highly significantP < 0.05
A P value < 0.01 was considered highly significant, P < 0.05 was considered significant, and 0.05 ≤ P < 0.1 was regarded as a trend.
A P value < 0.01 was considered highly significant, P < 0.05 was considered significant, and 0.05 ≤ P < 0.1 was regarded as a trend.
In addition, PRL exhibited only a numerical increasing trend, which might be related to the short experimental period, limited sample size, or maintenance of hormonal homeostasis through self-regulation.