Asian-Australasian Journal of Animal Sciences

  • 제19권7호
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  • Pages.1026-1032
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  • 2006
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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The Relative Effectiveness of Liquid Methionine Hydroxy Analogue Compared to DL-methionine in Broilers

  • Yao, J.H. (College of Animal Science and Technology, Northwest A & F University) ;
  • Li, S.Q. (College of Animal Science and Technology, Northwest A & F University) ;
  • Zhong, L.L. (College of Animal Science and Technology, Northwest A & F University) ;
  • Huang, S.X. (Degussa Pacific Company, Shanghai Representative Office) ;
  • Zhang, W.J. (Degussa Pacific Company, Shanghai Representative Office) ;
  • Xi, H.B. (College of Animal Science and Technology, Northwest A & F University)
  • 투고 : 2005.09.05
  • 심사 : 2006.03.06
  • 발행 : 2006.07.01
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초록

The present experiment was conducted to assess the efficacy of liquid methionine hydroxy analogue-free acid (MHA-FA) in comparison to DL-methionine (DL-Met) in broilers. 567 day-old Avian chicks were divided into 7 treatments with 5 replicates of 16 birds each. During the 35d (7-42 d) experimental periods chicks were given two basal diets. From 7 to 21d of age, a starting basal diet containing 19.5% protein and 0.33% methionine was supplemented with two graded levels of DL-Met (0.070 and 0.160%) or four levels of MHA-FA (0.118, 0.143, 0.221 and 0.268%). From 22 to 42d of age DL-Met (0.050 and 0.080%) or MHA-FA (0.071, 0.074, 0.112 and 0.140%) were added to a finishing basal diet with 18.0% protein and 0.28% methionine. Chicks fed on supplemental DL-Met or MHA-FA had significantly higher (p<0.05) body weight gain and feed conversion ratio (FCR) than the control group from 7-21d of age. During the finishing phase (22-42 d), body weight and weight gain of chicks in DL-Met or MHA-FA treatments were similar to those in the control, but FCR was improved (p<0.05) with supplementation of DL-Met or MHA-FA. Breast yield was higher (p<0.05) on DL-Met or MHA-FA supplemented than un-supplemented diets. The thigh meat yields emanating from diets with DL-Met or MHA-FA were lower (p<0.05) than that in control. Abdominal fat was also higher in broilers fed the control diet than in DL-Met or MHA-FA supplemented treatments. Methionine requirement of broilers was calculated to be 0.44 and 0.35% and cystine requirement was 0.35 and 0.31% for the starting (7-21 d) and finishing phase (22-42 d), respectively. The efficacy of MHA-FA in comparison to DL-Met for weight gain was 64 and 85% and for FCR was 55 and 60% at 7-21 and 22-42 d of age, respectively, while it was 74, 72, 52 and 48% for breast yield, thigh meat production, body energy content and energy deposition ratio at 42 d of age, respectively. In conclusion, in practical diet formulation for broiler chicks the average bioavailability of MHA-FA relative to DL-Met could be considered as 60 and 73% for 7 to 21d and 22 to 42 d of age, respectively.

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피인용 문헌

  1. Nutritional Factors Affecting Abdominal Fat Deposition in Poultry: A Review vol.27, pp.7, 2014, https://doi.org/10.5713/ajas.2013.13702
  2. Assessment of Meat Quality and Shelf Life from Broilers Fed with Different Sources and Concentrations of Methionine vol.2019, pp.1745-4557, 2019, https://doi.org/10.1155/2019/6182580