PROCESSO PARA A PREPARACAO DE NOVOS ANTIBIOTICOS E DE COMPOSICOES QUE OS CONTEM UTEIS PARA O TRATAMENTO DE INFECCOES PROVOCADAS POR PROTOZOARIOS

摘要

The present invention relates to the methods and compounds and compositions for the control of protozoal infection, especially coccidial ones, in warm-blooded animals, such as meat-producing animals, i.e., poultry, by administering to the animals a protozoacidally-effective amount of new antibiotics designated LL-D42067 alpha and LL-D42067 beta , NRRL 15734. These novel antibiotics are produced via a controlled conditioned microbiological fermentation using a new strain of Actinomadura madurae subspecies simaoensis or mutants thereof.