动物营养学报 >

2018 , Vol. 30 >Issue 2: 589 - 596

DOI: https://doi.org/10.3969/j.issn.1006-267x.2018.02.023

反刍动物营养 Ruminant nutrition

短期试验条件下不同硒源对泌乳奶牛血浆和乳中硒含量及血清抗氧化能力的影响

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  • 1. 中国农业科学院北京畜牧兽医研究所, 动物营养学国家重点实验室, 北京 100193;
    2. 中国饲料工业协会, 北京 100125;
    3. 中国农业科学院与世界农用林业中心农用林业与可持续畜牧业联合实验室, 北京 100193;
    4. 湖南畜产品质量安全协同创新中心, 长沙 410128
孙玲玲(1993-),女,黑龙江哈尔滨人,硕士研究生,研究方向为反刍动物营养与饲料。E-mail:sunlingling114289@163.com

收稿日期: 2017-08-07

  网络出版日期: 2018-02-02

基金资助

中国农业科学院科技创新工程协同创新任务（ASTIP-IAS07，CAAS-XTCX2016011-01）；北京市奶牛产业创新团队（BAIC06-2017）；农产品质量安全监管（饲料）项目

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Effects of Different Selenium Sources on Selenium Content in Plasma and Milk, and Serum Antioxidant Capacity of Lactating Dairy Cows under Short-Term Trial Conditions

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  • 1. State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China;
    2. China Feed Industry Association, Beijing 100125, China;
    3. Chinese Academy of Agricultural Sciences and World Agroforestry Center Joint Laboratory on Agroforestry and Sustainable Animal Husbandry, Beijing 100193, China;
    4. Hunan Co-Innovation Center of Animal Production Safety, Changsha 410128, China

Received date: 2017-08-07

  Online published: 2018-02-02

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摘要

本试验旨在短期试验条件下，比较蛋氨酸硒羟基类似物（HMSeBA）和亚硒酸钠（sodium selenite，SS）对泌乳奶牛血浆和乳中硒含量及血清抗氧化能力的影响。采用完全随机试验设计，选取8头胎次、泌乳天数及产奶量相近的中国荷斯坦奶牛，随机分为2组，分别在基础饲粮中添加0.3 mg/kg DM的HMSeBA及SS，每组4头。预试期2周，正试期4周。结果表明：1）HMSeBA组奶牛的乳脂率（P=0.060 3）及乳脂产量（P=0.055 2）与SS组相比有降低的趋势，干物质采食量、产奶量及其他乳成分产量和比率未受硒源的显著影响（P>0.05）；2）HMSeBA组奶牛血浆和乳中硒含量均显著高于SS组（P<0.05）；3）血清谷胱甘肽过氧化物酶活性未受硒源的显著影响（P>0.05），但HMSeBA组血清总抗氧化能力、超氧化物歧化酶活性显著高于SS组（P<0.05），血清丙二醛含量显著低于SS组（P<0.05）。综上所述，在短期试验条件下，饲粮中添加0.3 mg/kg DM的HMSeBA相比于同等剂量的SS可显著提高奶牛血浆和乳中的硒含量及抗氧化能力。

关键词： 蛋氨酸硒羟基类似物; 亚硒酸钠; 奶牛; 乳中硒含量; 血清抗氧化能力

本文引用格式

孙玲玲, 王坤, 高胜涛, 刘士杰, 卜登攀 . 短期试验条件下不同硒源对泌乳奶牛血浆和乳中硒含量及血清抗氧化能力的影响[J]. 动物营养学报, 2018 , 30(2) : 589 -596 . DOI: 10.3969/j.issn.1006-267x.2018.02.023

Abstract

The objective of this trial was to compare the effects of 2-hydroxy-4-methylselenobutanoic acid (HMSeBA) and sodium selenite (SS) on selenium content in plasma and milk, and serum antioxidant capacity of lactating dairy cows under short-term trail conditions. Eight Holstein dairy cows, similarly in parity, days in milk and milk yield, were randomly assigned to 1 of 2 groups with 4 cows per group according to a completely randomized design, and 0.3 mg/kg DM HMSeBA and SS were supplemented in diets in different groups, respectively. The pre-trial lasted for 2 weeks and the trial lasted 4 weeks. The results showed as follows:1) milk fat percentage(P=0.060 3)and milk fat yield(P=0.055 2)of dairy cows in HMSeBA group tended to be higher than those in SS group, and dry matter intake, milk yield and other milk compositions were not significantly affected by selenium sources (P>0.05); 2) selenium content in plasma and milk of dairy cows in HMSeBA group were significantly higher than those in SS group (P<0.05); 3) serum glutathione peroxidase activity was not significantly affected by selenium sources (P>0.05), however, serum total antioxidant capacity and superoxide dismutase activity in HMSeBA group were significantly higher than those in SS group (P<0.05), and serum malondialdehyde content was significantly decreased (P<0.05). In conclusion, under short-term trail conditions, dietary supplemented with 0.3 mg/kg DM HMSeBA significantly increases selenium content in plasma and milk, and serum antioxidant capacity compared with the supplementation of the same level of SS.

Key words： 2-hydroxy-4-methylselenobutanoic acid; sodium selenite; dairy cow; selenium content in milk; serum antioxidant capacity

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