Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality
Summary: This study aimed to evaluate 2 phytases, at 2 supplementation doses, in broiler diets with nutritional matrices with reduction in Ca:total P (tP) ratio. One-day-old male chicks (n = 3,960) were distributed in an arrangement of 12 treatments, with 10 replicates each; the experimental unit co...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-09-01
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| Series: | Journal of Applied Poultry Research |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1056617120300386 |
| _version_ | 1818885017313476608 |
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| author | Caroline Bavaresco Everton L. Krabbe Valdir S. de Avila Letícia S. Lopes Bruno Wernick Fernando N. Martinez |
| author_facet | Caroline Bavaresco Everton L. Krabbe Valdir S. de Avila Letícia S. Lopes Bruno Wernick Fernando N. Martinez |
| author_sort | Caroline Bavaresco |
| collection | DOAJ |
| description | Summary: This study aimed to evaluate 2 phytases, at 2 supplementation doses, in broiler diets with nutritional matrices with reduction in Ca:total P (tP) ratio. One-day-old male chicks (n = 3,960) were distributed in an arrangement of 12 treatments, with 10 replicates each; the experimental unit consisted of a floor pen with 33 birds each. Trial lasted up to 42 D, and birds were given the experimental diets: T1—positive control 1 (high Ca:tP ratio—recommended amount); T2—negative control 1 (reduction of 0.16% Ca and 0.16% available P-AP); T3–T2 + 500 FTU/kg enzyme A; T4–T2 + 500 FTU/kg enzyme B; T5–T2 + 1000 FTU/kg enzyme A; T6–T2 + 1000 FTU/kg enzyme B; T7–positive control 2 (low Ca:tP ratio); T8—negative control 2 (reduction of 0.16% Ca and 0.16% AP); T9–T8 + 500 FTU/kg enzyme A; T10–T8 + 500 FTU/kg enzyme B; T11–T8 + 1000 FTU/kg enzyme A; and T12–T8 + 1000 FTU/kg enzyme B. At 21 and 42 D of age, performance variables were recorded (body weight, body weight gain, feed intake, and feed conversion ratio) and tibial bone composition (Ca and P) and resistance was determined (strength at rupture). Results indicate that enzyme supplementation was efficient, regardless of Ca:tP ratio. The highest phytase dose presented superior results, especially for the 21-D evaluation. Phytase “B,” a bacterial product, showed superior response on performance and bone quality. |
| first_indexed | 2024-12-19T15:58:45Z |
| format | Article |
| id | doaj.art-909a5914398d4133acc5260f0c41e1ff |
| institution | Directory Open Access Journal |
| issn | 1056-6171 |
| language | English |
| last_indexed | 2024-12-19T15:58:45Z |
| publishDate | 2020-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Applied Poultry Research |
| spelling | doaj.art-909a5914398d4133acc5260f0c41e1ff2022-12-21T20:15:00ZengElsevierJournal of Applied Poultry Research1056-61712020-09-01293584599Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone qualityCaroline Bavaresco0Everton L. Krabbe1Valdir S. de Avila2Letícia S. Lopes3Bruno Wernick4Fernando N. Martinez5Department of Zootechnics, Federal University of Pelotas, Campus Capão do Leão, RS, Brazil; Corresponding author:Embrapa Swine and Poultry, Concórdia, SC, BrazilEmbrapa Swine and Poultry, Concórdia, SC, BrazilEmbrapa Swine and Poultry, Concórdia, SC, BrazilBASF S.A, São Paulo, SP, BrazilBASF S.A, São Paulo, SP, BrazilSummary: This study aimed to evaluate 2 phytases, at 2 supplementation doses, in broiler diets with nutritional matrices with reduction in Ca:total P (tP) ratio. One-day-old male chicks (n = 3,960) were distributed in an arrangement of 12 treatments, with 10 replicates each; the experimental unit consisted of a floor pen with 33 birds each. Trial lasted up to 42 D, and birds were given the experimental diets: T1—positive control 1 (high Ca:tP ratio—recommended amount); T2—negative control 1 (reduction of 0.16% Ca and 0.16% available P-AP); T3–T2 + 500 FTU/kg enzyme A; T4–T2 + 500 FTU/kg enzyme B; T5–T2 + 1000 FTU/kg enzyme A; T6–T2 + 1000 FTU/kg enzyme B; T7–positive control 2 (low Ca:tP ratio); T8—negative control 2 (reduction of 0.16% Ca and 0.16% AP); T9–T8 + 500 FTU/kg enzyme A; T10–T8 + 500 FTU/kg enzyme B; T11–T8 + 1000 FTU/kg enzyme A; and T12–T8 + 1000 FTU/kg enzyme B. At 21 and 42 D of age, performance variables were recorded (body weight, body weight gain, feed intake, and feed conversion ratio) and tibial bone composition (Ca and P) and resistance was determined (strength at rupture). Results indicate that enzyme supplementation was efficient, regardless of Ca:tP ratio. The highest phytase dose presented superior results, especially for the 21-D evaluation. Phytase “B,” a bacterial product, showed superior response on performance and bone quality.http://www.sciencedirect.com/science/article/pii/S1056617120300386enzymefeed conversionweight gainminerals |
| spellingShingle | Caroline Bavaresco Everton L. Krabbe Valdir S. de Avila Letícia S. Lopes Bruno Wernick Fernando N. Martinez Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality Journal of Applied Poultry Research enzyme feed conversion weight gain minerals |
| title | Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| title_full | Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| title_fullStr | Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| title_full_unstemmed | Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| title_short | Calcium:phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| title_sort | calcium phosphorus ratios and supplemental phytases on broiler performance and bone quality |
| topic | enzyme feed conversion weight gain minerals |
| url | http://www.sciencedirect.com/science/article/pii/S1056617120300386 |
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