Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge
This experiment was conducted to evaluate the effect of coccidial control, dietary mineral density, and coccidial challenge on broiler chick performance. Commercial broiler chicks (1008) were placed across 48 floor pens (21 birds/pen, 6 replications/treatment) on either fresh or seeded bedding. Tr...
| المؤلفون الرئيسيون: | , , |
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| التنسيق: | مقال |
| اللغة: | English |
| منشور في: |
Japan Poultry Science Association
2012-07-01
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| سلاسل: | The Journal of Poultry Science |
| الموضوعات: | |
| الوصول للمادة أونلاين: | https://www.jstage.jst.go.jp/article/jpsa/49/3/49_178/_pdf/-char/en |
| _version_ | 1827938008935956480 |
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| author | Ashley L. Shaw Kenneth S. Macklin John. P. Blake |
| author_facet | Ashley L. Shaw Kenneth S. Macklin John. P. Blake |
| author_sort | Ashley L. Shaw |
| collection | DOAJ |
| description | This experiment was conducted to evaluate the effect of coccidial control, dietary mineral density, and coccidial challenge on broiler chick performance. Commercial broiler chicks (1008) were placed across 48 floor pens (21 birds/pen, 6 replications/treatment) on either fresh or seeded bedding. Treatments involved phytase-supplemented diets containing two Ca-NPP levels (0.5% Ca, 0.25% NPP or 0.7% Ca, 0.35% NPP), two coccidiosis control strategies (vaccination or in-feed coccidiostat), and two Eimeria exposures (unchallenged or challenged). On d 11 and 20 body weight (BW) and feed consumption (FC) were recorded for each pen. Five birds/trt were sacrificed and intestinal samples were obtained for visual and microscopic lesion scoring on these days. The left tibia was also collected for the assessment of bone strength. BW, FC, and bone strength were unaffected (P>0.05) by diet, though coccidiosis control methods had an affect on both body weight gain (BWG) and FC from 0-20d. Coccidiosis challenge led to a decline (P<0.05) in overall BWG. Regardless of treatment, visual and microscopic scoring of the duodenum and ceca showed few differences (P>0.05). The percentage of birds having lesions associated with Eimeria acervulina was increased (P<0.05) on d 20. Overall, the results indicate that bird performance and skeletal strength are not affected by decreased Ca-NPP levels when diets are supplemented with phytase, but a coccidiosis challenge will result in reduced growth performance. |
| first_indexed | 2024-03-13T08:33:43Z |
| format | Article |
| id | doaj.art-31fef3dc997a4aaa94630e2fad901b31 |
| institution | Directory Open Access Journal |
| issn | 1346-7395 1349-0486 |
| language | English |
| last_indexed | 2024-03-13T08:33:43Z |
| publishDate | 2012-07-01 |
| publisher | Japan Poultry Science Association |
| record_format | Article |
| series | The Journal of Poultry Science |
| spelling | doaj.art-31fef3dc997a4aaa94630e2fad901b312023-05-31T01:15:34ZengJapan Poultry Science AssociationThe Journal of Poultry Science1346-73951349-04862012-07-0149317818210.2141/jpsa.011059jpsaPhytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria ChallengeAshley L. Shaw0Kenneth S. Macklin1John. P. Blake2Department of Poultry Science, Auburn University, USADepartment of Poultry Science, Auburn University, USADepartment of Poultry Science, Auburn University, USAThis experiment was conducted to evaluate the effect of coccidial control, dietary mineral density, and coccidial challenge on broiler chick performance. Commercial broiler chicks (1008) were placed across 48 floor pens (21 birds/pen, 6 replications/treatment) on either fresh or seeded bedding. Treatments involved phytase-supplemented diets containing two Ca-NPP levels (0.5% Ca, 0.25% NPP or 0.7% Ca, 0.35% NPP), two coccidiosis control strategies (vaccination or in-feed coccidiostat), and two Eimeria exposures (unchallenged or challenged). On d 11 and 20 body weight (BW) and feed consumption (FC) were recorded for each pen. Five birds/trt were sacrificed and intestinal samples were obtained for visual and microscopic lesion scoring on these days. The left tibia was also collected for the assessment of bone strength. BW, FC, and bone strength were unaffected (P>0.05) by diet, though coccidiosis control methods had an affect on both body weight gain (BWG) and FC from 0-20d. Coccidiosis challenge led to a decline (P<0.05) in overall BWG. Regardless of treatment, visual and microscopic scoring of the duodenum and ceca showed few differences (P>0.05). The percentage of birds having lesions associated with Eimeria acervulina was increased (P<0.05) on d 20. Overall, the results indicate that bird performance and skeletal strength are not affected by decreased Ca-NPP levels when diets are supplemented with phytase, but a coccidiosis challenge will result in reduced growth performance.https://www.jstage.jst.go.jp/article/jpsa/49/3/49_178/_pdf/-char/enbroilercoccidiosisdietary ca/peimeria spp. |
| spellingShingle | Ashley L. Shaw Kenneth S. Macklin John. P. Blake Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge The Journal of Poultry Science broiler coccidiosis dietary ca/p eimeria spp. |
| title | Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge |
| title_full | Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge |
| title_fullStr | Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge |
| title_full_unstemmed | Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge |
| title_short | Phytase Supplementation in a Reduced Calcium and Phosphorus Diet Fed to Broilers undergoing an Eimeria Challenge |
| title_sort | phytase supplementation in a reduced calcium and phosphorus diet fed to broilers undergoing an eimeria challenge |
| topic | broiler coccidiosis dietary ca/p eimeria spp. |
| url | https://www.jstage.jst.go.jp/article/jpsa/49/3/49_178/_pdf/-char/en |
| work_keys_str_mv | AT ashleylshaw phytasesupplementationinareducedcalciumandphosphorusdietfedtobroilersundergoinganeimeriachallenge AT kennethsmacklin phytasesupplementationinareducedcalciumandphosphorusdietfedtobroilersundergoinganeimeriachallenge AT johnpblake phytasesupplementationinareducedcalciumandphosphorusdietfedtobroilersundergoinganeimeriachallenge |