estrous

简明释义

英[ˈestrəs]美[ˈestrəs]

adj. 有发情期特征的，性欲冲动的；动情期的，求偶期的

英英释义

单词用法

同义词

反义词

例句

1.Results indicated as follows: (1)2 or 3 follicular waves were discovered in one estrous cycle in swamp buffaloes in Guangxi and the former was dominant (77.8%, 7/9).

结果表明：（1）沼泽型水牛一个发情周期由2个或3个卵泡发育波组成，以2个卵泡波为主（77.8％，7/9）。

2.Results indicated as follows: (1)2 or 3 follicular waves were discovered in one estrous cycle in swamp buffaloes in Guangxi and the former was dominant (77.8%, 7/9).

结果表明：（1）沼泽型水牛一个发情周期由2个或3个卵泡发育波组成，以2个卵泡波为主（77.8％，7/9）。

3.Objective Observe the effects of chronic stress on follicular growth and the estrous and the effect on the follicle development of non-gonadotropin-dependented.

目的：观察慢性应激对卵泡发育和动情周期的影响及其对卵泡发育的非促性腺激素依赖的影响。

4.Histological structure of follicular system in yaks during the estrous cycle was similar to that of cattle and buffalo.

结果表明，牦牛发情周期中卵巢卵泡发育的组织结构与其他牛基本相似。

5.Morphologically, round, oval or fusiform mast cells were present in all stages of estrous cycle.

输卵管内肥大细胞在黏膜皱襞、肌层和外膜中均有分布。

6.The follicular waves of postpartum heifers is made of 3 ~ 4 waves in the first estrous cycle.

产后母牛在第一发情周期中，卵巢卵泡的生长发育以3或4卵泡发育波为主。

7.The female dog exhibited signs of being in her estrous 发情期 when she became more affectionate and vocal.

母狗在她的estrous 发情期时表现出更加亲昵和爱叫的迹象。

8.During the estrous 发情期, many mammals experience a surge in hormone levels that affects their behavior.

在estrous 发情期期间，许多哺乳动物的激素水平急剧上升，影响它们的行为。

9.Veterinarians often recommend spaying female pets to prevent unwanted estrous 发情期 cycles.

兽医通常建议为雌性宠物绝育，以防止不必要的estrous 发情期周期。

10.The research focused on how environmental factors influence the estrous 发情期 cycles of wild deer.

这项研究集中于环境因素如何影响野生鹿的estrous 发情期周期。

11.Farmers track the estrous 发情期 of their livestock to optimize breeding schedules.

农民跟踪他们牲畜的estrous 发情期以优化繁殖时间表。

作文

The term estrous refers to a specific reproductive cycle found in many female mammals, characterized by recurring phases of fertility and hormonal changes. Understanding the estrous cycle is crucial for biologists and animal breeders alike, as it directly impacts breeding strategies and animal husbandry practices. The estrous cycle consists of several stages: proestrus, estrus, metestrus, and diestrus. Each of these phases plays a vital role in the reproductive capabilities of females. During the proestrus phase, the body prepares for ovulation. Hormones such as estrogen begin to rise, leading to physical changes that signal readiness for mating. This is followed by the estrous phase, often referred to as the heat period, where females exhibit behaviors that attract males. It is during this time that ovulation occurs, making it the optimal period for conception. The length of the estrous phase can vary significantly between species, influencing breeding schedules. After the estrous phase, the female enters metestrus, where the body begins to transition from a fertile state back to a non-fertile one. This phase is marked by a decrease in hormonal activity and prepares the body for either pregnancy or the next cycle. Finally, diestrus is a resting phase that follows metestrus, during which the reproductive system remains inactive until the cycle begins anew. Understanding the estrous cycle is not only important for breeding but also for veterinary care. For instance, knowing when an animal is in heat can help prevent unwanted pregnancies and ensure proper timing for artificial insemination. Additionally, monitoring the estrous cycle can aid in diagnosing reproductive health issues, as irregularities may indicate underlying problems. In wildlife management, knowledge of the estrous cycle is essential for conservation efforts. Many species have specific breeding seasons, and understanding these patterns helps in creating effective management strategies. For example, if a certain species is endangered, conservationists can use information about the estrous cycle to implement breeding programs that enhance population recovery. Moreover, the study of the estrous cycle extends beyond practical applications; it also offers insights into evolutionary biology. Researchers investigate how different environmental factors influence the estrous cycle, contributing to our understanding of animal behavior and adaptation. For example, seasonal changes may affect the timing of the estrous cycle, ensuring that offspring are born during periods of resource abundance. In conclusion, the estrous cycle is a fundamental aspect of mammalian reproduction that has significant implications for animal breeding, veterinary science, wildlife management, and evolutionary studies. By gaining a comprehensive understanding of the estrous cycle, we can improve animal husbandry practices, enhance conservation efforts, and deepen our knowledge of biological processes. As research continues to evolve, the importance of the estrous cycle will undoubtedly remain a critical area of focus in the fields of biology and ecology.

术语estrous指的是许多雌性哺乳动物特有的生殖周期，其特征是生育能力和激素变化的周期性阶段。理解estrous周期对生物学家和动物繁殖者至关重要，因为它直接影响繁殖策略和动物饲养实践。estrous周期由几个阶段组成：前发情期、发情期、后发情期和黄体期。这些阶段中的每一个在雌性的生殖能力中都发挥着重要作用。 在前发情期，身体为排卵做准备。雌激素等激素开始上升，导致身体发生信号传递的生理变化，表明可以交配。接下来是estrous阶段，通常称为发情期，雌性会表现出吸引雄性的行为。在这个时期，排卵发生，使其成为最佳受孕期。estrous阶段的持续时间在不同物种之间可能有显著差异，从而影响繁殖计划。 在estrous阶段之后，雌性进入后发情期，身体开始从生育状态过渡到非生育状态。这个阶段的特征是激素活动减少，为怀孕或下一个周期做准备。最后，黄体期是紧接后发情期的休息阶段，此时生殖系统保持不活跃，直到周期重新开始。 了解estrous周期不仅对繁殖重要，对兽医护理也很重要。例如，知道动物何时发情可以帮助防止意外怀孕，并确保人工授精的适当时机。此外，监测estrous周期可以帮助诊断生殖健康问题，因为不规律可能表明潜在的问题。 在野生动物管理中，了解estrous周期对保护工作至关重要。许多物种有特定的繁殖季节，理解这些模式有助于制定有效的管理策略。例如，如果某种物种濒临灭绝，保护主义者可以利用有关estrous周期的信息实施增强种群恢复的繁殖计划。 此外，estrous周期的研究不仅限于实际应用；它还提供了对进化生物学的见解。研究人员调查不同环境因素如何影响estrous周期，从而加深我们对动物行为和适应的理解。例如，季节变化可能影响estrous周期的时机，确保幼崽在资源丰富的时期出生。 总之，estrous周期是哺乳动物生殖的基本方面，对动物繁殖、兽医科学、野生动物管理和进化研究具有重要意义。通过全面理解estrous周期，我们可以改善动物饲养实践，增强保护工作，并加深对生物过程的认识。随着研究的不断发展，estrous周期的重要性无疑将继续成为生物学和生态学领域关注的关键领域。