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首页> 外文期刊>Zoological Science >Ability of mice to detect estrous odor in bovine urine: roles of hormones and behavior in odor discrimination.
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Ability of mice to detect estrous odor in bovine urine: roles of hormones and behavior in odor discrimination.

机译：小鼠检测牛尿中发情气味的能力：激素和行为在气味识别中的作用。

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This study was designed to evaluate the ability of mice to discriminate cow urinary odor from different reproductive phases, with a view toward detecting the estrous phase. Experiments were also carried out to establish the relationship between androgen and mouse behaviors during estrous detection. Further, the study was also intended to establish the relationship between androgen and behaviors in estrous detection. Bovine urine was collected during estrus and non-estrous periods, i.e., prepubertal, preovulatory, ovulatory, postovulatory, pregnancy, and lactation. Behavioral analyses were carried out in a Y-maze apparatus, in which the mice were acclimatized in before odor-preference tests. The number and duration of visits, and grooming behavior by male responders towards the urine samples, were recorded. Intact male mice showed a higher response towards estrus urine samples than towards non-estrous urine. By contrast, orchidectomized mice failed to discriminate estrous urine, whereas castrated mice treated with testosterone regained the ability to discriminate estrus odor. A higher level of grooming behavior was found in males exposed to estrous urine than to urine of other phases. These results suggest that normal mice have the ability to detect estrus, and that this discriminating ability is androgen dependent. The grooming behavior shown by males in response to estrous urine may be taken as a key parameters in estrous detection. The results further suggest that bovine estrous urine produces specific odors that probably involve both intraspecific and interspecific communication.
机译：本研究旨在评估小鼠区分不同生殖阶段的牛尿臭味的能力，以期检测发情阶段。还进行了实验以建立发情检测过程中雄激素与小鼠行为之间的关系。此外，该研究还旨在建立发情检测中雄激素与行为之间的关系。在发情期和非发情期（即青春期前，排卵前，排卵，排卵后，妊娠和哺乳期）收集牛尿。在Y-迷宫设备中进行行为分析，其中在进行气味偏好测试之前使小鼠适应环境。记录访问的次数和持续时间，以及男性应答者对尿液样本的修饰行为。完整的雄性小鼠对发情尿样的反应比对非发情尿样的反应高。相比之下，经睾丸切除的小鼠无法区分发情尿液，而用睾丸激素治疗的cast割小鼠恢复了辨别发情气味的能力。发现暴露于发情尿液的男性比其他阶段的尿液的修饰行为水平更高。这些结果表明正常小鼠具有检测发情的能力，并且这种区分能力是雄激素依赖性的。男性对发情尿液表现出的修饰行为可以作为发情检测中的关键参数。结果进一步表明，牛发情尿产​​生特定的气味，可能涉及种内和种间的交流。

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