期刊
JOURNAL OF REPRODUCTION AND DEVELOPMENT
卷 68, 期 2, 页码 85-89出版社
SOCIETY REPRODUCTION & DEVELOPMENT-SRD
DOI: 10.1262/jrd.2021-125
关键词
Dairy cows; Estrus; Neurokin-3 receptor agonist; Ovulation; Stress
资金
- Society for Reproduction and Development
- JSPS KAKENHI [26850195, 16K18802, 17HP2009]
The reproductive performance of modern dairy cows has declined due to decreased estrus expression and increased incidence of ovulation disorders. Understanding the changes in endocrine functions and developing effective treatment strategies are crucial for addressing these problems.
The reproductive performance of dairy cows has declined, along with an increase in their milk yield. First-service conception rates in lactating dairy cows are often lower than 50%. The precise detection of estrus is an important factor in the reproductive management of dairy cows for successful fertilization and pregnancy. However, estrus expression has been decreasing in modern dairy cows, affecting the detection rate of estrus. In addition to estrus, a high incidence of ovulation disorders affects the fertility of dairy cows. To address these problems, it is necessary to understand the changes in the endocrine functions that underlie estrus and ovulation disorders, and to develop effective treatment strategies. Recent studies have revealed that neurokinin B and neurokinin 3 receptor signaling play important roles in the regulation of the secretion of gonadotropin-releasing and luteinizing hormones, suggesting a potential clinical avenue for the stimulation of gonadal function. In this review, I have discussed the problems in estrus and ovulation disorders in modern dairy cows as well as the possible applications of neurokinin 3 receptor agonists in the treatment of these disorders.
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