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他们的科研为何上演“抓马”剧情
Xin Lang Cai Jing· 2026-02-14 16:39
转自:中国科学报 抓马是个技术活。一上午得抓一群马,马在山上跑,人带着秤满山追。 "马可聪明了,它们没见过秤,害怕,死活不上秤。"中国农业大学教授王勤谈起第三次全国畜禽遗传资 源普查中的抓马经历,哭笑不得。马是敏感的动物,在湖北、云南,王勤和团队为了给马称重,不得不 与它们"斗智斗勇"。 这一真实的抓马现场,恰似她投身马学研究的学术人生——充满了意外转折、艰难破局与不懈坚持 的"抓马"(Drama)剧情。她从零开始构建研究工具,在深山追逐散养的马匹,为一种古老产业寻找现 代价值。在王勤看来,每一次"抓马"不仅是体力的挑战,更是对科研工作者智慧的考验。 从零开始构建研究工具 近年来,由于缺少科研经费支持,国内马学研究人才出现断层,王勤毅然将全部精力投到马学研究上。 缺乏研究工具是王勤团队面临的首个挑战。 "在国外,马的价值高,配套技术非常成熟。"她解释说,"比如动态捕捉系统,国外用多角度摄像头拍 摄马匹运动,一套设备价值一百多万元人民币。"而国内连能准确测量马匹身高的自动化设备都没有。 2021年,第三次全国畜禽遗传资源普查全面启动,王勤负责多个省份的马种资源普查。这项工作让她对 抓马有了全新认识。 即使是简单 ...
奶越贵越好吗?
Xin Lang Cai Jing· 2025-12-19 19:25
Core Viewpoint - The article discusses the diverse range of animal milk products available in the market, highlighting the nutritional similarities and differences among them, as well as consumer preferences based on taste and health benefits [14][19]. Nutritional Comparison - All types of animal milk provide essential nutrients such as proteins, fats, carbohydrates, and minerals, with basic nutritional components being relatively similar across different species [14][15]. - Specific nutritional advantages include higher essential amino acids in goat milk (49%), vitamin C in camel milk, and higher potassium and magnesium in sheep milk [15][19]. - The price of alternative milks like goat, camel, and sheep milk is higher than cow milk due to lower production volumes and higher costs associated with their unique farming conditions [14][15]. Taste and Flavor Characteristics - The flavor of milk is primarily influenced by its fat content, with higher fat levels leading to richer taste profiles [16][17]. - Different types of milk have distinct flavor characteristics: cow milk is mild and creamy, buffalo milk is rich and sweet, goat milk has a unique tangy flavor, and camel milk is slightly salty [17][18]. Health Benefits and Recommendations - Regular consumption of dairy products is linked to lower mortality rates and reduced cardiovascular disease risk, emphasizing the importance of incorporating milk into daily diets [19]. - For individuals with allergies, alternatives like goat, camel, or donkey milk may be suitable substitutes for cow milk [19][20]. - Recommendations for specific demographics include whole milk for children, calcium-rich options for older adults, and fermented dairy for those with lactose intolerance [20]. Consumer Considerations - Consumers should pay attention to the processing methods and ingredient lists of milk products, as "natural active nutrition" is considered the core value of milk [20]. - There is a trend towards choosing low-fat options for weight management, but studies suggest that full-fat dairy does not increase obesity risk in normal-weight individuals [20].