| Autor: |
RD Melo, FGG Cruz, LD Melo, JC Feijó, JPF Rufino, RJM Brasil, PA Oliveira Fº, FMF Silva |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Brazilian Journal of Poultry Science, Vol 22, Iss 1 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1806-9061 |
| DOI: |
10.1590/1806-9061-2019-1102 |
| Popis: |
ABSTRACT The objective of this study was to determine the ideal requirement of sodium to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. Hisex White laying hens 150 with 84 weeks-of-age were used. The experimental design was completely randomized in a factorial scheme (5x3) with treatments constituted by five levels of sodium (0.10, 0.15, 0.20, 0.25, and 0.30%) in the diets, and three postmolt stages (early = 21 days, medium = 63 days, and final = 105 days). Performance and egg quality results were evaluated by Tukey test at 5%. Eggshell resistance and weight gain results were evaluated by polynomial regression at 5%. Except the yolk height, all performance and egg quality variables were affected (p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
