| 有机微量元素对蛋鸡生产性能、血清抗氧化指标、蛋黄中微量元素含量及微量元素减排效果的影响 |
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| 引用本文： | 曲湘勇,彭灿阳,蔡超,陈彩,曹冬梅,孙安权.有机微量元素对蛋鸡生产性能、血清抗氧化指标、蛋黄中微量元素含量及微量元素减排效果的影响[J].动物营养学报,2017,29(7). |
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| 作者姓名： | 曲湘勇 彭灿阳 蔡超 陈彩 曹冬梅 孙安权 |
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| 作者单位： | 1. 湖南农业大学动物科学技术学院,长沙410128;湖南畜禽安全生产协同创新中心,长沙410128;2. 湖南三尖农牧有限责任公司,常德,415701;3. 奥格生物技术(上海)有限公司,上海,201203 |
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| 基金项目： | 湖南农业大学产学研基金项目 |
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| 摘 要： | 本试验旨在探讨低于常规预混料中无机微量元素添加量的小肽螯合铁、铜、锰、锌与纳米硒复合使用对蛋鸡生产性能、血清抗氧化指标、蛋黄中微量元素含量以及微量元素减排效果的影响。选择225只50周龄、体重相近、健康的海兰褐壳蛋鸡,随机分为5组,每组5个重复,每个重复9只。在基础饲粮中添加饲料级无机微量元素6 mg/kg铜、75 mg/kg铁、60 mg/kg锌、60 mg/kg锰、0.3 mg/kg硒,为无机组,试验组为70%有机组、60%有机组、50%有机组、40%有机组,其微量元素添加量分别为无机组的70%、60%、50%、40%。预试期10 d,正试期42 d。结果表明:1)与无机组相比,60%有机组可显著提高产蛋率(P0.05),并显著降低料蛋比(P0.05),各组在蛋品质上无显著差异(P0.05)。2)与无机组相比,70%有机组显著提高了血清谷胱甘肽过氧化物酶(GSH-Px)活性(P0.05),有机组均显著提高了血清总抗氧化能力(T-AOC)(P0.05),70%和60%有机组显著降低了血清丙二醛(M DA)含量(P0.05)。3)各组蛋黄中铜、锰、铁含量无显著差异(P0.05);与无机组相比,60%有机组显著提高了蛋黄锌含量(P0.05),而50%与40%有机组在显著提高蛋黄锌含量(P0.05)的同时,显著降低了硒含量(P0.05)。4)有机组粪中铜、锰、锌的含量均显著低于无机组(P0.05)。综合考虑,为保证蛋鸡正常生产和生理功能,在5056周龄,按常规预混料中无机微量元素添加量的60%添加小肽螯合铁、铜、锰、锌与纳米硒效果较好。
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| 关 键 词： | 有机微量元素 蛋鸡 生产性能 抗氧化 减排 |
Effects of Organic Trace Minerals on Performance,Serum Antioxidant Indexes,Trace Mineral Contents in Egg Yolk and Trace Minerals Emission Reduction of Laying Hens |
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| QU Xiangyong,PENG Canyang,CAI Chao,CHEN Cai,CAO Dongmei,SUN Anquan.Effects of Organic Trace Minerals on Performance,Serum Antioxidant Indexes,Trace Mineral Contents in Egg Yolk and Trace Minerals Emission Reduction of Laying Hens[J].Acta Zoonutrimenta Sinica,2017,29(7). |
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| Authors: | QU Xiangyong PENG Canyang CAI Chao CHEN Cai CAO Dongmei SUN Anquan |
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| Abstract: | This study was conducted to investigate the effects of organic trace minerals (oTM) (small peptides chelated iron, copper, manganese, zinc and nano-selenium) at lower dose than normal inorganic trace minerals (iTM) supplemental level of premix on performance, serum antioxidant indexes, trace mineral contents in egg yolk and trace minerals emission reduction of laying hens.A total of 225 healthy Hy-Line brown layers (50 weeks of age) with similar body weight were randomly divided into 5 groups with 5 replicates per group and 9 hens per replicate.Hens in the inorganic group were fed a basal diet supplemented with iTM of iron, copper, manganese, zinc, selenium at 75, 6, 60, 60, 0.3 mg/kg, respectively.Hens in the organic groups were fed the basal diet supplemented with the combination of small peptides chelated iron, copper, manganese, zinc and nano-selenium at 70%, 60%, 50% and 40% levels of iTM, respectively.The pre-experimental period lasted for 10 days, and the experimental period lasted for 42 days.The results showed as follows: 1) compared with inorganic group, laying rate of 60% organic group was significantly increased (P<0.05), while feed to egg ratio was significantly decreased (P<0.05);there was no significant difference in egg quality among groups (P>0.05).2) Compared with inorganic group, serum glutathione peroxidase (GSH-Px) activity in 70% organic group was significantly increased (P<0.05), serum total antioxidant capacity (T-AOC) was significantly increased in all organic groups (P<0.05), and serum content of malondialdehyde (MDA) was significantly decreased in 70% and 60% organic groups (P<0.05).3) There were no significant difference on the contents of copper, manganese and iron in egg yolk (P>0.05);compared with inorganic group, 60% organic group significantly increased zinc content in egg yolk by 22.92% (P<0.05);although 50% and 40% organic groups significantly increased content in egg yolk (P<0.05), selenium content was significantly reduced (P<0.05).4) Compared with inorganic group, copper, manganese, zinc contents in feces were significantly decreased in all organic groups (P<0.05).In conclusion, in order to keep normal physiological function and production of laying hens at 50 to 56 weeks of age, the supplementation of oTM (small peptides chelated iron, copper, manganese, zinc and nano-selenium) at 60% of normal supplemental level premix inorganic minerals is better. |
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| Keywords: | organic trace minerals laying hens performance antioxidant emission reduction |
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