Response of broiler chickens in the starter and finisher phases to 3 sources of microbial phytase
| Autor: | J. A. Jendza, P. Ader, P. C. Xue, O.O. Babatunde, S. A. Adedokun, Olayiwola Adeola |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Sodium
Randomized block design chemistry.chemical_element Feed conversion ratio Metabolism and Nutrition Random Allocation 03 medical and health sciences Nutrient Starter Animal science tibia ash Animals 030304 developmental biology lcsh:SF1-1100 6-Phytase 0303 health sciences broilers Phosphorus 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences General Medicine Animal Feed 040201 dairy & animal science Diet chemistry digestibility phytase Dietary Supplements Animal Nutritional Physiological Phenomena Digestion Animal Science and Zoology Phytase lcsh:Animal culture Chickens performance |
| Zdroj: | Poultry Science, Vol 99, Iss 8, Pp 3997-4008 (2020) Poultry Science |
| ISSN: | 0032-5791 |
| Popis: | A broiler chicken study was conducted for 42 D to evaluate their responses to 3 commercially available microbial phytases. Growth performance, nutrient digestibility, and bone mineralization at days 21 and 42 posthatching were used as parameters of evaluation. The study was a randomized complete block design with 12 treatments, 8 replicate pens, and 25 birds per pen. Treatments included a positive control (PC), a negative control (NC) with crude protein (CP), nonphytate phosphorus (P), and calcium (Ca) reduced by 18, 1.5, and 1.8 g/kg, respectively; the NC + 4 levels of phytase A (250, 500, 750, 1,000 FTU/kg), 3 levels of phytase B (250, 500, 750 FTU/kg), and 3 levels of phytase C (500, 750, 1,000 FTU/kg). Broilers fed the NC diet had reduced (P |
| Databáze: | OpenAIRE |
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