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浙江大学学报(农业与生命科学版)  2022, Vol. 48 Issue (4): 517-524    DOI: 10.3785/j.issn.1008-9209.2021.06.292
动物科学与动物医学     
日粮添加硒代蛋氨酸锌对泌乳盛期奶牛泌乳性能和血浆生化指标的影响
陈一1(),冀飞2,刘建新1,王迪铭1()
1.浙江大学动物科学学院奶业科学研究所,杭州 310058
2.美国金宝动物营养(国际)有限公司,美国 明尼苏达州 伊登普雷里市 55344
Effect of dietary supplementation of Zn- L -selenomethionine on lactation performance and plasma biochemical indexes of dairy cows in peak lactation period
Yi CHEN1(),Fei JI2,Jianxin LIU1,Diming WANG1()
1.Institute of Dairy Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
2.Zinpro Animal Nutrition (International) Inc. , Eden Prairie 55344, Minnesota, USA
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摘要:

本试验旨在研究日粮中添加硒代蛋氨酸锌对泌乳盛期奶牛泌乳性能和代谢状态的影响。选取60头健康的中国荷斯坦经产泌乳盛期奶牛,根据泌乳时间、体质量、胎次和产奶量相近的原则,每4头条件相近的奶牛为一个区组,区组内随机分成4组,每处理组15头奶牛。4个处理组分别为对照组(基础日粮,不添加硒代蛋氨酸锌)和硒代蛋氨酸锌添加组(在基础日粮中分别添加含0.1、0.2、0.3 mg/kg Se的硒代蛋氨酸锌,按干物质量计);预饲期2周,正式试验期12周。结果显示:1)随着硒代蛋氨酸锌添加量的增加,奶牛的奶产量、能量校正乳、乳脂产量、乳蛋白产量、乳糖产量和饲料效率呈线性增加(P<0.01)。2)随着硒代蛋氨酸锌添加量的增加,奶牛乳脂含量、乳糖含量和乳中硒含量呈线性或二次增加,乳蛋白含量呈线性降低(P<0.05)。3)随着硒代蛋氨酸锌添加量的增加,奶牛血浆中谷胱甘肽过氧化物酶活性、过氧化氢酶活性呈线性或二次增加(P<0.05),而血浆中丙二醛含量呈线性或二次降低(P<0.01)。综上所述,日粮中添加硒代蛋氨酸锌能够有效改善泌乳盛期奶牛的生产性能和抗氧化能力,提示来源于硒代蛋氨酸锌的硒能被泌乳奶牛有效利用并发挥其生物学效应,是奶牛日粮的有效硒源。

关键词: 硒代蛋氨酸锌荷斯坦奶牛生产性能泌乳盛期抗氧化能力    
Abstract:

The objective of this study was to investigate the effect of dietary supplementation of Zn-L-selenomethionine (Zn-L-SeMet) on lactation performance and metabolic status of dairy cows at peak lactation period. Sixty multiparous Chinese Holstein dairy cows at peak lactation were selected. The cows were divided into 15 blocks with four cows in each block based on the similarity principles of the lactation time, body mass, parity and milk yield. The four cows in the same block were randomly assigned to four treatments: the control group (fed with basal diet, without supplementing Zn-L-SeMet), and Zn-L-SeMet supplementation groups (supplementing Zn-L-SeMet with 0.1, 0.2, 0.3 mg/kg Se, respectively, which was calculated in dry matter mass). The prefeeding period was two weeks, and the experiment lasted for 12 weeks. The results showed that: 1) the energy corrected milk, milk, milk fat, milk protein, milk lactose yields and feed efficiency of dairy cows increased linearly (P<0.01) as the supplementation of Zn-L-SeMet increased; 2) the milk fat and lactose contents, and Se concentration in milk were improved linearly or quadratically, and the milk protein content was decreased linearly (P<0.05) by administrating increasing amount of Zn-L-SeMet; 3) the activities of glutathione peroxidase and catalase in plasma were improved linearly or quadratically (P<0.05) and malondialdehyde content in plasma was decreased linearly or quadratically (P<0.01) with the increase of Zn-L-SeMet supplementation. The above results demonstrate that dietary supplementation of Zn-L-SeMet can effectively improve the performance and antioxidant capacity of dairy cows during the peak lactation. It is suggested that Se from Zn-L-SeMet can be effectively used by lactating cows, and Zn-L-SeMet is an effective dietary Se source.

Key words: Zn-L-selenomethionine    Holstein dairy cow    production performance    peak lactation period    antioxidant capacity
收稿日期: 2021-06-29 出版日期: 2022-09-03
CLC:  S 823.91  
基金资助: 中央高校基本科研业务费专项资金(2021FZZX001-32)
通讯作者: 王迪铭     E-mail: chenyi1118@zju.edu.cn;wdm@zju.edu.cn
作者简介: 陈一(https://orcid.org/0000-0003-2520-909X),E-mail:chenyi1118@zju.edu.cn
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引用本文:

陈一,冀飞,刘建新,王迪铭. 日粮添加硒代蛋氨酸锌对泌乳盛期奶牛泌乳性能和血浆生化指标的影响[J]. 浙江大学学报(农业与生命科学版), 2022, 48(4): 517-524.

Yi CHEN,Fei JI,Jianxin LIU,Diming WANG. Effect of dietary supplementation of Zn- L -selenomethionine on lactation performance and plasma biochemical indexes of dairy cows in peak lactation period. Journal of Zhejiang University (Agriculture and Life Sciences), 2022, 48(4): 517-524.

链接本文:

https://www.zjujournals.com/agr/CN/10.3785/j.issn.1008-9209.2021.06.292        https://www.zjujournals.com/agr/CN/Y2022/V48/I4/517

组成成分 Ingredient占比 Proportion/%营养成分3)Nutritional component3)水平 Level
青贮玉米 Silage corn20.13粗蛋白 Crude protein/%16.4
苜蓿干草 Alfalfa hay10.85中性洗涤纤维 Neutral detergent fiber/%30.5
燕麦草 Oat grass3.25酸性洗涤纤维 Acid detergent fiber/%17.4
啤酒糟 Brewer’s grains2.19粗灰分 Crude ash/%8.85
玉米粉 Corn flour21.66粗脂肪 Crude fat/%5.47
豆粕 Soybean meal13.19泌乳净能 Lactation net energy/(MJ/kg)7.48
混合发酵饲料1) Mixed fermented feed1)11.18硒 Se/(mg/kg)0.38
棉籽 Cottonseed6.68
糖蜜 Molasses6.49
脂肪粉 Fat powder0.90
碳酸氢钠 NaHCO30.88
石粉 Limestone0.77
预混料2) Premix2)0.47
氯化钠 NaCl0.45
磷酸氢钙 CaHPO40.32
啤酒酵母 Beer yeast0.25
氧化镁 MgO0.18
过瘤胃氨基酸 Rumen bypass amino acids0.16
总计 Total100.00
表1  基础日粮组成及营养水平(干物质基础)

参量

Parameter

Se 添加水平

Supplemental level of Se/(mg/kg)

均值标准误

Standard error

of mean (SEM)

P

P value

00.10.20.3

组间方差分析

Inter-group

variance analysis

线性

Linear

二次

Quadratic

干物质采食量

Dry matter intake/(kg/d)

28.0a27.7a27.9a27.9a0.260.8640.8850.518

奶产量

Milk yield/(kg/d)

41.1b42.0b42.1b43.7a0.37<0.001<0.0010.347

能量矫正乳

Energy corrected milk/(kg/d)

42.5c43.9bc45.2ab45.8a0.60<0.001<0.0010.566

乳脂产量

Milk fat yield/(kg/d)

1.59c1.66bc1.73ab1.74a0.029<0.001<0.0010.264

乳蛋白产量

Milk protein yield/(kg/d)

1.28b1.31ab1.33a1.35a0.0160.0320.0030.708

乳糖产量

Milk lactose yield/(kg/d)

1.96c2.02bc2.05ab2.11a0.0280.002<0.0010.921

饲料效率

Feed efficiency

1.53b1.60ab1.63a1.65a0.0260.006<0.0010.367

体细胞数

Somatic cell count/(103 mL-1)

166.0a130.0bc106.1c153.2ab10.75<0.0010.196<0.001
表2  添加硒代蛋氨酸锌对奶牛生产性能的影响

参量

Parameter

Se 添加水平

Supplemental level of Se/(mg/kg)

均值标准误

SEM

P

P value

00.10.20.3

组间方差分析

Inter-group

variance analysis

线性

Linear

二次

Quadratic

乳脂

Milk fat/%

3.96b4.10ab4.19a4.08ab0.0510.0210.0580.017

乳蛋白

Milk protein/%

3.21a3.20ab3.21a3.14b0.0190.0230.0210.085

乳糖

Milk lactose/%

4.83b4.93a4.91a4.90a0.014<0.0010.006<0.001

尿素氮

Milk urea nitrogen/(mg/dL)

14.9b15.0ab15.6a14.8b0.220.0360.8860.033
表3  添加硒代蛋氨酸锌对奶牛乳成分的影响

参量

Parameter

Se 添加水平

Supplemental level of Se/(mg/kg)

均值标准误

SEM

P

P value

00.10.20.3

组间方差分析

Inter-group

variance analysis

线性

Linear

二次

Quadratic

血糖

Plasma glucose/(μmol/L)

3.723.723.693.720.0370.9270.8140.811

三酰甘油

Triacylglycerol/(mmol/L)

0.1160.1140.1090.1170.0050.7080.9370.316

游离脂肪酸

Non-esterified fatty acid/(μmol/L)

122.5121.9128.1118.94.660.5670.8260.355

谷草转氨酶

Aspartate aminotransferase/(U/L)

92.5100.190.291.04.540.4820.4580.400

谷丙转氨酶

Alanine aminotransferase/(U/L)

32.734.833.531.71.100.2380.3910.077

碱性磷酸酶

Alkaline phosphatase/(U/L)

38.941.938.137.93.640.1980.6680.655

总蛋白

Total protein/(g/L)

71.970.571.269.01.220.3650.1420.730

白蛋白

Albumin/(g/L)

31.732.031.431.70.440.8010.7590.851

尿素氮

Blood urea nitrogen/(mmol/L)

5.014.675.015.000.1370.2230.6380.238

肌酐

Creatinine/(μmol/L)

57.154.358.358.71.600.2160.2340.317

总胆红素

Total bilirubin/%

2.612.602.742.610.0830.6170.7250.490
表4  添加硒代蛋氨酸锌对奶牛血浆生化指标的影响

参量

Parameter

Se 添加水平

Supplemental level of Se/(mg/kg)

均值标准误

SEM

P

P value

00.10.20.3

组间方差分析

Inter-group variance analysis

线性

Linear

二次

Quadratic

总抗氧化能力

Total antioxidant capacity/(U/mL)

2.40a2.40a2.40a2.42a0.0340.9470.7040.667

谷胱甘肽过氧化物酶

Glutathione peroxidase/(U/L)

270.2b301.7a308.9a313.7a6.26<0.0010.0050.224

总超氧化物歧化酶

Total superoxide dismutase/(U/mL)

142.7a141.3a140.3a144.0a3.570.8950.8590.484

过氧化氢酶

Catalase/(U/mL)

85.2c99.0b118.6a116.2a2.25<0.001<0.001<0.001

丙二醛

Malonaldehyde/(nmol/mL)

8.28a6.29b5.32c5.17c0.211<0.001<0.001<0.001
表5  添加硒代蛋氨酸锌对奶牛抗氧化指标的影响

参量

Parameter

Se 添加水平

Supplemental level of Se/(mg/kg)

均值标准误

SEM

P

P value

00.10.20.3

组间方差分析

Inter-group

variance analysis

线性

Linear

二次

Quadratic

乳硒 Milk Se/(μg/L)23.1d23.7c24.1b24.5a0.14<0.001<0.0010.408
血硒 Plasma Se/(μg/L)97.8c102.7c112.4b119.0a2.02<0.001<0.0010.669
乳硒/血硒 (Milk Se/plasma Se)/%24.0a23.2a21.8b20.8b0.00<0.001<0.0010.793
表6  添加硒代蛋氨酸锌对奶牛牛乳和血硒含量的影响
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