Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate
A study was conducted to investigate the effects of feeding low-protein diets fortified with individual non-essential amino acids (NEAA) on growth performance, serum metabolites (uric acid, UA; triglycerides, TG; total protein, TP; and albumin, Alb), organ weight, breast yield, and abdominal fat wei...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Poultry Science Association
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/14130/ http://psasir.upm.edu.my/id/eprint/14130/1/Individual%20non-essential%20amino%20acids%20fortification%20of%20a%20low-protein%20diet%20for%20broilers%20under%20the%20hot%20and%20humid%20tropical%20climate.pdf |
| _version_ | 1848842308641882112 |
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| author | Mohamed, Elmutaz Atta Awad Idrus, Zulkifli Farjam, Abdoreza Soleimani Loh, Teck Chwen |
| author_facet | Mohamed, Elmutaz Atta Awad Idrus, Zulkifli Farjam, Abdoreza Soleimani Loh, Teck Chwen |
| author_sort | Mohamed, Elmutaz Atta Awad |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A study was conducted to investigate the effects of feeding low-protein diets fortified with individual non-essential amino acids (NEAA) on growth performance, serum metabolites (uric acid, UA; triglycerides, TG; total protein, TP; and albumin, Alb), organ weight, breast yield, and abdominal fat weight in broiler chicks raised under the hot and humid tropical climate. Eight isocaloric (3,017 kcal/kg) experimental diets were formulated and fed to male broiler chicks from d 1–21 as follows: 1) 22.2% crude protein (CP) (positive control; PC); 2) 16.2% CP + mixture essential amino acids (EAA) to meet or exceed the National Research Council (1994) recommendations (negative control; NC); 3) NC + glycine (Gly) to equal the total glycine + serine level in the PC; diets 4 through 7 were obtained by supplementing NC diet with individual glutamic acid, proline, alanine, or aspartic acid (Glu, Pro, Ala, or Asp, respectively); 8) NC + NEAA (Gly + Glu + Pro + Ala + Asp) to equal the total level of these NEAA in the PC. Fortifying NC diet with mixture NEAA resulted in a similar growth performance as PC. However, fortification of low-CP diet with individual NEAA failed to improve body weight (BW) (P < 0.0001), feed intake (FI) (P = 0.0001), and feed conversion ratio (FCR) (P = 0.0001). Serum uric acid (UA) was lower (P = 0.0356) in NC birds and NC diet supplemented with individual NEAA birds, whereas serum triglyceride (TG) (P = 0.007) and relative weight of abdominal fat (P = 0.001) were higher in these birds. In conclusion, no single NEAA fortification may compensate the depressed growth performance attributed to a low-CP diet. However, fortification with Gly may improve FCR. There is a possibility that broilers raised under the hot and humid climate require higher Gly fortification than the level used in this study. |
| first_indexed | 2025-11-15T07:57:04Z |
| format | Article |
| id | upm-14130 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:57:04Z |
| publishDate | 2015 |
| publisher | Poultry Science Association |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-141302018-09-04T08:11:31Z http://psasir.upm.edu.my/id/eprint/14130/ Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate Mohamed, Elmutaz Atta Awad Idrus, Zulkifli Farjam, Abdoreza Soleimani Loh, Teck Chwen A study was conducted to investigate the effects of feeding low-protein diets fortified with individual non-essential amino acids (NEAA) on growth performance, serum metabolites (uric acid, UA; triglycerides, TG; total protein, TP; and albumin, Alb), organ weight, breast yield, and abdominal fat weight in broiler chicks raised under the hot and humid tropical climate. Eight isocaloric (3,017 kcal/kg) experimental diets were formulated and fed to male broiler chicks from d 1–21 as follows: 1) 22.2% crude protein (CP) (positive control; PC); 2) 16.2% CP + mixture essential amino acids (EAA) to meet or exceed the National Research Council (1994) recommendations (negative control; NC); 3) NC + glycine (Gly) to equal the total glycine + serine level in the PC; diets 4 through 7 were obtained by supplementing NC diet with individual glutamic acid, proline, alanine, or aspartic acid (Glu, Pro, Ala, or Asp, respectively); 8) NC + NEAA (Gly + Glu + Pro + Ala + Asp) to equal the total level of these NEAA in the PC. Fortifying NC diet with mixture NEAA resulted in a similar growth performance as PC. However, fortification of low-CP diet with individual NEAA failed to improve body weight (BW) (P < 0.0001), feed intake (FI) (P = 0.0001), and feed conversion ratio (FCR) (P = 0.0001). Serum uric acid (UA) was lower (P = 0.0356) in NC birds and NC diet supplemented with individual NEAA birds, whereas serum triglyceride (TG) (P = 0.007) and relative weight of abdominal fat (P = 0.001) were higher in these birds. In conclusion, no single NEAA fortification may compensate the depressed growth performance attributed to a low-CP diet. However, fortification with Gly may improve FCR. There is a possibility that broilers raised under the hot and humid climate require higher Gly fortification than the level used in this study. Poultry Science Association 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/14130/1/Individual%20non-essential%20amino%20acids%20fortification%20of%20a%20low-protein%20diet%20for%20broilers%20under%20the%20hot%20and%20humid%20tropical%20climate.pdf Mohamed, Elmutaz Atta Awad and Idrus, Zulkifli and Farjam, Abdoreza Soleimani and Loh, Teck Chwen (2015) Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate. Poultry Science, 94 (11). pp. 2772-2777. ISSN 0032-5791; ESSN: 1525-3171 https://academic.oup.com/ps/article/94/11/2772/2453318 10.3382/ps/pev258 |
| spellingShingle | Mohamed, Elmutaz Atta Awad Idrus, Zulkifli Farjam, Abdoreza Soleimani Loh, Teck Chwen Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title | Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title_full | Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title_fullStr | Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title_full_unstemmed | Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title_short | Individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| title_sort | individual non-essential amino acids fortification of a low-protein diet for broilers under the hot and humid tropical climate |
| url | http://psasir.upm.edu.my/id/eprint/14130/ http://psasir.upm.edu.my/id/eprint/14130/ http://psasir.upm.edu.my/id/eprint/14130/ http://psasir.upm.edu.my/id/eprint/14130/1/Individual%20non-essential%20amino%20acids%20fortification%20of%20a%20low-protein%20diet%20for%20broilers%20under%20the%20hot%20and%20humid%20tropical%20climate.pdf |