Progress in ileal endogenous amino acid flow research in poultry
Abstract The progress in our understanding of the endogenous protein concept over the past century is reviewed. Non-dietary proteins found in the digesta at the terminal ileum of poultry, known as endogenous protein loss, are comprised of digestive secretions, mucus and sloughed gut epithelial cells...
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| Format: | Article |
| Language: | English |
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BMC
2021-01-01
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| Series: | Journal of Animal Science and Biotechnology |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s40104-020-00526-2 |
| _version_ | 1818411111371767808 |
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| author | V. Ravindran |
| author_facet | V. Ravindran |
| author_sort | V. Ravindran |
| collection | DOAJ |
| description | Abstract The progress in our understanding of the endogenous protein concept over the past century is reviewed. Non-dietary proteins found in the digesta at the terminal ileum of poultry, known as endogenous protein loss, are comprised of digestive secretions, mucus and sloughed gut epithelial cells. The measurement of this loss is of fundamental importance because it is an indicator of gut metabolism and is essential to adjust apparent estimates of ileal amino acid digestibility. The ileal endogenous amino acid losses comprise of two components, namely basal and specific losses. The basal losses are fixed and associated with feed dry matter intake, whereas the specific losses are variable and induced by the presence of dietary components such as fibre and anti-nutrients. Currently there is no methodology available to directly measure the specific endogenous losses and these losses are calculated by determining the basal and total (basal plus specific) losses and, then subtracting the basal losses from total losses. The seminal features, specific applications and shortcomings of available methodologies are briefly outlined as well as the practical challenges faced in using the published endogenous amino acid loss values for true digestibility corrections. The relevance of taurine as a component of endogenous protein flow in poultry is identified for the first time. |
| first_indexed | 2024-12-14T10:26:13Z |
| format | Article |
| id | doaj.art-728b083221a540eba00c22d4ac843d9f |
| institution | Directory Open Access Journal |
| issn | 2049-1891 |
| language | English |
| last_indexed | 2024-12-14T10:26:13Z |
| publishDate | 2021-01-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Animal Science and Biotechnology |
| spelling | doaj.art-728b083221a540eba00c22d4ac843d9f2022-12-21T23:06:18ZengBMCJournal of Animal Science and Biotechnology2049-18912021-01-0112111110.1186/s40104-020-00526-2Progress in ileal endogenous amino acid flow research in poultryV. Ravindran0Monogastric Research Centre, School of Agriculture and Environment, Massey UniversityAbstract The progress in our understanding of the endogenous protein concept over the past century is reviewed. Non-dietary proteins found in the digesta at the terminal ileum of poultry, known as endogenous protein loss, are comprised of digestive secretions, mucus and sloughed gut epithelial cells. The measurement of this loss is of fundamental importance because it is an indicator of gut metabolism and is essential to adjust apparent estimates of ileal amino acid digestibility. The ileal endogenous amino acid losses comprise of two components, namely basal and specific losses. The basal losses are fixed and associated with feed dry matter intake, whereas the specific losses are variable and induced by the presence of dietary components such as fibre and anti-nutrients. Currently there is no methodology available to directly measure the specific endogenous losses and these losses are calculated by determining the basal and total (basal plus specific) losses and, then subtracting the basal losses from total losses. The seminal features, specific applications and shortcomings of available methodologies are briefly outlined as well as the practical challenges faced in using the published endogenous amino acid loss values for true digestibility corrections. The relevance of taurine as a component of endogenous protein flow in poultry is identified for the first time.https://doi.org/10.1186/s40104-020-00526-2Basal lossDigestible amino acidsEndogenous amino acid lossesPoultrySpecific loss |
| spellingShingle | V. Ravindran Progress in ileal endogenous amino acid flow research in poultry Journal of Animal Science and Biotechnology Basal loss Digestible amino acids Endogenous amino acid losses Poultry Specific loss |
| title | Progress in ileal endogenous amino acid flow research in poultry |
| title_full | Progress in ileal endogenous amino acid flow research in poultry |
| title_fullStr | Progress in ileal endogenous amino acid flow research in poultry |
| title_full_unstemmed | Progress in ileal endogenous amino acid flow research in poultry |
| title_short | Progress in ileal endogenous amino acid flow research in poultry |
| title_sort | progress in ileal endogenous amino acid flow research in poultry |
| topic | Basal loss Digestible amino acids Endogenous amino acid losses Poultry Specific loss |
| url | https://doi.org/10.1186/s40104-020-00526-2 |
| work_keys_str_mv | AT vravindran progressinilealendogenousaminoacidflowresearchinpoultry |