福建农业学报2025，Vol.40Issue(1)：91-98,8.
牛羊早期妊娠诊断技术研究进展
Research Progress on Early Diagnosis of Pregnancy in Cattle and Sheep
摘要
Abstract
In a commercial livestock or dairy farm,the so-called"empty sows"of those female animals failed to conceive in impregnation means economic loss for the business.Being able to accurately detect a pregnancy early,therefore,is indispensable for a timely determination allowing a short calving interval to enhance operational efficiency and profitability.This article reviewed the availability and advancements in the techniques and markers for the diagnosis on cattle and sheep.Published reports on the methodologies,examination time,and test result accuracy on the diagnosis are summarized with comments.For instance,B-ultrasound is commonly applied in clinical practices for 28-35 d pregnancy in the animals.Although relatively reliable results can be expected from the tests,they depend on the frequency and equipment selected as well as the skill of the operator.As a marker,progesterone(P4)is an indicator whose concentration in the animal is measured for the diagnosis.The method required specific testing environment,and consequently,is not popularly employed in the field.The initial fertilization indicator or physiochemical pregnancy signs in impregnated animals are currently detected by using the complex erythrocyte rosette test.Hence,not until a simple method is developed can a wide application based on the approach be realized.In theory,the interferon-stimulated genes and exosomal miRNAs may be useful for the diagnosis,but no testing technology has yet been established.And the commercially available PAG test kits for early-stage pregnancy or late-stage embryo loss are cost prohibitive for average farmers at present.By briefly describing the basics and presenting the pros and cons of various available devices and methods,this article provides a concise reference for the livestock ranchers in their decision-making and for the animal husbandry scientists in directing their efforts to develop a reliable and affordable means of fertilization detection in cattle and sheep.关键词
牛/羊/妊娠诊断/miRNAs/PAGsKey words
cattle/sheep/pregnancy diagnosis/miRNAs/PAGs分类
农业科技引用本文复制引用
张振良,吕占民,卢守亮,卢春霞,倪建宏,刘长彬..牛羊早期妊娠诊断技术研究进展[J].福建农业学报,2025,40(1):91-98,8.基金项目
国家自然科学基金项目(31860647) （31860647）
新疆生产建设兵团科技合作计划项目(2023AB009-01) （2023AB009-01）
新疆生产建设兵团科技创新人才计划项目(2020CB022、2022CB012) （2020CB022、2022CB012）
新疆生产建设兵团农业GG项目(2023-2025) （2023-2025）
新疆农垦科学院院级项目(2024YJQN13) （2024YJQN13）
