Thyroid Hormones Concentrations during the Mid-Dry Period: An Early Indicator of Fatty Liver in Holstein-Friesian Dairy Cows

Table 3

Correlation coefficients (r) between thyroid hormones in serum (T₄, T₃, and T₃/T₄ ratio) and the content of lipids in the liver 12 day after calving.

Parameter	30 days before expected calving	2 days before expected calving	12 days after calving
T4	−0.633**	−0.898***	−0.769***
T3	−0.334	−0.680**	−0.606**
T3/T4	0.606**	0.772***	0.492*

* $P<.05$; **$P<.01$, ***$P<.001$.