Comparative effects of three phytases on the phosphorus and calcium use in the weaned piglet
| Autor: | C. Simões Nunes, Y. Wache, P. Guggenbuhl, F. Fru |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Calcium Phosphates
Swine Animal feed chemistry.chemical_element Calcium Excretion Feces Genetics Animals Food science 6-Phytase Fecal Excretion biology Phosphorus Citrobacter braakii General Medicine biology.organism_classification Animal Feed Diet chemistry Animal Nutritional Physiological Phenomena Animal Science and Zoology Phytase Food Science |
| Zdroj: | Journal of Animal Science. 90:95-97 |
| ISSN: | 1525-3163 0021-8812 |
| DOI: | 10.2527/jas.53891 |
| Popis: | The addition of phytase to swine diets has generally increased P digestibility and consequently reduced fecal excretion of P. The comparative effects on P and Ca digestibility of dietary inclusion of 5 different phytases were evaluated in the weaned piglet. RONOZYME HiPhos is a microbial 6-phytase produced by synthetic genes, mimicking a gene from Citrobacter braakii, and was compared to the Escherichia coli-derived phytases Phyzyme and OptiPhos. In total, 112 weaned piglets (28 d old) were allocated to 8 equal groups of 14 animals. Pigs were fed for 29 d a vegetable-based diet without addition of mineral P [Co(-)] or this diet supplemented with 12 g/kg feed of CaHPO(4) [Co(+)] or with HiPhos at 1000 units/kg (H1000) or 1500 units/kg (H1500), Phyzyme at 500 units/kg (P500) or 750 units/kg (P750), or OptiPhos at 500 units/kg (O500) or 750 units/kg (O750). All phytases reduced (P < 0.05) fecal P concentration and excretion and increased (P < 0.05) P digestibility and apparent P absorption. The digestible P equivalences of H1000, H1500, P500, P750, O500, and O750 were 0.94, 1.50, 0.67, 0.92, 0.58, and 1.11 g of full available P/kg of feed, respectively. Calcium digestibility was increased (P < 0.05) and Ca excretion reduced (P < 0.05) by the phytases. The 3 phytase preparations increased digestibility and apparent absorption of P and Ca in weaned piglets fed a diet containing P exclusively from plant origin. |
| Databáze: | OpenAIRE |
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