Figures
- Markers of Oxidative Status in Plasma and Erythrocytes of Transition Dairy Cows During Hot Season

..................................................

Figure 1. Mean daily values of temperature-humidity index (THI) during the night-time (a: from 2100 to 0800 h) and during the daytime (b: from 0900 to 2000 h), in summer seasons. The range between 72 and 78 THI values indicates a moderate heat stress condition (Armstrong, 1994).

..................................................

Figure 2. Changes of plasma glutathione peroxidase activity (GSH-Px-P) and thiol groups concentration (SHp) of transition dairy cows during summer ( ${blacksquare}$ ) or spring (•) periods.