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关于举办第九届“奶牛营养与牛奶质量”国际研讨会及征文的通知（首轮）
2024-10-3016

“奶牛营养与牛奶质量”国际研讨会自2009年举办第一届以来，已经坚持15年连续举办8届，来自美国、荷兰和新西兰等13个奶业发达国家的国际知名专家作大会报告200余次，现场参会人数达4000余人，已经成为掌握国际奶业科技最新进展、加强国内外奶业交流和推动中外奶业科技合作的重要科学平台。当前，国际奶业面临巨大挑战。发展新质生产力，推动奶业稳定健康发展至关重要。为了交流国内外奶业科学理论与技术的最新进展，共商全球奶业高质量发展大计，中国农业科学院北京畜牧兽医研究所等单位拟定于2025年5月9-11日举办第九届“奶牛营养与牛奶质量”国际研讨会。现将有关事宜通知如下：

一、会议主题

构建可持续发展的奶业

二、会议时间

2025年5月9-11日 （周五-周日）

三、会议地点

北京友谊宾馆（北京市海淀区中关村南大街1号，电话：010-68498888）

四、组织机构

主办单位：
中国农业科学院北京畜牧兽医研究所
中国奶业协会
美国奶业科学学会

新西兰初级产业部

支持单位：
畜禽营养与饲养全国重点实验室
国家奶业国际联合研究中心
农业农村部奶及奶制品质量安全控制重点实验室
农业农村部奶及奶制品质量检验测试中心（北京）
农业农村部奶产品质量安全风险评估实验室（北京）
国家奶牛产业技术体系
国家奶业科技创新联盟
中优乳奶业研究院（天津）有限公司

国家市场监督管理总局重点实验室（乳品质量数智监控技术）

五、会议日程

六、“研究生论坛”论文征集要求

1. 本次征文包括奶畜营养调控、饲草料生产与调制、瘤胃微生物学、乳腺细胞生物学、牛奶检测技术、奶产品风险评估、奶产品加工、奶业消费以及奶产品营养功能评价等领域具有创新性的研究论文；

2. 征文将由学术委员会专家集中评审，对符合要求的论文将安排口头报告或展板展示交流，分别设优秀论文一、二、三等奖，并发放奖金；

3. 论文征集仅限在站博士后、在读博士和硕士研究生，论文请发送至会议邮箱，字数限800字以内，语言为英语，参考附件2；

4. 论文投稿截止日期为 2025 年 3 月 1 日。

七、 会议费用

注册费：1500元/人。

参会回执（见附件1）请发送至会议邮箱jiaqiwang@vip.163.com。

住宿与交通费用自理，餐费由会议统一安排。

八、会议赞助

欢迎企业积极参与会议，具体赞助事宜，请与会务人员联系。

九、会务联系方式

联系人：赵圣国     010-62816069

地 址：北京市海淀区圆明园西路2号牧医3号楼

附件1：

第九届“奶牛营养与牛奶质量”国际研讨会参会回执

附件2
会议论文投稿说明
Instructions to Submit Short Communications

The 9th International Symposium on Dairy Cow Nutrition and Milk Quality

Graduate Student Seminar

May 9-11, 2025, Beijing, China

Deadline of submission: March 1, 2025
Submissions send to: jiaqiwang@vip.163.com
Short communications are invited from graduate students to report their research. The Scientific Committee of the Symposium will review the manuscripts and those accepted will be presented as oral presentations in the Graduate Student Seminars. The entire submission should not exceed 1000 words. The whole paper includes introduction, Materials and Methods, Results, Conclusion, and References. The Introduction should introduce only background information pertinent to the study and the objective(s). The Materials and Methods section primary describes the experimental design and major methods. The Results section should describe the main findings and brief interpretation of the results. Figures and tables are allowed in this section. Numeric results should be supported by proper statistical analysis and indicates in the figures or tables. The Conclusion section should report the main conclusion(s) and implication of the findings. Do not repeat the results. No more than 10 references can be cited in the communication and listed in the References section. Manuscripts should be prepared in Microsoft Words, typed in double-space. Please use Times New Roman font at 12 points. Special characters (e.g., Greek, math, symbols) should be inserted using the symbols palette available in this font.

论文回执表：(请投稿时附在稿件中)

样文格式：
Response of milk fatty acid profile to different forage sources indiets

M. Zhao, D.P. Bu, Y.D. Zhang, X.Q. Zhou, P. Zhang. Y.J. Xu and J.Q. Wang*

State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, P.R. China

*Correspondence: wangjiaqi@caas.cn
Introduction

The profile of fatty acids (FA) is one of the most important indicators to evaluate the dairy milk nutritional value, which lies in the content and form of unsaturated fatty acids (Bauman et al., 2010). Due to the large amount of unsaturated fatty acid (UFA), dairy milk fat is benefit for human health by preventing many illnesses including cardiopathy and carcinogenesis（Bauman et al., 2010; Elwood et al., 2010).Therefore, the manipulation of milk FA profile has been the focus of extensive research in recent years.The profile of milk FA is determined by many factors, while the forage type is a key influencing factor. (Benchaaret al., 2007;Shingfieldet al., 2005;Khorasaniet al., 2001).The purpose of this study was to evaluate the response of milk fatty acid profile to diets with different forage sources.

Materials and methods

Thirty-two primiparous Holstein dairy cows with similar production performance (55±15 DIM and 33.22±4.57 kg of milk/d) were divided into 2 groups randomly according to the forage sources (MF group, alfalfa and corn silage; CS group, corn straw). The basal diets in two groups were the same（F:C=65:35, DM basis）.Basal diets were formulated to meet the nutrient requirement of cows producing 32 kg of 3.5% FCM/d according to the Feeding Standards of Dairy Cattle, China NongYe HangYe Boaozhun/Tuijian-34 (China, NY/t34, 2004). Cows were gradually adjusted to the experimental diets in a 14-d period. The duration of the experiment was 91-d.Cows were fed total mixed ration(TMR) using automatic feeding system. Animal health condition and milk yieldwas monitored and recorded each day during the whole experimental period. Dry matter(DM) contentof TMR and orts were collected weekly and milk samples were collected every other day. Milk fatty acids were analyzed by Gas Chromatography (Agilent Technologies, Hewlett Packard Co., Avondale, PA) fitted with a flame-ionization detector(Khas-Erdene et al., 2010).

Data were analyzed using GLM model of SAS 9.1. Significance level was declared at P<0.01.

Results

The resultsrevealed that different forage sources had significant effect on the dry matter intake (DMI), milk yield, milk fat yield, milk protein percentage and milk protein yield between two groups(P<0.01)(Table 1).

Compared with group CS, the profile of milk fatty acids revealed that group MF had higher proportion of saturated fatty acid(SFA) and short and medium chain fatty acid(SMCFA) (P<0.01). The proportion of unsaturated fatty acid(UFA) and monounsaturated fatty acid(MUFA) of group CS is higher than group MF(P<0.01).(Table 2)

Table 1. Effect of different forages on milk composition
1Cows were fed a basal diet supplemented with either alfalfa and corn silage(MF) or corn straw(CS) as forage source.
2DMI=Dry matter intake.
3SEM= Standard error of least squares of means.

A.BExpressed as significant level, P<0.01.

Table2. Effect of different forage types on milk fatty acid (FA) composition(g/100g FA)

1Cows were fed a basal diet supplemented with either alfalfa and corn silage(MF) or corn straw(CS) as forage source.

2Expressed as different kinds of fatty acid: SFA= Saturated fatty acid; UFA=Unsaturated fatty acid; MUFA=monounsaturated fatty acid; PUFA=polyunsaturated fatty acid; LCFA= Long chain fatty acid; SMCFA=short and medium chain fatty acid.

3SEM=Standard error of least squares of means.

A.BExpressed as significant level, P<0.01.
Conclusions

Forage sources had significant effect on milk fatty acid profile. The diet with corn straw as forage source could significantly increase UFA and LCFA proportion in milk.The high proportions of UFA and LCFA may be due to low milk yield .

References
Bauman, D. E., and A. L. Lock. 2010. Milk fatty acid composition:Challenges and opportunities related to human health.26th World Buiatrics Congr., 278–289.
Elwood, P. C., J. E. Pickering, D. I. Givens, and J. E. Gallacher.2010. The consumption of milk and dairy foods and the incidence ofvascular disease and diabetes: An overview of the evidence. Lipids.45:925–939.
Benchaar C, Petit HV, Berthiaume R, Ouellet DR, Chiquette J, Chouinard PY. 2007. Effects of essential oils on digestion, ruminal fermentation, rumen microbial populations, milk production, and milk composition in dairy cows fed alfalfa silage or corn silage. J. Dairy Sci. 90:886–897.
KJ Shingfield, CK Reynolds, B Lupoli, V Toivonen. 2005. Effect of forage type and proportion of concentrate in the diet on milk fatty acid composition in cows given sunflower oil and fish oil. Anim Sci. 80:225–238.
Khorasani, G. R., Okine, E. K., Kennelly, J. J. 2001. Effeets of forage source and amount of coneentrate on rumen and intestinal digestion of nutrientsin late-lactation cow. J Dairy Sci. 184: 1156-1165.
Khas-Erdene, Wang J Q, Bu D P, Wang L, Drackley J K, Liu Q S, Yang G, Wei H Y, and Zhou L Y. 2010. Short communication: Responses to increasing amounts of free alpha-linolenic acid infused into the duodenum of lactating dairy cows. J Dairy Sci. 93(4):1677-1684.

(来源：奶业创新团队)

编辑：范云琳
校对：张　芳
审核：邢海云

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