Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens

This study was designed to evaluate the effects of dietary supplemental DL-methionine (MET) on live performance and meat yield for broilers raised to a common weight. A total of 1552 one-day old Ross 708, sexed broilers were randomly distributed to 32 pens resulting in eight treatments (TRT) of four...

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Main Authors: Anthony Pokoo-Aikins, Jennifer Rumsey Timmons, Byungrok Rok Min, William Robert Lee, Samuel Njoroge Mwangi, Chongxiao Chen
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/11/10/2839
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author Anthony Pokoo-Aikins
Jennifer Rumsey Timmons
Byungrok Rok Min
William Robert Lee
Samuel Njoroge Mwangi
Chongxiao Chen
author_facet Anthony Pokoo-Aikins
Jennifer Rumsey Timmons
Byungrok Rok Min
William Robert Lee
Samuel Njoroge Mwangi
Chongxiao Chen
author_sort Anthony Pokoo-Aikins
collection DOAJ
description This study was designed to evaluate the effects of dietary supplemental DL-methionine (MET) on live performance and meat yield for broilers raised to a common weight. A total of 1552 one-day old Ross 708, sexed broilers were randomly distributed to 32 pens resulting in eight treatments (TRT) of four replicates with 44 male or 53 female/pen. A randomized complete block with a 2 × 4 (sex × 4 MET levels 0, 0.5, 1, and 2 g/kg) factorial arrangement of TRT was used. A common weight of 2400 g was approached by day 46 (1 and 2 g MET/kg feed) and day 48 (0 and 0.5 g MET/kg feed). Supplementation of MET at 1, and 2 g/kg had a lower (<i>p</i> < 0.01) feed conversion ratio (FCR) at day 46/48 than broilers fed 0.5 g MET/kg. Broilers without supplemental MET had the worst (<i>p</i> < 0.01) feed conversion and average daily gain (ADG) at day 46/48. Birds fed 0 g MET/kg of feed had lower (<i>p</i> < 0.05) whole eviscerated carcass without giblets (WOG), yield than birds fed 2 g MET/kg of feed. Additionally, birds fed 0 g MET/kg of feed had lower (<i>p</i> < 0.05) breast fillet and tender percent yields than birds fed supplemental MET. Elimination of MET from organic broiler diets resulted in reduced ADG, breast fillet yield and feed efficiency of meat yield of broilers raised to day 46/48. Reduction in MET supplementation below current levels reduced the efficiency of meat production of organic broilers raised to day 46/48.
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spelling doaj.art-76f166581df94097ab137a38addcbb462023-11-22T17:09:57ZengMDPI AGAnimals2076-26152021-09-011110283910.3390/ani11102839Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler ChickensAnthony Pokoo-Aikins0Jennifer Rumsey Timmons1Byungrok Rok Min2William Robert Lee3Samuel Njoroge Mwangi4Chongxiao Chen5US National Poultry Research Center, Toxicology & Mycotoxin Research Unit, United States Department of Agriculture, Agricultural Research Services, (USDA, ARS), Athens, GA 30605, USAFood and Agricultural Science Program, Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USAFood and Agricultural Science Program, Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USAMaple Leaf Farms, Leesburg, IN 465384, USADepartment of Agriculture, School of Agriculture and Applied Sciences, Alcorn State University, Lorman, MS 39096, USAPrestage Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC 27695, USAThis study was designed to evaluate the effects of dietary supplemental DL-methionine (MET) on live performance and meat yield for broilers raised to a common weight. A total of 1552 one-day old Ross 708, sexed broilers were randomly distributed to 32 pens resulting in eight treatments (TRT) of four replicates with 44 male or 53 female/pen. A randomized complete block with a 2 × 4 (sex × 4 MET levels 0, 0.5, 1, and 2 g/kg) factorial arrangement of TRT was used. A common weight of 2400 g was approached by day 46 (1 and 2 g MET/kg feed) and day 48 (0 and 0.5 g MET/kg feed). Supplementation of MET at 1, and 2 g/kg had a lower (<i>p</i> < 0.01) feed conversion ratio (FCR) at day 46/48 than broilers fed 0.5 g MET/kg. Broilers without supplemental MET had the worst (<i>p</i> < 0.01) feed conversion and average daily gain (ADG) at day 46/48. Birds fed 0 g MET/kg of feed had lower (<i>p</i> < 0.05) whole eviscerated carcass without giblets (WOG), yield than birds fed 2 g MET/kg of feed. Additionally, birds fed 0 g MET/kg of feed had lower (<i>p</i> < 0.05) breast fillet and tender percent yields than birds fed supplemental MET. Elimination of MET from organic broiler diets resulted in reduced ADG, breast fillet yield and feed efficiency of meat yield of broilers raised to day 46/48. Reduction in MET supplementation below current levels reduced the efficiency of meat production of organic broilers raised to day 46/48.https://www.mdpi.com/2076-2615/11/10/2839DL-methionineamino acidorganic broilersmeat yield
spellingShingle Anthony Pokoo-Aikins
Jennifer Rumsey Timmons
Byungrok Rok Min
William Robert Lee
Samuel Njoroge Mwangi
Chongxiao Chen
Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
Animals
DL-methionine
amino acid
organic broilers
meat yield
title Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
title_full Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
title_fullStr Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
title_full_unstemmed Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
title_short Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens
title_sort effects of feeding varying levels of dl methionine on live performance and yield of broiler chickens
topic DL-methionine
amino acid
organic broilers
meat yield
url https://www.mdpi.com/2076-2615/11/10/2839
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