Effect of dietary 25-hydroxycholecalciferol supplementation and high stocking density on performance, egg quality, and tibia quality in laying hens

被引：36

作者：

Wang, Jianping ^{[1
]}

Qiu, Lingyun ^{[1
]}

Gong, Haojie ^{[1
]}

Celi, Pietro ^{[2
,3
]}

Yan, Lei ^{[3
]}

Ding, Xuemei ^{[1
]}

Bai, Shiping ^{[1
]}

Zeng, Qiufeng ^{[1
]}

Mao, Xiangbing ^{[1
]}

Xu, Shengyu ^{[1
]}

Wu, Caimei ^{[1
]}

Zhang, Keying ^{[1
]}

机构：

[1] Sichuan Agr Univ, Anim Nutr Inst, Key Lab Anim Dis Resistance Nutr, Minist Agr & Rural Affairs,Minist Educ, Chengdu 611130, Peoples R China

[2] Univ Melbourne, Fac Vet & Agr Sci, Parkville, Vic, Australia

[3] DSM Vitamin Shanghai Ltd, DSM Nutr Prod, Shanghai, Peoples R China

来源：

POULTRY SCIENCE | 2020年 / 99卷 / 05期

基金：

中国国家自然科学基金;

关键词：

25-hydroxycholecalciferol; stocking density; production performance; egg quality; tibia quality; BONE-MINERAL DENSITY; CAGE DENSITY; EGGSHELL COLOR; IN-VITRO; CALCIUM; DYSCHONDROPLASIA; CHOLECALCIFEROL; PERCHES; PHYTASE; HEALTH;

D O I：

10.1016/j.psj.2019.12.054

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

This study was conducted to determine the effects of 25-hydroxycholecalciferol (25-OH-D-3) on performance, egg quality, tibia quality, and serum hormones concentration in laying hens reared under high stocking density. A total of 800 45-week-old Lohmann laying hens were randomly allotted into a 2 ! 2 factorial design with 2 levels of dietary 25-OH-D-3 levels (0 and 69 mu g/kg) and 2 rates of stocking densities [506 (low density) and 338 (high density) cm(2)/hen]. Laying hens were monitored for 16 wk. High stocking density decreased laying rate, egg weight, and feed intake compared with low stocking density (P < 0.01) during 1 to 8 wk and 1 to 16 wk. Overall, high stocking density increased eggshell lightness value and decreased shell redness and yellowness value, strength, thickness, and relative weight compared with low stocking density (P < 0.05). Dietary supplementation with 25-OH-D-3 reduced the value of the eggshell lightness and increased its yellowness and eggshells weight (P <= 0.05). The increase in eggshell thickness was more pronounced when 25-OH-D-3 was supplemented to layers under high stocking density (interaction, P < 0.05). Layers under high stocking density had lower ash content and calcium content in the tibia than layers under low stocking density (P < 0.04); dietary 25-OH-D-3 increased tibia strength compared with no addition (P < 0.05). Layers under high stocking density had higher serum concentrations of 25-OH-D-3, corticosterone (CORT), lipopolysaccharide (LPS), and osteocalcin (OC; P < 0.05), lower content of parathyroid hormone (PTH) compared with layers under low stocking density (P < 0.01). Dietary 25-OH-D-3 increased serum concentration of 25-OH-D-3, carbonic anhydrase (CA), and calcitonin (CT) (P < 0.01) and reduced corticosterone, lipopolysaccharide and osteocalcin concentration (P <= 0.05). The increase effect in PTH was more pronounced when 25-OH-D-3 was supplemented to layers under high stocking density (interaction, P <= 0.05). Overall, the results gathered in this study indicate that high stocking density result in reducing production performance, shell color and quality, and tibia health, whereas dietary 25-OH-D-3 was able to maintain tibia health and to mitigate the negative impact of high stocking density on productive performance.

引用

页码：2608 / 2615

页数：8

共 43 条

[1] Dietary patterns reflecting healthy food choices are associated with lower serum LPS activity [J].