Effects of Dietary Vitamin C Supplemental Level on Laying Performance, Egg Quality and Serum Immune, Antioxidant and Hormonal Indices of Cage-Rearing Laying Ducks at High Ambient Temperature

HUANG Xuan; YAO Yaling; LI Chuang; ZHANG Xu; JIANG Guitao; HU Yan; DAI Qiuzhong

doi:10.3969/j.issn.1006-267x.2019.12.018

2019 , Vol. 31 >Issue 12: 5526 - 5532

DOI: https://doi.org/10.3969/j.issn.1006-267x.2019.12.018

Effects of Dietary Vitamin C Supplemental Level on Laying Performance, Egg Quality and Serum Immune, Antioxidant and Hormonal Indices of Cage-Rearing Laying Ducks at High Ambient Temperature

HUANG Xuan ,
YAO Yaling ,
LI Chuang ,
ZHANG Xu ,
JIANG Guitao ,
HU Yan ,
DAI Qiuzhong

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1. Animal Nutrition and Feeding Technology Laboratory, Hunan Institute of Animal Science and Veterinary Medicine, Changsha 410131, China;
2. Hunan Engineering Research Center of Poultry Production Safety, Changsha 410128, China;
3. Huaihua Animal Husbandry and Aquatic Transaction Center, Huaihua 418000, China

Received date: 2019-05-28

Online published: 2019-12-13

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Abstract

This study was conducted to evaluate the effects of dietary vitamin C supplemental level on laying performance, egg quality and serum immune, antioxidant and hormonal indices of cage-rearing laying ducks at high ambient temperature, and to evaluate vitamin C requirement of ducks. A total of 200 healthy 29-week-old Linwu ducks with similar laying rate were randomly assigned to 5 groups with 5 replicates in each group and 8 ducks in each replicate. Ducks in 5 experimental groups were fed the basal diet supplemented with 0, 200, 400, 600 and 800 mg/kg vitamin C, respectively. The experiment lasted for 7 weeks. The results showed as follows:1) the qualified rate of egg in 200 mg/kg vitamin C group was significantly higher than that in 0 mg/kg vitamin C group (P<0.05), and the qualified rate of egg in 400, 600 and 800 mg/kg vitamin C groups was significantly higher than that in 0 and 200 mg/kg vitamin C groups (P<0.05). 2) The eggshell thickness in 200, 400, 600 and 800 mg/kg vitamin C groups was significantly higher than that in 0 mg/kg vitamin C group (P<0.05). The albumen height in 400 mg/kg vitamin C group was significantly higher than that in 0 and 200 mg/kg vitamin C groups (P<0.05). 3) The serum immunoglobulin G content in 400, 600 and 800 mg/kg vitamin C groups was significantly higher than that in 0 mg/kg vitamin C group (P<0.05). The serum superoxide dismutase activity and glutathione content in 400, 600 and 800 mg/kg vitamin C groups were significantly higher than those in 0 and 200 mg/kg vitamin C groups (P<0.05). 4) The serum estradiol content in 400, 600 and 800 mg/kg vitamin C groups was significantly higher than that in 0 mg/kg vitamin C group (P<0.05). The serum insulin content in 400 mg/kg vitamin C group was significantly higher than that in 0 and 200 mg/kg vitamin C groups (P<0.05). In conclusion, dietary appropriate supplemental level of vitamin C can improve the qualified egg rate, egg quality, body antioxidant capacity, hormone indices and immune function of cage-rearing laying ducks. Comprehensive consideration, the dietary appropriate supplemental level of vitamin C for cage-rearing Linwu laying ducks at high ambient temperature is 400 mg/kg.

Key words： vitamin C; cage-rearing laying ducks; high ambient temperature; immune function; antioxidant capacity

Cite this article

HUANG Xuan , YAO Yaling , LI Chuang , ZHANG Xu , JIANG Guitao , HU Yan , DAI Qiuzhong . Effects of Dietary Vitamin C Supplemental Level on Laying Performance, Egg Quality and Serum Immune, Antioxidant and Hormonal Indices of Cage-Rearing Laying Ducks at High Ambient Temperature[J]. Chinese Journal of Animal Nutrition, 2019 , 31(12) : 5526 -5532 . DOI: 10.3969/j.issn.1006-267x.2019.12.018

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