Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens
ABSTRACT: Two experiments were conducted to investigate the influence of age and dietary cellulose levels on the ileal endogenous energy losses (IEEL) in broiler chickens. In experiment 1, a glucose-based purified diet was used to determine the IEEL. Titanium dioxide (5.0 g/kg) was added to the diet...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Poultry Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0032579122002401 |
| _version_ | 1817971545596755968 |
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| author | M.M. Khalil M.R. Abdollahi F. Zaefarian P.V. Chrystal V. Ravindran |
| author_facet | M.M. Khalil M.R. Abdollahi F. Zaefarian P.V. Chrystal V. Ravindran |
| author_sort | M.M. Khalil |
| collection | DOAJ |
| description | ABSTRACT: Two experiments were conducted to investigate the influence of age and dietary cellulose levels on the ileal endogenous energy losses (IEEL) in broiler chickens. In experiment 1, a glucose-based purified diet was used to determine the IEEL. Titanium dioxide (5.0 g/kg) was added to the diet as an indigestible marker. Six groups of broiler chickens aged 1 to 7, 8 to 14, 15 to 21, 22 to 28, 29 to 35 or 36 to 42 d posthatch, were utilized. With the exception of 1-7 d, the birds were fed a starter (d 1–21) and/or a finisher (d 22–35) diet before the experimental diet was introduced. The diet was randomly allocated to 6 replicate cages, and the number of birds per cage was 12 (d 1–7), 10 (d 8–14), and 8 (d 15–42). The ileal digesta were collected at the last day of each week (d 7, 14, 21, 28, 35, and 42). Bird age had no effect (P > 0.05) on the IEEL estimates. The IEEL estimates ranged from 263 to 316 kcal/kg dry matter intake (DMI) during weeks 1 to 6. In Experiment 2, 4 glucose-based purified diets were developed using 0, 25, 50 and 75 g/kg cellulose. Titanium dioxide (5.0 g/kg) was added to the diets as an indigestible marker. The diets were randomly allocated to 6 replicate cages (8 birds per cage) and fed from 18 to 21 d posthatch and, ileal digesta were collected on d 21. The IEEL estimates of broiler chickens at 21 d of age showed a quadratic response (P < 0.05) to increasing cellulose contents. The lowest IEEL (88 kcal/kg DMI) was recorded for the diet without cellulose and the highest IEEL (430 kcal/kg DMI) was observed for the diet with 75 g/kg cellulose. Overall, the present findings confirmed that the IEEL in broiler chickens can be quantified by feeding a glucose-based purified diet. Broiler age had no influence on the IEEL estimates. The IEEL increased with increasing dietary cellulose contents and the IEEL determined using a purified diet without cellulose represents a better estimate of IEEL. |
| first_indexed | 2024-04-13T20:48:20Z |
| format | Article |
| id | doaj.art-b70bca5d574a491ca370dca3d9360088 |
| institution | Directory Open Access Journal |
| issn | 0032-5791 |
| language | English |
| last_indexed | 2024-04-13T20:48:20Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Poultry Science |
| spelling | doaj.art-b70bca5d574a491ca370dca3d93600882022-12-22T02:30:37ZengElsevierPoultry Science0032-57912022-07-011017101948Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickensM.M. Khalil0M.R. Abdollahi1F. Zaefarian2P.V. Chrystal3V. Ravindran4Monogastric Research Center, School of Agriculture and Environment, Massey University, Palmerston North, 4442, New Zealand; Corresponding author:Monogastric Research Center, School of Agriculture and Environment, Massey University, Palmerston North, 4442, New ZealandMonogastric Research Center, School of Agriculture and Environment, Massey University, Palmerston North, 4442, New ZealandComplete Feed Solutions, Howick 2145, Auckland, New ZealandMonogastric Research Center, School of Agriculture and Environment, Massey University, Palmerston North, 4442, New ZealandABSTRACT: Two experiments were conducted to investigate the influence of age and dietary cellulose levels on the ileal endogenous energy losses (IEEL) in broiler chickens. In experiment 1, a glucose-based purified diet was used to determine the IEEL. Titanium dioxide (5.0 g/kg) was added to the diet as an indigestible marker. Six groups of broiler chickens aged 1 to 7, 8 to 14, 15 to 21, 22 to 28, 29 to 35 or 36 to 42 d posthatch, were utilized. With the exception of 1-7 d, the birds were fed a starter (d 1–21) and/or a finisher (d 22–35) diet before the experimental diet was introduced. The diet was randomly allocated to 6 replicate cages, and the number of birds per cage was 12 (d 1–7), 10 (d 8–14), and 8 (d 15–42). The ileal digesta were collected at the last day of each week (d 7, 14, 21, 28, 35, and 42). Bird age had no effect (P > 0.05) on the IEEL estimates. The IEEL estimates ranged from 263 to 316 kcal/kg dry matter intake (DMI) during weeks 1 to 6. In Experiment 2, 4 glucose-based purified diets were developed using 0, 25, 50 and 75 g/kg cellulose. Titanium dioxide (5.0 g/kg) was added to the diets as an indigestible marker. The diets were randomly allocated to 6 replicate cages (8 birds per cage) and fed from 18 to 21 d posthatch and, ileal digesta were collected on d 21. The IEEL estimates of broiler chickens at 21 d of age showed a quadratic response (P < 0.05) to increasing cellulose contents. The lowest IEEL (88 kcal/kg DMI) was recorded for the diet without cellulose and the highest IEEL (430 kcal/kg DMI) was observed for the diet with 75 g/kg cellulose. Overall, the present findings confirmed that the IEEL in broiler chickens can be quantified by feeding a glucose-based purified diet. Broiler age had no influence on the IEEL estimates. The IEEL increased with increasing dietary cellulose contents and the IEEL determined using a purified diet without cellulose represents a better estimate of IEEL.http://www.sciencedirect.com/science/article/pii/S0032579122002401broileragecelluloseileal endogenous energy loss |
| spellingShingle | M.M. Khalil M.R. Abdollahi F. Zaefarian P.V. Chrystal V. Ravindran Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens Poultry Science broiler age cellulose ileal endogenous energy loss |
| title | Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| title_full | Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| title_fullStr | Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| title_full_unstemmed | Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| title_short | Influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| title_sort | influence of age and dietary cellulose levels on ileal endogenous energy losses in broiler chickens |
| topic | broiler age cellulose ileal endogenous energy loss |
| url | http://www.sciencedirect.com/science/article/pii/S0032579122002401 |
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