Effects of graded levels of phytase supplementation on growth performance, serum biochemistry, tibia mineralization, and nutrient utilization in Pekin ducks
| Autor: | Y.F. Liu, K.Y. Zhang, Y. Zhang, S.P. Bai, X.M. Ding, J.P. Wang, H.W. Peng, Y. Xuan, Z.W. Su, Q.F. Zeng |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Poultry Science, Vol 99, Iss 10, Pp 4845-4852 (2020) |
| Druh dokumentu: | article |
| ISSN: | 0032-5791 61718947 |
| DOI: | 10.1016/j.psj.2020.06.047 |
| Popis: | A total of 560 one-day-old Pekin ducks were randomly allocated to 7 treatments with 8 replicate cages of 10 ducks per cage. The treatments included a corn–rice bran–soybean meal–based diet with recommended nonphytate phosphorus (NPP) (0.40% for 1–14 D/0.35% for 15–35 D, positive control; PC), NPP-deficient diet (0.22% for 1–14 D/0.18% for 15–35 D, negative control; NC), and NC diets supplemented with different levels of phytase (500, 2,500, 5,000, 7,500, 10,000 FTU/kg). Compared with the PC diet, feeding the NC diet significantly decreased (P |
| Databáze: | Directory of Open Access Journals |
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