Early returns to estrus are those occurring before 18 days post-service.
Under normal conditions they account for a very small percentage of the matings < 0.5%.
![](https://www.pig333.com/3tres3_common/dist_nou/css/images/imb5.png)
Early returns are not normal, and often correspond to poor heat detection and problems with recording dates.
Use the flowchart to access other parts of the tool.
![Types of gestation losses that can lower the farrowing rate, detailing the different types of returns to estrus based on they occur.](https://www.pig333.com/3tres3_common/art/pig333/16359/total-returns_169586.jpg?w=820&q=1&t=1653979446)