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The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure

This study investigated the effects of dietary chloride (Cl) reduction on laying performance and eggshell quality by substitution of sodium bicarbonate (NaHCO(3)) or sodium sulfate (Na(2)SO(4)) for part of dietary sodium chloride (NaCl), and further explored its mechanism for improving eggshell qual...

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Autores principales: Fu, Yu, Wang, Jing, Zhang, Hai-jun, Wu, Shu-geng, Zhou, Jian-min, Qi, Guang-hai
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8181175/
https://www.ncbi.nlm.nih.gov/pubmed/34082176
http://dx.doi.org/10.1016/j.psj.2021.101102
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author Fu, Yu
Wang, Jing
Zhang, Hai-jun
Wu, Shu-geng
Zhou, Jian-min
Qi, Guang-hai
author_facet Fu, Yu
Wang, Jing
Zhang, Hai-jun
Wu, Shu-geng
Zhou, Jian-min
Qi, Guang-hai
author_sort Fu, Yu
collection PubMed
description This study investigated the effects of dietary chloride (Cl) reduction on laying performance and eggshell quality by substitution of sodium bicarbonate (NaHCO(3)) or sodium sulfate (Na(2)SO(4)) for part of dietary sodium chloride (NaCl), and further explored its mechanism for improving eggshell quality. A total of 360 29-wk-old Hy-line Brown laying hens were randomly allocated to 5 dietary treatments, including a basal diet contained 0.33% NaCl (control group, 0.27% dietary Cl), and 4 experimental diets that contained 0.21% and 0.15% dietary Cl by substituting Na(2)SO(4) or NaHCO(3) for part of NaCl in the basal diet. No significant differences were observed in blood Na(+), Cl(−), K(+) and Ca(2+) levels and pH value as well as serum creatinine and uric acid contents among 5 treatments (P > 0.05). Dietary Cl reduction increased egg production and ADFI during wk 33 to 36, 37 to 40 and 29 to 40 of age and decreased feed conversion ratio during wk 37 to 40 of age (P < 0.05). The hens fed with diets containing 0.15% Cl increased eggshell breaking strength, thickness and weight ratio in wk 40 of age (P < 0.05). Birds fed with dietary 0.21% and 0.15% Cl exhibited higher effective layer thickness and lower mammillary layer thickness of eggshell than those fed with dietary 0.27% Cl (P < 0.05). Apparent Ca metabolizability of hens was increased with dietary Cl reduction (P < 0.05). Total Ca of eggshell of dietary 0.15% Cl group was higher than that of dietary 0.27% Cl group (P < 0.05). No significant differences in laying performance, eggshell quality and Ca metabolism of layers were observed between Na(2)SO(4) and NaHCO(3) replacement groups (P > 0.05). Overall, dietary Cl reductions could improve laying performance and eggshell quality by substitution of NaHCO(3) or Na(2)SO(4) for part of NaCl, and there were no differences in the improvements between these two substitutes. The improved eggshell quality may be attributed to improved eggshell ultrastructure and increased supply of eggshell Ca(2)CO(3).
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spelling pubmed-81811752021-06-15 The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure Fu, Yu Wang, Jing Zhang, Hai-jun Wu, Shu-geng Zhou, Jian-min Qi, Guang-hai Poult Sci METABOLISM AND NUTRITION This study investigated the effects of dietary chloride (Cl) reduction on laying performance and eggshell quality by substitution of sodium bicarbonate (NaHCO(3)) or sodium sulfate (Na(2)SO(4)) for part of dietary sodium chloride (NaCl), and further explored its mechanism for improving eggshell quality. A total of 360 29-wk-old Hy-line Brown laying hens were randomly allocated to 5 dietary treatments, including a basal diet contained 0.33% NaCl (control group, 0.27% dietary Cl), and 4 experimental diets that contained 0.21% and 0.15% dietary Cl by substituting Na(2)SO(4) or NaHCO(3) for part of NaCl in the basal diet. No significant differences were observed in blood Na(+), Cl(−), K(+) and Ca(2+) levels and pH value as well as serum creatinine and uric acid contents among 5 treatments (P > 0.05). Dietary Cl reduction increased egg production and ADFI during wk 33 to 36, 37 to 40 and 29 to 40 of age and decreased feed conversion ratio during wk 37 to 40 of age (P < 0.05). The hens fed with diets containing 0.15% Cl increased eggshell breaking strength, thickness and weight ratio in wk 40 of age (P < 0.05). Birds fed with dietary 0.21% and 0.15% Cl exhibited higher effective layer thickness and lower mammillary layer thickness of eggshell than those fed with dietary 0.27% Cl (P < 0.05). Apparent Ca metabolizability of hens was increased with dietary Cl reduction (P < 0.05). Total Ca of eggshell of dietary 0.15% Cl group was higher than that of dietary 0.27% Cl group (P < 0.05). No significant differences in laying performance, eggshell quality and Ca metabolism of layers were observed between Na(2)SO(4) and NaHCO(3) replacement groups (P > 0.05). Overall, dietary Cl reductions could improve laying performance and eggshell quality by substitution of NaHCO(3) or Na(2)SO(4) for part of NaCl, and there were no differences in the improvements between these two substitutes. The improved eggshell quality may be attributed to improved eggshell ultrastructure and increased supply of eggshell Ca(2)CO(3). Elsevier 2021-03-12 /pmc/articles/PMC8181175/ /pubmed/34082176 http://dx.doi.org/10.1016/j.psj.2021.101102 Text en © 2021 The Authors https://creativecommons.org/licenses/by/4.0/This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle METABOLISM AND NUTRITION
Fu, Yu
Wang, Jing
Zhang, Hai-jun
Wu, Shu-geng
Zhou, Jian-min
Qi, Guang-hai
The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title_full The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title_fullStr The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title_full_unstemmed The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title_short The partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
title_sort partial replacement of sodium chloride with sodium bicarbonate or sodium sulfate in laying hen diets improved laying performance, and eggshell quality and ultrastructure
topic METABOLISM AND NUTRITION
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8181175/
https://www.ncbi.nlm.nih.gov/pubmed/34082176
http://dx.doi.org/10.1016/j.psj.2021.101102
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