中国农业科学 ›› 2025, Vol. 58 ›› Issue (14): 2904-2913.doi: 10.3864/j.issn.0578-1752.2025.14.014

• 畜牧·兽医 • 上一篇    下一篇

基于GreenFeed系统研究绿原酸对泌乳中后期奶牛瘤胃甲烷排放、发酵参数和生产性能的影响

李晓鹏1,2(), 刘云龙1, 崔甲军1,3, 屠焰1,*(), 蒋林树2,*(), 成述儒3   

  1. 1 农业农村部饲料生物技术重点实验室/中国农业科学院饲料研究所,北京 100081
    2 奶牛营养学北京市重点实验室/北京农学院动物科学技术学院,北京 102206
    3 甘肃农业大学动物科技学院,兰州 730000
  • 收稿日期:2024-12-24 接受日期:2025-06-19 出版日期:2025-07-17 发布日期:2025-07-17
  • 通信作者:
    屠焰,E-mail:
    蒋林树,E-mail:
  • 联系方式: 李晓鹏,E-mail:lxpydhyq@126.com。
  • 基金资助:
    现代农业产业技术体系北京市创新团队(BAIC05)

Effects of Chlorogenic Acid on Rumen Methane Emission, Fermentation Parameters and Performance of Late Lactating Cows Based on the GreenFeed System

LI XiaoPeng1,2(), LIU YunLong1, CUI JiaJun1,3, TU Yan1,*(), JIANG LinShu2,*(), CHENG ShuRu3   

  1. 1 Key Laboratory of Feed Biotechnology, Ministry of Agriculture and Rural Affairs/Feed Research Institute, Chinese Academy of Agricultural Sciences, Beijing 100081
    2 Beijing Key Laboratory of Dairy Cow Nutrition/College of Animal Science and Technology, Beijing Agricultural University, Beijing 102206
    3 College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730000
  • Received:2024-12-24 Accepted:2025-06-19 Published:2025-07-17 Online:2025-07-17

摘要:

【目的】反刍动物的CH4排放在畜牧业温室气体排放中占据很大部分,采取一些适宜的措施减少当前生产中的CH4排放对畜牧业低碳发展具有重要意义。通过GreenFeed系统实测泌乳中后期奶牛甲烷(CH4)排放量,探究绿原酸对泌乳牛瘤胃CH4排放、发酵参数和生产性能的影响,为绿原酸作为反刍动物CH4排放控制的添加剂应用于生产实践提供理论依据。【方法】采用单因素完全随机试验设计,选取30头泌乳期(泌乳天数为((170.07±57.81)d)的荷斯坦奶牛,将其分为两组,每组15个重复,每个重复为一头奶牛。其中对照组饲喂基础饲粮,处理组在基础饲粮的基础上添加20 g/(d·头)绿原酸。试验期为10周,其中预试期2周,正试期8周。试验期内采用GreenFeed系统检测泌乳牛的CH4排放量,在试验最后1周采集瘤胃液、血样、奶样和粪样用于后续指标检测,并通过试验期甲烷排放量的平均值和产奶指标计算甲烷排放强度。【结果】与对照组相比,(1)绿原酸降低了泌乳牛的CH4日排放量和单位产奶量的CH4排放强度(P<0.05);对产奶量、4%乳脂校正乳(4%FCM)和能量校正乳(ECM)没有显著影响(P>0.05),对乳脂率、乳糖率、乳尿素氮(MUN)、体细胞数(SCC)和乳中固形物也没有显著影响(P>0.05),提高了乳蛋白的比例(P<0.05),降低了乳尿素氮(MUN)的含量(P<0.01);(2)绿原酸对泌乳牛瘤胃pH、氨态氮(NH3-N)和总挥发酸(TVFA)浓度没有显著影响(P>0.05),但提高了丙酸比例(P<0.05),降低了丁酸比例(P<0.01)和乙酸/丙酸比值(P<0.05);(3)绿原酸显著降低了泌乳牛血清中总胆固醇(TC)和尿素氮(BUN)的含量(P<0.01),增加了血清中总蛋白(TP,P<0.01)、白蛋白(ALB,P<0.05)和球蛋白的含量(GLB,P<0.01);(4)绿原酸对泌乳牛营养物质表观消化率没有显著影响(P>0.05)。【结论】在泌乳牛饲粮中添加绿原酸可以通过调节瘤胃发酵模式降低CH4排放,还可能通过调节蛋白质代谢、脂质代谢及免疫功能改善其生产性能。

关键词: 绿原酸, 甲烷, 泌乳牛, 生产性能, GreenFeed系统

Abstract:

【Objective】Methane (CH4) emission from ruminants constitutes a significant portion of greenhouse gas emission from the livestock industry. Reducing CH4 emissions is essential for achieving low-carbon development in livestock production. This experiment aimed to measure CH4 emissions from late lactating cows using the GreenFeed system, and to evaluate the effects of chlorogenic acid supplementation on rumen CH4 emissions, fermentation parameters, and production performance of lactating cows, so as to provide a theoretical basis for the application of chlorogenic acid as a feed additive for CH4 emission mitigation in practical production settings. 【Method】A one-way completely randomized experimental design was used to select 30 lactating Holstein cows ((170.07 ± 57.81) days in lactation). The cows were divided into two groups, each with 15 replicates (one cow per replicate). The control group received a basal diet, while the treatment group was supplemented with 20 g of chlorogenic acid per cow per day in addition to the basal diet. The experiment lasted 10 weeks, including a 2-week pre-trial period and an 8-week main trial period. CH4 emissions were measured using the GreenFeed system during the test period. Samples of rumen fluid, blood, milk, and feces were collected during the final week for subsequent analysis, and CH4 emission intensity was calculated based on the average CH4 emissions and milk production during trial period. 【Result】Compared with the control group, (1) Chlorogenic acid supplementation significantly reduced daily CH4 emissions and CH4 emission intensity relative to milk production (P<0.05).Chlorogenic acid had no significant effects on milk yield, 4% fat-corrected milk (4% FCM), energy-corrected milk (ECM), milk fat percentage, lactose percentage, somatic cell count (SCC), or milk solids (P>0.05). However, it increased milk protein content (P<0.05) and decreased milk urea nitrogen (MUN) levels (P<0.01).(2) Chlorogenic acid did not significantly affect rumen pH, ammonia nitrogen (NH3-N), or total volatile fatty acid (TVFA) concentrations (P>0.05). However, it increased the proportion of propionic acid (P<0.05), decreased the proportion of butyric acid (P<0.01), and lowered the acetic acid-to-propionic acid ratio (P<0.05).(3) Chlorogenic acid significantly reduced serum total cholesterol (TC) and blood urea nitrogen (BUN) levels (P<0.01), while it increased serum total protein (TP, P<0.01), albumin (ALB, P<0.05), and globulin (GLB, P<0.01). (4) Chlorogenic acid had no significant effect on the apparent digestibility of nutrients (P>0.05).【Conclusion】Supplementing lactating dairy cows’ diets with chlorogenic acid could reduce CH4 emissions by modulating rumen fermentation patterns. Additionally, it improved production performance by influencing protein metabolism, lipid metabolism, and immune function.

Key words: chlorogenic acid, methane, lactating cows, production performance, GreenFeed system