Effect of immobilized fungal phytase on growth performance and bone traits of broilers fed with low dietary calcium and phosphorus
| Autor: | Divya Shet, Karthik Subramanya Bhat, V.B. Awachat, A.V. Elangovan, Jyotirmoy Ghosh, D.T. Pal, Sreeja Ajith |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Veterinary medicine chemistry.chemical_element Calcium broiler Feed conversion ratio SF1-1100 Excretion 03 medical and health sciences Starter Animal science Dry weight SF600-1100 phosphorus calcium General Veterinary Chemistry Phosphorus 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences 040201 dairy & animal science Animal culture 030104 developmental biology phytase Phytase Research Article |
| Zdroj: | Veterinary World, Vol 11, Iss 6, Pp 758-764 (2018) Veterinary World |
| ISSN: | 2231-0916 0972-8988 |
| Popis: | Aim: The aim of this study was to investigate the effects of phytase which was laboratory produced by Aspergillus foetidus on the growth performance, mineral retention, and bone traits of broilers fed with low dietary calcium and phosphorus. Materials and Methods: The extracellular phytase enzyme secreted into the crude filtrate was concentrated by ammonium sulfate precipitation to obtain an activity of 500 phytase units (FTU). A total of 90 1-day-old chicks (Cobb 500) were randomly divided into three treatment groups with five replicates having six birds each. Dietary treatment, T1, was with 0.45% non-phytate P (NPP) during starter and 0.40% during finisher phase with 1% Ca. Dietary treatment, T2, had 0.37% NPP during starter and 0.32% in finisher phase with 1% Ca and supplemental lab phytase at 500 FTU/kg. Dietary treatment, T3, was similar to T2 with a lower Ca of 0.8%. Results: There was no significant difference among the dietary treatments with regard to body weight gain, feed intake, feed conversion ratio, and Ca retention (p>0.05). However, a significant improvement in retention of P by birds was observed in phytase supplemental groups T2 and T3 (p |
| Databáze: | OpenAIRE |
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