Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting
The effect of down specifying nutrients in diets supplemented with Buttiauxella spp. phytase was studied in a commercial trial. Three treatments were tested with five replicate groups, each containing 700, one-day-old straight run Ross 308 broilers. Birds were fed pelleted diets from days 0-42 in fo...
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Brill
2020-08-01
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| Series: | Journal of Applied Animal Nutrition |
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| Online Access: | https://www.wageningenacademic.com/doi/10.3920/JAAN2020.0002 |
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| author | Y. Dersjant-Li K. Van de Belt C. Kwakernaak L. Marchal |
| author_facet | Y. Dersjant-Li K. Van de Belt C. Kwakernaak L. Marchal |
| author_sort | Y. Dersjant-Li |
| collection | DOAJ |
| description | The effect of down specifying nutrients in diets supplemented with Buttiauxella spp. phytase was studied in a commercial trial. Three treatments were tested with five replicate groups, each containing 700, one-day-old straight run Ross 308 broilers. Birds were fed pelleted diets from days 0-42 in four phases: starter (days 0-10); grower (days 11-21); finisher 1 (days 22-35) and finisher 2 (days 36-42). A nutritionally adequate, unsupplemented, positive control (PC) diet based on wheat, corn and soybean meal was compared against two down specified, negative control (NC) diets containing Buttiauxella phytase supplemented at 500 or 1000 FTU/kg. The reduction level was 0.134 and 0.159% unit for digestible phosphorus, 0.164 and 0.189% unit for calcium, 0.03 and 0.04% unit for sodium, 0.283 and 0.309 MJ/kg for nitrogen corrected apparent metabolizable energy in all phases and variable digestible amino acids in different phases, respectively for the diets containing the phytase at 500 and 1000 FTU/kg. An unsupplemented NC diet was not included, as it would have caused welfare and health issues. Weight gain and mortality-corrected feed conversion ratio for birds receiving phytase at either inclusion levels were equivalent to the PC group. Feed intake was increased by 500 FTU/kg phytase (P<0.05) during 0-21 d vs PC. Including 1000 FTU/kg phytase reduced water intake vs PC at 0-42 d and water-to-feed intake ratios, after the starter phase (P<0.05). Carcass yield in birds supplemented with either phytase level was not different from PC. Tibia ash was unaffected by treatment. Estimated feed costs (inclusive of phytase) were lower in supplemented than un-supplemented (PC) diets, by 10.0 to 13.7 €/ton diet. The trial demonstrated that reducing nutrient specifications of diets supplemented with Buttiauxella phytase maintained growth performance, lowered feed costs, with production benefits maximised at inclusion levels of 1000 FTU/kg. |
| format | Article |
| id | doaj-art-1617b165f68c4a1995e24f92babb23c2 |
| institution | Kabale University |
| issn | 2049-257X |
| language | English |
| publishDate | 2020-08-01 |
| publisher | Brill |
| record_format | Article |
| series | Journal of Applied Animal Nutrition |
| spelling | doaj-art-1617b165f68c4a1995e24f92babb23c22025-01-03T01:25:28ZengBrillJournal of Applied Animal Nutrition2049-257X2020-08-0182495910.3920/JAAN2020.0002Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial settingY. Dersjant-Li0K. Van de Belt1C. Kwakernaak2L. Marchal3DuPont Nutrition and Biosciences, Archimedesweg 30, 2333 CN Leiden, the Netherlands.Schothorst Feed Research, P.O. Box 533, 8200 AM Lelystad, the Netherlands.Schothorst Feed Research, P.O. Box 533, 8200 AM Lelystad, the Netherlands.DuPont Nutrition and Biosciences, Archimedesweg 30, 2333 CN Leiden, the Netherlands.The effect of down specifying nutrients in diets supplemented with Buttiauxella spp. phytase was studied in a commercial trial. Three treatments were tested with five replicate groups, each containing 700, one-day-old straight run Ross 308 broilers. Birds were fed pelleted diets from days 0-42 in four phases: starter (days 0-10); grower (days 11-21); finisher 1 (days 22-35) and finisher 2 (days 36-42). A nutritionally adequate, unsupplemented, positive control (PC) diet based on wheat, corn and soybean meal was compared against two down specified, negative control (NC) diets containing Buttiauxella phytase supplemented at 500 or 1000 FTU/kg. The reduction level was 0.134 and 0.159% unit for digestible phosphorus, 0.164 and 0.189% unit for calcium, 0.03 and 0.04% unit for sodium, 0.283 and 0.309 MJ/kg for nitrogen corrected apparent metabolizable energy in all phases and variable digestible amino acids in different phases, respectively for the diets containing the phytase at 500 and 1000 FTU/kg. An unsupplemented NC diet was not included, as it would have caused welfare and health issues. Weight gain and mortality-corrected feed conversion ratio for birds receiving phytase at either inclusion levels were equivalent to the PC group. Feed intake was increased by 500 FTU/kg phytase (P<0.05) during 0-21 d vs PC. Including 1000 FTU/kg phytase reduced water intake vs PC at 0-42 d and water-to-feed intake ratios, after the starter phase (P<0.05). Carcass yield in birds supplemented with either phytase level was not different from PC. Tibia ash was unaffected by treatment. Estimated feed costs (inclusive of phytase) were lower in supplemented than un-supplemented (PC) diets, by 10.0 to 13.7 €/ton diet. The trial demonstrated that reducing nutrient specifications of diets supplemented with Buttiauxella phytase maintained growth performance, lowered feed costs, with production benefits maximised at inclusion levels of 1000 FTU/kg.https://www.wageningenacademic.com/doi/10.3920/JAAN2020.0002amino acidsbroilersgrowth performancenutrient matrixphytase |
| spellingShingle | Y. Dersjant-Li K. Van de Belt C. Kwakernaak L. Marchal Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting Journal of Applied Animal Nutrition amino acids broilers growth performance nutrient matrix phytase |
| title | Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| title_full | Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| title_fullStr | Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| title_full_unstemmed | Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| title_short | Buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| title_sort | buttiauxella phytase maintains growth performance in broilers fed diets with reduced nutrients under a commercial setting |
| topic | amino acids broilers growth performance nutrient matrix phytase |
| url | https://www.wageningenacademic.com/doi/10.3920/JAAN2020.0002 |
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