Effect of Dietary Zinc Level on Egg Production Performance and Eggshell Quality Characteristics in Laying Duck Breeders in Furnished Cage System

Huang, Liang; Shen, Jiajia; Feng, Yong; Li, Daquan; Wang, Wence; Yang, Lin; Zhu, Yating

doi:10.1007/s12011-019-01927-9

Cited by 5 publications

(3 citation statements)

References 40 publications

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“…Consistent with most previous studies in laying hens ( Abd El-Hack et al, 2018a ; 2018b ; Li et al, 2019b ; Abedini et al, 2018 ) and ducks ( Chen et al, 2017 ; Huang et al, 2020 ; Zhang et al, 2020 ), dietary Zn supplementation increased egg production, mass, and feed efficiency in the laying ducks during the late phase of production in the present study. Some studies in laying hens, however, failed to show productive performance being affected by Zn supplementation ( Zhang et al, 2017a ; Han et al, 2020 ), which possibly reflects the short feeding period (8 wk or 10 wk).…”

Section: Discussionsupporting

confidence: 93%

“…Compared with studies in layers, few studies have reported the Zn application in laying ducks, and its effect on shell quality and supplemental levels needed further study. In duck breeders at 36 wk of age, dietary supplementation of 140 mg Zn/kg increased palisade layer and shell thickness rather than other shell quality indices ( Huang et al, 2020 ). In contrast, Chen et al (2017) reported that supplementation of Zn (15–90 mg/kg) in the diet did not affect the shell quality of laying ducks at the peak phase of production.…”

Section: Introductionmentioning

confidence: 99%

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Dietary zinc supplementation affects eggshell quality and ultrastructure in commercial laying ducks by influencing calcium metabolism

et al. 2022

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This study evaluated dietary Zn supplementation on productive performance, eggshell quality and ultrastructure, and calcium metabolism during eggshell formation in laying ducks. A total of 360 Longyan laying ducks (45-wk) were randomly divided into 5 treatment groups with 6 replicates of 12 birds each and fed for 20 wk. The 6 treatments fed the basal diet supplemented with 0 (control), 20, 40, 80, or 160 mg Zn/kg (ZnSO 4 ·H 2 O). Dietary supplemental level at 80 mg/kg increased egg production (4.3%) and mass (5.7%), and decreased FCR (2.9%) compared to the basal diet, and these indices increased quadratically with increasing Zn supplemental levels ( P < 0.05). The shell breaking strength (15.8%) and fracture toughness (10.6%) were higher with the supplementation of Zn at 80 mg/kg than the basal diet, and increased quadratically with Zn supplementation ( P < 0.05). Dietary supplementation of Zn at 80 mg/kg improved shell ultrastructure by increasing total (9.0%) and effective thickness (14.2%) and decreasing mammillary thickness (12.0%), and their responses were quadratic with increasing Zn levels ( P < 0.05). The supplementation of Zn affected the calcium contents in plasma, tibias and ulna, ulna phosphorus content, and linear and quadratic effects were observed, and higher values were observed with 160 mg/kg Zn supplementation than control ( P < 0.05). The supplemental Zn level at 80 mg/kg increased shell effective thickness in growth stage ( P < 0.05), and shell calcium and phosphorus content in initial and growth stages ( P < 0.05). Dietary Zn supplementation did not affect the gene expression of Ca 2+ transporters in the eggshell gland, but affected the expression of HCO 3 − exchanger in initial and growth stage ( P < 0.05). Overall, dietary Zn supplementation could improve productive performance and shell quality in laying ducks at late phase of production, and calcium metabolism and deposition were modulated by Zn influencing HCO 3 − secretion and thus affecting shell ultrastructure and quality. A supplemental level of 80 mg/kg Zn in the diet with a basal content of 34.0 mg/kg was optimal, and higher level (160 mg/kg) decreased shell calcium deposition by depressing its metabolism.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Dietary zinc supplementation affects eggshell quality and ultrastructure in commercial laying ducks by influencing calcium metabolism

et al. 2022

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“…Recent study has demonstrated that dietary high level of 120 mg Zn/kg exhibited growth-promoting effect and improved the intestinal morphology and barrier integrity on Pekin ducks from 1 to 35 d of age ( Wen et al., 2018 ). In caged systems, dietary high level of 140 mg Zn/kg level increased the ultrastructural palisade layer thickness contributing to greater eggshell thickness of duck breeders than 40 mg Zn/kg ( Huang et al., 2020 ). Owing to the higher bioavailability organic Zn, the greater improvement achieved by organic Zn supplementation has been reported in broilers and hens ( Huang et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Mineral requirements in ducks: an update

et al. 2020

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Mineral nutrition plays a critical role in growth and bone mineralization in meat ducks as well as reproductive performance in duck layers and duck breeders. In addition to improving production performance parameters, minerals are also essential to support several enzymatic systems to enhancing antioxidant ability and immune function. This review explores the biological function and metabolism of minerals in the body, as well as mineral feeding strategy of various species of ducks. Topics range from mineral requirement to the physiological role of macroelements such as calcium and phosphorus and microelements such as zinc and selenium, etc. As with the improvement of genetic evolution and upgrade of rearing system in duck production, mineral requirements and electrolyte balance are urgent to be re-evaluated using sensitive biomarkers for the modern duck breed characterized by the rapid growth rate and inadequate bone development and mineralization. For duck breeders, mineral nutrition is not only required for maximal egg production performance but also for maintaining normal embryonic development and offspring's performance. Therefore, the proper amounts of bioavailable minerals need to be supplemented to maintain the mineral nutritional state of duck species during all phases of life. In addition, more positive effects of high doses microelements supplementations have been revealed for modern meat ducks subjected to various stresses in commercial production. The nutritional factors of mineral sources, supplemental enzymes, and antinutritional factors from unconventional ingredients should be emphasized to improve the effectiveness of mineral nutrition in duck feed formulation. Organic mineral sources and phytase enzymes have been adopted to reduce the antagonistic action between mineral and antinutritional factors. Therefore, special and accurate database of mineral requirements should be established for special genotypes of ducks under different rearing conditions, including rearing factors, environmental stresses and diets supplemented with organic sources, phytase and VD 3 .

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Determining the optimal level and the effect of different zinc sources on performance, egg quality and the immune system of laying hens at the end of the production period

Alirezaei Shahraki,

Kheiri,

Amanlou

et al. 2024

Veterinary Medicine & Sci

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BackgroundTrace elements, such as zinc, magnesium and copper, are essential for improving the performance and health of broiler breeders and the development of chicken embryos. These elements are integral to various proteins involved in metabolism, hormone secretion and the immune system, necessitating their inclusion in small amounts in poultry diets.ObjectivesThis study aimed to determine the optimal level and effect of different zinc sources on performance, egg quality and the immune system of laying hens at the end of the production period.MethodsThe experiment involved 520 Lohmann LSL laying hens, aged 80 weeks, divided into 13 treatments with 5 replications and 8 birds per replication. The hens were fed diets supplemented with 40, 60 and 80 mg/kg of zinc from various sources: mineral zinc oxide, mineral zinc sulphate, organic zinc chelated with glycine and organic zinc chelated with an organic acid. Key parameters measured included body weight, egg weight and immune response.ResultsThe basal diet contained 63.58 mg/kg of zinc, with the requirement per the Lohmann LSL guideline being 80 mg/kg. Zinc supplementation significantly increased body weight in the second month, with 80 mg/kg being the optimal dose. Zinc oxide notably increased egg weight compared to the control. The hens utilized zinc from all sources, resulting in weight gain and improved parameters such as egg quality. Immune parameters were also positively influenced by zinc supplementation.ConclusionsZinc supplementation at appropriate levels enhances the performance and egg quality of laying hens, particularly at the end of the production period. It improves bioavailability, enriches eggs and mitigates age‐related declines in productivity.

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Effect of Dietary Zinc Level on Egg Production Performance and Eggshell Quality Characteristics in Laying Duck Breeders in Furnished Cage System

Cited by 5 publications

References 40 publications

Dietary zinc supplementation affects eggshell quality and ultrastructure in commercial laying ducks by influencing calcium metabolism

Dietary zinc supplementation affects eggshell quality and ultrastructure in commercial laying ducks by influencing calcium metabolism

Mineral requirements in ducks: an update

Determining the optimal level and the effect of different zinc sources on performance, egg quality and the immune system of laying hens at the end of the production period

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