Evaluation of energy and amino acids of brown rice and its effects on laying performance and egg quality of layers
Two experiments were conducted to determine apparent metabolizable energy (AME), nitrogen-corrected AME (AMEn), and ileal digestible amino acid (AA) content of brown rice (BR) and to investigate the effect of dietary supplementation of BR o...
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| Format: | Article |
| Language: | English |
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Korean Society of Animal Sciences and Technology
2020-05-01
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| Series: | Journal of Animal Science and Technology |
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| Online Access: | http://www.ejast.org/archive/view_article?pid=jast-62-3-374 |
| _version_ | 1818454239489294336 |
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| author | Byoung-Ki An Su Hyun An Han-Seul Jeong Kwan-Eung Kim Eun Jip Kim Sang-Rak Lee Changsu Kong |
| author_facet | Byoung-Ki An Su Hyun An Han-Seul Jeong Kwan-Eung Kim Eun Jip Kim Sang-Rak Lee Changsu Kong |
| author_sort | Byoung-Ki An |
| collection | DOAJ |
| description | Two experiments were conducted to determine apparent metabolizable energy (AME),
nitrogen-corrected AME (AMEn), and ileal digestible amino acid (AA) content of
brown rice (BR) and to investigate the effect of dietary supplementation of BR
on laying performance and egg quality of laying hens. In Exp. 1, 72 Hy-line
Brown layers (49-week-old) were allocated to two treatments using a completely
randomized block design, and each treatment included six cages per treatment and
six hens per cage. A semi-purified diet was formulated to include BR as the sole
source of AA and energy and an N-free diet was used to determine basal
endogenous loss of AA. The hens were fed a commercial layer diet for adaptation
to the experimental environment and diet for 7 days from d 0, and then fed
experimental diets for 5 days from d 7. Excreta were collected from d 10 to 11
and ileal digesta were collected on d 12. On a dry matter (DM) basis, the AME
and AMEn of BR was determined at 3,773 and 3,729 kcal/kg, respectively. The
apparent ileal digestibility (AID) of BR ranged from 32.7% for Thr to 73.7% for
Arg. The range of the standardized ileal digestibility (SID) value was between
79.4% for Met and 96.6% for Lys. In Exp. 2, 252 Hy-line Brown layers
(44-week-old) were divided into four groups, comprising seven replicates of nine
birds each and assigned to four experimental diets containing 0 (Control), 5%,
10%, or 15% BR for 5 weeks. The BR-containing diets were formulated to be equal
in the content of AMEn and digestible AA to those of the diet without BR. No
significant differences were observed in laying performances. Egg quality and
blood profiles were not linearly or quadratically affected by dietary
treatments. These results suggest that up to 15% BR can be included into layer
feed without any adverse effects on laying performance and egg quality, if its
energy and digestible AA values are well evaluated. |
| first_indexed | 2024-12-14T21:51:43Z |
| format | Article |
| id | doaj.art-c634612aa28a493d8d19e8a1aed45b84 |
| institution | Directory Open Access Journal |
| issn | 2672-0191 2055-0391 |
| language | English |
| last_indexed | 2024-12-14T21:51:43Z |
| publishDate | 2020-05-01 |
| publisher | Korean Society of Animal Sciences and Technology |
| record_format | Article |
| series | Journal of Animal Science and Technology |
| spelling | doaj.art-c634612aa28a493d8d19e8a1aed45b842022-12-21T22:46:14ZengKorean Society of Animal Sciences and TechnologyJournal of Animal Science and Technology2672-01912055-03912020-05-0162337438410.5187/jast.2020.62.3.374jast-62-3-374Evaluation of energy and amino acids of brown rice and its effects on laying performance and egg quality of layersByoung-Ki An0Su Hyun An1Han-Seul Jeong2Kwan-Eung Kim3Eun Jip Kim4Sang-Rak Lee5Changsu Kong6Department of Animal Science and Technology, Konkuk University, Department of Animal Science and Biotechnology, Kyungpook National University, Department of Animal Science and Technology, Konkuk University, R&D Center, Nonghyup Feed, Division of Animal Husbandry, Yonam College, Department of Animal Science and Technology, Konkuk University, Department of Animal Science and Biotechnology, Kyungpook National University, Two experiments were conducted to determine apparent metabolizable energy (AME), nitrogen-corrected AME (AMEn), and ileal digestible amino acid (AA) content of brown rice (BR) and to investigate the effect of dietary supplementation of BR on laying performance and egg quality of laying hens. In Exp. 1, 72 Hy-line Brown layers (49-week-old) were allocated to two treatments using a completely randomized block design, and each treatment included six cages per treatment and six hens per cage. A semi-purified diet was formulated to include BR as the sole source of AA and energy and an N-free diet was used to determine basal endogenous loss of AA. The hens were fed a commercial layer diet for adaptation to the experimental environment and diet for 7 days from d 0, and then fed experimental diets for 5 days from d 7. Excreta were collected from d 10 to 11 and ileal digesta were collected on d 12. On a dry matter (DM) basis, the AME and AMEn of BR was determined at 3,773 and 3,729 kcal/kg, respectively. The apparent ileal digestibility (AID) of BR ranged from 32.7% for Thr to 73.7% for Arg. The range of the standardized ileal digestibility (SID) value was between 79.4% for Met and 96.6% for Lys. In Exp. 2, 252 Hy-line Brown layers (44-week-old) were divided into four groups, comprising seven replicates of nine birds each and assigned to four experimental diets containing 0 (Control), 5%, 10%, or 15% BR for 5 weeks. The BR-containing diets were formulated to be equal in the content of AMEn and digestible AA to those of the diet without BR. No significant differences were observed in laying performances. Egg quality and blood profiles were not linearly or quadratically affected by dietary treatments. These results suggest that up to 15% BR can be included into layer feed without any adverse effects on laying performance and egg quality, if its energy and digestible AA values are well evaluated.http://www.ejast.org/archive/view_article?pid=jast-62-3-374brown riceapparent metabolizable energystandardized ileal digestible amino acidsegg productionlaying hens |
| spellingShingle | Byoung-Ki An Su Hyun An Han-Seul Jeong Kwan-Eung Kim Eun Jip Kim Sang-Rak Lee Changsu Kong Evaluation of energy and amino acids of brown rice and its effects on laying performance and egg quality of layers Journal of Animal Science and Technology brown rice apparent metabolizable energy standardized ileal digestible amino acids egg production laying hens |
| title | Evaluation of energy and amino acids of brown rice and its effects on
laying performance and egg quality of layers |
| title_full | Evaluation of energy and amino acids of brown rice and its effects on
laying performance and egg quality of layers |
| title_fullStr | Evaluation of energy and amino acids of brown rice and its effects on
laying performance and egg quality of layers |
| title_full_unstemmed | Evaluation of energy and amino acids of brown rice and its effects on
laying performance and egg quality of layers |
| title_short | Evaluation of energy and amino acids of brown rice and its effects on
laying performance and egg quality of layers |
| title_sort | evaluation of energy and amino acids of brown rice and its effects on laying performance and egg quality of layers |
| topic | brown rice apparent metabolizable energy standardized ileal digestible amino acids egg production laying hens |
| url | http://www.ejast.org/archive/view_article?pid=jast-62-3-374 |
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