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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MDPI AG
2021-09-01
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| Series: | Animals |
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| 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. |
| first_indexed | 2024-03-10T06:47:20Z |
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| language | English |
| last_indexed | 2024-03-10T06:47:20Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| 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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