[Perinatal mortality and the birth of weak calves].

In this review article the problem of perinatal mortality and the birth of weak calves is discussed. Two main causes can be distinguished: hypoxia and infections. It is emphasized that for a correct diagnosis a combination of a comprehensive anamnesis, a thorough examination of the calf and a laboratory investigation is necessary. Treatment of weak calves is in many cases disappointing. Preventive measures as an excellent management of periparturient cows are important.