https://www.selleckchem.com/pr....oducts/curzerene.htm
Specifically, the proportions in the PS1 (0.74, P  less then  0.0001) and PS4 (0.08, P  less then  0.05) were significantly higher than their population proportion estimates, 0.5 and zero, respectively. Therefore, this estrus identification method is much useful in the PS1 and PS4, the practical field scenarios requiring an accurate estrus prediction method, compared to the PS2 and PS3. Especially, this method is 91 % confirmatory to detect early estrus in PS4. Therefore, salivary ferning is a useful technique to identify early estrus