Effects of Melatonin Administration to Pregnant Ewes under Heat-Stress Conditions, in Redox Status and Reproductive Outcome oleh Efterpi Bouroutzika, Dimitrios Kouretas, Serafeim Papadopoulos, Aristidis S. Veskoukis, Ekaterini Theodosiadou, Sotiria Makri, Charilaos Paliouras, Marios-Lazaros Michailidis, Mariangela Caroprese, Irene Valasi