Requirement of Sodium to Molted Laying Hens

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...

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Bibliographic Details
Published in:Brazilian Journal of Poultry Science 2020-01, Vol.22 (1)
Main Authors: Melo, RD, Cruz, FGG, Melo, LD, Feijó, JC, Rufino, JPF, Brasil, RJM, Oliveira Fº, PA, Silva, FMF
Format: Article
Language:English
Subjects:
AGRICULTURE, DAIRY & ANIMAL SCIENCE
Egg quality
eggshell
ORNITHOLOGY
sodium
weight gain
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Summary: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
ISSN:1516-635X
1806-9061
1806-9061
DOI:10.1590/1806-9061-2019-1102