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Effects of green tea powder on production performance, egg quality, and blood biochemical parameters in laying hens

文献类型： 外文期刊

作者： Li, Junying 1 ; Chang, Xueling 2 ; Chen, Xiangming 3 ; Ma, Ruiyu 1 ; Qi, Renrong 1 ; Lu, Wei 1 ; Li, Yan 1 ; Wan, Yi 1 ; Qiu, Qinqin 4 ; Shao, Qiance 4 ; Liu, Aiqiao 5 ; Zhan, Kai 1 ;

作者机构： 1.Anhui Acad Agr Sci, Inst Anim Husb & Vet Med, Anhui Key Lab Livestock & Poultry Prod Safety Engn, Hefei 230031, Peoples R China

2.Anhui Sci & Technol Univ, Coll Anim Sci, Bengbu 233100, Peoples R China

3.Anhui Agr Univ, Sch Life Sci, Hefei 230036, Peoples R China

4.Anhui Ningqing Tea Co Ltd, Xuancheng 245300, Peoples R China

5.Beijing Huadu Yukou Poultry Ind Co Ltd, Beijing 101206, Peoples R China

关键词： green tea powder; laying hen; blood biochemical parameter; egg quality

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2023 年 102 卷 10 期

页码：

收录情况： SCI

摘要： The paper aimed to evaluate the effects of dietary inclusion of green tea powder (GTP) on laying performance, egg quality, and blood biochemical parame-ters of laying hens. A total of 240 Jingfen No. 6 laying hens (age, 24 wk) were randomly allocated into 4 groups: control group (CON, basal diet), GTP0.5, GTP0.75, and GTP1.0 (basal diet included 0.5, 0.75, and 1.0% GTP, respectively). Each group has 5 replicates with 12 birds each. The feeding trial lasted 8 wk. The results showed that the hen-day egg production rate in GTP0.5 and GTP 0.75 group was higher than that of GTP1.0 group (P < 0.05), hen-day egg production rate in the GTP1.0 group was lower compared to the CON group (P > 0.05), the feed conversion ratio (FCR) in the GTP0.75 group was lower than that in CON and GTP 1.0 group (P < 0.05) during the entire experimental period. Albumen height and Haugh unit were higher in the GTP0.75 and GTP1.0 group compared to the CON group at d 56 (P < 0.05). At the end of experiment, plasma TG content in the GTP0.75 and GTP1.0 group was lower than that in the CON group (P < 0.05), the T-CH concentration in the GTP0.5 and GTP0.75 group was lower compared to the CON group (P < 0.05), plasma LDL-C and CORT concentrations were decreased by dietary GTP supplementation (P < 0.05), the HDL-C and BUN concentrations in the GTP0.75 and GTP1.0 group were higher than that in the CON group (P < 0.05). The antibody titers of H5N1 in the GTP0.75 and GTP1.0 group, and H7N9 in the GTP1.0 group were lower than that in the CON group (P < 0.05). In conclu-sion, dietary GTP inclusion could affect laying perfor-mance, regulate lipid metabolism, and have no favorable influence on antibody titers of H5N1 and H7N9, herein, dietary 0.5% GTP inclusion is suggested for Jingfen No. 6 laying hens during the peak laying period.

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