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

发布时间：2018-07-04 21:06

本文选题：有机微量元素 + 蛋鸡　；参考：《动物营养学报》2017年07期

【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。
[Abstract]:The aim of this study was to investigate the effects of the combined use of small peptide chelate iron, copper, manganese, zinc and nanometer selenium on the performance and serum antioxidant index of laying hens. Effect of trace element content in egg yolk and effect of trace element emission reduction. 225 healthy Hailan brown shell laying hens aged 50 weeks with similar body weight were randomly divided into 5 groups with 9 replicates in each group. In the basic diet, inorganic trace elements of 6 mg/kg, 75 mg/kg, 60 mg/kg, zinc, 60 mg/kg, 60 mg/kg, manganese, 0. 3 mg/kg selenium were added to the diet. The test group was 70%, 60%, and 50%. The amount of trace elements added in the test group was 70%, 60%, 50%, and the amount of trace elements was 70%, 60%, 50%, 40%, respectively. The pre-test period was 10 days and the positive test period was 42 days. The results showed that the ratio of egg laying was significantly increased (P0.05), and the ratio of feed to egg was significantly decreased (P0.05). There was no significant difference in egg quality among the groups (P0.05). 70% of the groups significantly increased the serum glutathione peroxidation compared with the control group (P0.05). The activity of GSH-Px (P0.05) and the serum total antioxidant capacity (T-AOC) were significantly increased by 70% (P0.05) and 60% (P0.05) respectively. There was no significant difference in manganese and iron content (P0.05), the zinc content of egg yolk was significantly increased in 60% of the units compared with no units (P0.05), while the zinc content of egg yolk (P0.05) was significantly increased in 50% and 40% units (P0.05), and the content of selenium (P0.05) decreased significantly in the feces of the units (P0.05). The content of zinc was significantly lower than that of no unit (P0.05). In order to ensure the normal production and physiological function of laying hens, the effect of adding small peptide chelate iron, copper, manganese, zinc and nanometer selenium was better at 5056 weeks old according to the amount of inorganic trace elements added in the conventional premixed feed.
【作者单位】：湖南农业大学动物科学技术学院;湖南畜禽安全生产协同创新中心;湖南三尖农牧有限责任公司;奥格生物技术(上海)有限公司;
【基金】：湖南农业大学产学研基金项目(10045,13098)
【分类号】：S831.5

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