饲料营养 Feed science and technology

芪草提取物对蛋鸡产蛋性能、蛋品质及胆固醇代谢的影响

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  • 北京农学院动物科学技术学院, 北京 102206
金娜(1993-),女,北京人,硕士研究生,从事中兽医研究。E-mail:jinna15810509246@126.com

收稿日期: 2018-04-11

  网络出版日期: 2018-11-20

基金资助

中兽药(添加剂)及药食同源生物饲料学术创新团队;北京市科技计划课题(D171100002117002,Z171100004517011);公益性行业(农业)科研专项课题(201403051-07);学位点建设-含学位点合格评估-畜牧(专业学位)

Effects of Qicao Extract on Laying Performance, Egg Quality and Cholesterol Metabolism of Laying Hens

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  • Animal Science and Technology College, Beijing University of Agriculture, Beijing 102206, China

Received date: 2018-04-11

  Online published: 2018-11-20

摘要

本试验旨在研究芪草提取物对蛋鸡产蛋性能、蛋品质及胆固醇代谢的影响。试验选用3 360只45周龄的大午金凤蛋鸡,随机分成2个组,每组12个重复,每个重复140只鸡。对照组饲喂基础饲粮,试验组在基础饲粮中添加400 mg/kg的芪草提取物。试验期12周。结果表明:1)试验第8、12周,试验组蛋鸡的产蛋率、料蛋比显著高于对照组(P<0.05)。2)试验第8、12周,试验组鸡蛋的蛋白高度、哈氏单位均显著高于对照组(P<0.05);试验第12周,试验组鸡蛋的蛋壳强度、蛋壳厚度均显著高于对照组(P<0.05)。3)试验第12周,试验组蛋鸡的血清总胆固醇含量显著低于对照组(P<0.05),试验组蛋鸡的肝脏中3-羟-3-甲基戊二酸单酰辅酶A还原酶(HMGR)和卵巢中极低密度脂蛋白受体(VLDLR)基因表达水平显著低于对照组(P<0.05)。4)试验第4~12周,试验组鸡蛋的蛋黄胆固醇含量逐渐降低;试验第12周,试验组鸡蛋的蛋黄胆固醇含量显著低于对照组(P<0.05)。由此可见,饲粮中添加芪草提取物能提高蛋鸡的产蛋性能,改善鸡蛋品质,可通过调节血清中脂肪代谢指标和抑制HMGRVLDLR基因表达降低鸡蛋蛋黄胆固醇含量。

本文引用格式

金娜, 姜晓茜, 史雅然, 刘艺林, 邹闻书, 刘凤华 . 芪草提取物对蛋鸡产蛋性能、蛋品质及胆固醇代谢的影响[J]. 动物营养学报, 2018 , 30(11) : 4611 -4618 . DOI: 10.3969/j.issn.1006-267x.2018.11.037

Abstract

This experiment was conducted to investigate the effects of Qicao extract on laying performance, egg quality and cholesterol metabolism of laying hens. A total of 3 360 Dawu Jinfeng laying hens aged at 45 weeks were randomly divided into 2 groups with 12 replicates per group and 140 hens per replicate. Hens in the control group were fed a basal diet, and the others in the experimental group were fed the basal diet supplemented with 400 mg/kg Qicao extract. The experiment lasted for 12 weeks. The results showed as follows:1) on weeks 8 and 12 of the experiment, the laying rate and the ratio of feed to egg of laying hens in experimental group were significantly higher than those in the control group (P<0.05). 2) On weeks 8 and 12 of the experiment, the albumen height and Haugh unit of egg in experimental group were significantly higher than those in the control group (P<0.05); on week 12 of the experiment, the eggshell strength and eggshell thickness of egg in experimental group were significantly higher than those in the control group (P<0.05). 3) On week 12 of the experiment, the serum total cholesterol content of laying hens in experimental group was significantly lower than that in the control group (P<0.05), the gene expression levels of 3-hydroxy-3methylglutary CoA reductase (HMGR) in liver and low density lipoprotein receptor (VLDLR) in ovary of laying hens in experimental group were significantly lower than those in the control group (P<0.05). 4) On weeks 4 to 12 of the experiment, the yolk cholesterol content of egg in experimental group was gradually decreased; on week 12 of the experiment, the yolk cholesterol content of egg in experimental group was significantly lower than that in the control group (P<0.05). In conclusion, dietary supplemented Qicao extract can increase the laying performance and egg quality of laying hens, and decrease the yolk cholesterol content of egg by regulating the fat metabolism indices in serum and inhibiting the expression of HMGR and VLDLR genes.

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