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The concentrations of oestradiol-17β and progesterone in the blood were studied during natural oestrus, synchronized oestrus and the 1st oestrus after synchronized oestrus in Friesland, Chios, Serrai and Karagouniko sheep. During natural oestrus, significant variations in oestradiol-17β...

Kouskoura, T.; Kouimtzis, S.; Alexaki, E.; Smokovitis, A.
Reproduction in Domestic Animals, 1995, 30, 1, pp 8-13

Lead concentrations in blood and semen samples from 14 Holstein bulls aged 3-5 years, in an AI centre were determined, as well as sperm motility or velocity in relation to the presence of lead acetate at 0.25 or 2.5 µg/Pb/ml semen. Lead was found in blood, seminal plasma and spermatozoa of all...

Alexaki, E.; Samara, C.; Alexopoulos, C.; Tsafaris, F.; Smokovitis, A.
Bulletin of Environmental Contamination and Toxicology, 1990, 45, 6, pp 824-828