Epidemiology of dicroceliosis and changes in some chemical indices of muscular tissue and liver of cattle in the Republic of Moldova.
The study of the parasitological invasions with Dicrocoelium lanceolatum in about 8000 cattle have been carried out in different time periods (1981-1982, 2001-2002) in private farms, family household and specialized in milk and beef production farming sectors with different maintenance technologies from the Republic of Moldova. The results of the parasitological research carried out in 1981-1982 have revealed the 22.3-33.5% incidence of dicroceliosis in adult cattle from farming sectors, 426-51.4% incidence informs and 63.5-68.3% in cattle from family households; the incidence figures related to bull-calves population (as of 23-25 months) were 10.5-17.2%, 23.5-30.4% and 35.6-44.7% correspondingly. During 2001-2002 (a period just after the crucial changes happen in the zoo technical sector) the carried investigations show that 78.6% of adult cattle and 74.5% of bull-calves populations have been found infested. Comparatively to situation researched in 1981-1982, the level of invasion has increased by 31.0% in adult cattle and by 47.1% in bull-calves that demonstrates the existance of various locus of parasitary agents (definitive and complimentary hosts) as a result of the absence or irregular dehelminthizations. It was determined that the infested with dicroceliosis cattle produce less meat and eatable by-products. Moreover, the content of some vitamins (A, E, B1, B2, C), micro-, macroelements (Ca, Mg, Na, K, Fe, P), chemical indicies (humidity, dry solid matter, proteins, fat, ashes) in muscular and liver tussues proved to be considerably changed influencing considerably the animal products' nutrition value.