| Autor: |
Xujie Liao, Jiakun Yan, Jionghao Chen, Zhenyu Huang, Tianshuai Xiao, Changqing Li, Chong Pan, Xin Yang, Yanli Liu, Thomas D. Crenshaw, Xiaojun Yang, Zhouzheng Ren |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Animal Nutrition, Vol 11, Iss , Pp 132-141 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2405-6545 |
| DOI: |
10.1016/j.aninu.2022.07.003 |
| Popis: |
Phosphorus metabolism in laying hens is a highly dynamic process over the course of the 24 h egg-laying cycle. Adjusting the phosphorus feeding regimen according to the daily egg-laying cycle may help to improve phosphorus utilization efficiency. Hy-Line Brown layers (n = 120; 70 wk old) were offered 4 different phosphorus daily regimens: (1) RR, fed regular phosphorus at both 09:00 and 17:00; (2) RL, fed regular phosphorus at 09:00 and low phosphorus at 17:00; (3) LR, fed low phosphorus at 09:00 and regular phosphorus at 17:00; (4) LL, fed low phosphorus at both 09:00 and 17:00. The regular and low phosphorus diets contained 0.32% and 0.14% non-phytate phosphorus, respectively. The feeding trial lasted for 12 wk. As a result, layers on the RL regimen had decreased laying rate (P 0.05); (2) decreased phosphorus excretion (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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