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Campo DC | Valor | Idioma |
---|---|---|
dc.creator | Naves, L. de P. | - |
dc.creator | Rodrigues, P. B. | - |
dc.creator | Teixeira, L. do V. | - |
dc.creator | Oliveira, E. C. de | - |
dc.creator | Saldanha, M. M. | - |
dc.creator | Alvarenga, R. R. | - |
dc.creator | Corrêa, A. D. | - |
dc.creator | Lima, R. R. | - |
dc.date.accessioned | 2017-03-23T18:22:37Z | - |
dc.date.available | 2017-03-23T18:22:37Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | NAVES, L. de P. et al. Efficiency of microbial phytase supplementation in dietsformulated with different calcium:phosphorus ratios, supplied tobroilers from 22 to 33 days old. Journal of Animal Physiology and Animal Nutrition, Berlin, v. 99, n. 1, p. 139-149, 2014. | pt_BR |
dc.identifier.uri | http://onlinelibrary.wiley.com/doi/10.1111/jpn.12186/full | pt_BR |
dc.identifier.uri | http://repositorio.ufla.br/jspui/handle/1/12539 | - |
dc.description.abstract | An experiment was conducted with broilers from 22 to 33 days of age to evaluate the efficiency of six microbialphytases supplemented in diets (1500 FTU/kg) that were formulated with three different calcium:available phos-phorus (Ca:Pavail) ratios (4.5:1.0, 6.0:1.0 and 7.5:1.0). A positive control diet without phytase was formulatedwith a Ca:Pavailratio of 7.5:3.4 to meet the nutritional requirements of the broilers. The P and ash contents of thetibia, magnesium in the plasma, performance, balance and retention of phytate phosphorus (Pphyt), intake oftotal P and nitrogen (N), nitrogen-corrected apparent metabolizable energy and apparent digestibility of dry mat-ter of the diets were not influenced (p > 0.05) by the type of phytase or the dietary Ca:Pavailratio. However, therewas an interaction (p < 0.05) between the phytase type and the Ca:Pavailratio for the retention coefficients oftotal P, Ca and N. Phytase B resulted in the highest Ca deposition in the tibia (p < 0.01). Phytases D, E and Freduced the Ca concentrations in the tibia (p < 0.01) and plasma (p < 0.05). Phytase D increased the P level inthe plasma and decreased the total P excretion (p < 0.01). Phytases E and F increased Ca excretion, while phy-tase A reduced it (p < 0.01). Regardless of the phytase type, increasing the dietary Ca:Pavailratio reduced(p < 0.05) the plasma P concentration and the excretion of total P and N and, conversely, increased (p < 0.05)the plasma concentration, intake and excretion of Ca. For the rearing period evaluated, it is possible to reducethe Pavailof the diet to 1.0 g/kg when Ca is maintained at 7.5 g/kg, and the diet is supplemented with 1500 FTUof phytase A, C, D or E/kg. This diet allows the maintenance of performance and adequate bone mineralization,and it improves the Ca, total P and Pphytutilization in addition to reducing the excretion of N and P into theenvironment. | pt_BR |
dc.language | en_US | pt_BR |
dc.publisher | Wiley | pt_BR |
dc.rights | restrictAccess | pt_BR |
dc.source | Journal of Animal Physiology and Animal Nutrition | pt_BR |
dc.subject | Metabolism | pt_BR |
dc.subject | Microbial phytase supplementation | pt_BR |
dc.subject | Broilers - Nutrition | pt_BR |
dc.title | Efficiency of microbial phytase supplementation in dietsformulated with different calcium:phosphorus ratios, supplied tobroilers from 22 to 33 days old | pt_BR |
dc.type | Artigo | pt_BR |
Aparece nas coleções: | DQI - Artigos publicados em periódicos |
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