Hahn Sang-Eun, Jo Young-Kwang, Jin Yun-Kyong, Jang Goo
Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute of Veterinary Science, Seoul National University, Seoul, Republic of Korea; Department of Theriogenology, Veterinary Medicine Teaching Hospital of Seoul National University, Seoul, Republic of Korea.
Department of Theriogenology and Biotechnology, College of Veterinary Medicine and the Research Institute of Veterinary Science, Seoul National University, Seoul, Republic of Korea; Department of Theriogenology, Veterinary Medicine Teaching Hospital of Seoul National University, Seoul, Republic of Korea; Emergence Center for Food-Medicine Personalized Therapy System, Advanced Institutes of Convergence Technology, Seoul National University, Gyeonggi-do 443-270, Republic of Korea.
Theriogenology. 2017 Dec;104:49-54. doi: 10.1016/j.theriogenology.2017.07.034. Epub 2017 Jul 26.
Determination of the timing of the estrus cycle is essential for fertile mating. There are physiological variations among breeds, between bitches, and between cycles of the same bitch. If serial monitoring and many tools are applied, the exact moment of ovulation could be pin-pointed. However, it leads to time and costly difficulties. Progesterone concentrations during estrus cycles follow a specific pattern, and it is largely used in timing of fertile period. Although it has similar pattern in general, it is likely that breed-specific differences exist. The aim of this study was to investigate the way of timing the fertile period for successful pregnancy in American Bully dogs based on vaginal cytology and progesterone assay with minimized cost. To identify the empirical relations among reproductive characteristics, we performed statistical analyses on data from proestrus-to-estrus 27 American Bully dogs referred for 7 months. We found the significant correlations between the cyclic changes of vaginal cytology and progesterone assay. The relationship of serum progesterone concentrations with the days from vaginal discharge onset was analyzed through linear regression assay. In conclusion, we addressed two standards in the timing of fertile period with a minimal number of progesterone assays in the breeding management of American Bully dogs.
确定发情周期的时间对于成功交配至关重要。不同品种、不同母犬以及同一母犬的不同发情周期之间都存在生理差异。如果采用连续监测并使用多种工具，就可以精确确定排卵的具体时刻。然而，这会带来时间和成本方面的困难。发情周期中的孕酮浓度遵循特定模式，并且在确定受孕期时广泛应用。尽管总体上有相似模式，但不同品种之间可能存在差异。本研究的目的是基于阴道细胞学检查和孕酮检测，以最小化成本来探究美国恶霸犬成功受孕的受孕期确定方法。为了确定生殖特征之间的经验关系，我们对27只美国恶霸犬在7个月内从发情前期到发情期的数据进行了统计分析。我们发现阴道细胞学检查和孕酮检测的周期性变化之间存在显著相关性。通过线性回归分析血清孕酮浓度与阴道分泌物开始出现后的天数之间的关系。总之，我们在美 国恶霸犬的繁殖管理中，通过最少次数的孕酮检测确定了受孕期的两个标准。
