the grower 1 (G1; 12 to 18 d of age) and grower 2 (G2; 19 to 26 d of age) phases: 1) 100% of primary breeder recommendations for dLys throughout Exp; 2) 85% of TRT 1 dLys for G1; 3) 85% of TRT 1 dLys for G2; 4) 85% of TRT 1 dLys for G1 and G2; 5) 75% of TRT 1 dLys for G1; 6) 75% of TRT 1 dLys for G2; 7) 75% of TRT 1 for G1 and G2. In Exp 2 (24 pens; 30 birds/pen), birds were randomly assigned to 1 of the following 4 dietary TRT (Table 2) during a 61 d production period. Four dietary treatments were provided for the grower (G; 12 to 28 d) and finisher 1 (F1; 29 to 40 d of age) phases: 1) 100% of prima...Continue Reading

References

Mar 24, 2006·Poultry Science·A CorzoM T Kidd
Sep 21, 2010·Poultry Science·W A DozierS L Branton
Jan 10, 2013·Poultry Science·V A KuttappanC M Owens
Oct 18, 2015·Poultry Science·Richard A BaileySantiago Avendano

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Citations

Nov 28, 2018·Korean Journal for Food Science of Animal Resources·Xi Huang, Dong Uk Ahn
Jun 22, 2019·Poultry Science·Jeffrey R Tonniges, Sandra G Velleman
Sep 26, 2020·Frontiers in Physiology·Richard A BaileySantiago Avendano
Jun 3, 2021·Animals : an Open Access Journal From MDPI·Francesca SogliaFederico Sirri

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