[1]吴天佑,吴洁,王文丹,等.过瘤胃γ-氨基丁酸对热应激奶牛生产性能、营养物质表观消化率及粪便菌群结构的影响[J].江苏农业学报,2025,(08):1566-1574.[doi:doi:10.3969/j.issn.1000-4440.2025.08.013]
　WU Tianyou,WU Jie,WANG Wendan,et al.Effects of rumen-protected γ-aminobutyric acid on production performance, apparent nutrient digestibility, and fecal microbiota structure of heat-stressed dairy cows[J].,2025,(08):1566-1574.[doi:doi:10.3969/j.issn.1000-4440.2025.08.013]
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过瘤胃γ-氨基丁酸对热应激奶牛生产性能、营养物质表观消化率及粪便菌群结构的影响()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2025年08期
页码:
1566-1574
栏目:
畜牧兽医·水产养殖·益虫饲养
出版日期:
2025-08-31

文章信息/Info

Title:
Effects of rumen-protected γ-aminobutyric acid on production performance, apparent nutrient digestibility, and fecal microbiota structure of heat-stressed dairy cows
作者:
吴天佑1; 2; 吴洁1; 2; 王文丹1; 2; 韦子海1; 2; 张幸怡1; 2; 林淼3; 苏衍菁1; 2; 3
(1.光明牧业有限公司,上海201103；2.农业农村部南方奶牛遗传改良重点实验室,上海201103；3.扬州大学动物科学与技术学院,江苏扬州225009)
Author(s):
WU Tianyou1; 2; WU Jie1; 2; WANG Wendan1; 2; WEI Zihai1; 2; ZHANG Xingyi1; 2; LIN Miao3; SU Yanjing1; 2; 3
(1.Bright Farming Co., Ltd., Shanghai 201103, China;2.Key Laboratory of Southern Dairy Cow Genetic Improvement, Ministry of Agriculture and Rural Affairs, Shanghai 201103, China;3.College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China)
关键词:
奶牛; 热应激; 过瘤胃γ-氨基丁酸; 生产性能; 消化率; 微生物多样性
Keywords:
dairy cows; heat stress; rumen-protected γ-aminobutyric acid; production performance; digestibility; microbial diversity
分类号:
S823.4+2
DOI:
doi:10.3969/j.issn.1000-4440.2025.08.013
文献标志码:
A
摘要:
为了探明在奶牛日粮中添加过瘤胃γ-氨基丁酸对热应激奶牛生产性能、营养物质表观消化率以及粪便菌群结构的影响,本研究于2022年7-8月在上海星火奶牛二场选取10头经产荷斯坦奶牛,根据产奶量与泌乳天数均分为对照组和试验组。对照组奶牛饲喂牧场常规日粮,试验组在常规日粮中每头奶牛每天添加5 g过瘤胃γ-氨基丁酸,试验期共48 d。结果显示,与对照组相比,试验组奶牛干物质采食量以及中性洗涤纤维、酸性洗涤纤维表观消化率有增加的趋势(0.05≤P＜0.10)；试验组奶牛的产奶量显著提高(P＜0.05),乳中尿素氮含量有下降的趋势(0.05≤P＜0.10)；试验组奶牛粪便微生物的丰富度未显著改变(P＞0.05),但多样性显著增加(P＜0.05)；在门水平上拟杆菌门(Bacteroidetes)细菌、广古菌门(Euryarchaeota)细菌、盐杆菌门(Halobacterota)细菌的相对丰度显著增加(P＜0.05),蓝藻菌门(Cyanobacteria)细菌的相对丰度显著降低(P＜0.05)；在属水平上克里斯滕森菌科_R-7群属(Christensenellaceae_R-7_group)细菌的相对丰度显著增加(P＜0.05),理研菌科RC9_肠道群属(Rikenellaceae_RC9_gut_group)细菌和双歧杆菌属(Bifidobacterium)细菌相对丰度有增加的趋势(0.05≤P＜0.10),而密螺旋体属(Treponema)细菌相对丰度具有降低的趋势(0.05≤P＜0.10)。由此可见,在奶牛日粮中添加适量过瘤胃γ-氨基丁酸有助于提高热应激奶牛产奶量,并改善肠道微生物群落结构。
Abstract:
To investigate the effects of adding rumen-protected γ-aminobutyric acid to the diet of dairy cows on the production performance, apparent digestibility of nutrients, and fecal microbiota structure of heat-stressed dairy cows, this study selected ten multiparous Holstein dairy cows at Shanghai Xinghuo No.2 Dairy Farm from July to August 2022. The cows were equally divided into a control group and an experimental group based on milk yield and lactation days. Cows in the control group were fed the conventional diet of the farm, while those in the experimental group were fed the conventional diet supplemented with 5 g/d per head of rumen-protected γ-aminobutyric acid, with a total experimental period of 48 days. The results showed that compared with the control group, the experimental group demonstrated a tendency toward increased dry matter intake and apparent digestibility of neutral detergent fiber and acid detergent fiber (0.05≤P＜0.10). The milk yield of cows in the experimental group was significantly increased (P＜0.05), and the milk urea nitrogen content tended to decrease (0.05≤P＜0.10). The richness of fecal microorganisms in the experimental group did not change significantly (P＞0.05), but the diversity was significantly increased (P＜0.05). At the phylum level, the relative abundances of Bacteroidetes, Euryarchaeota, and Halobacterota were significantly increased (P＜0.05), while the relative abundance of Cyanobacteria was significantly decreased (P＜0.05). At the genus level, the relative abundance of Christensenellaceae_R-7_group was significantly increased (P＜0.05); the relative abundances of Rikenellaceae_RC9_gut_group and Bifidobacterium tended to increase (0.05≤P＜0.10); and the relative abundance of Treponema tended to decrease (0.05≤P＜0.10). It can be concluded that adding an appropriate amount of rumen-protected γ-aminobutyric acid to the diet of dairy cows is beneficial for enhancing milk yield of heat-stressed dairy cows and improving the intestinal microbial community structure.

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备注/Memo

备注/Memo:
收稿日期：2025-01-20基金项目：上海奶牛绿色健康养殖关键技术研究与集成应用项目[沪农科推字(2022)第2-1号]；上海市科学技术委员会2021年度“科技创新行动计划”启明星项目(21QB1400300)作者简介：吴天佑(1990-),男,湖北黄冈人,硕士,主要从事饲料研发工作。(E-mail)1253799450@qq.com通讯作者：苏衍菁,(E-mail)suyanjing@brightdairy.com
更新日期/Last Update: 2025-09-23