Juhok haemonchosisa - Irodalmi összefoglaló

Abstract

SUMMARY Haemonchus contortus has been known for a long time in the tropical and sub­tropical regions of the world. This highly pathogenic, blood­feeding nematode species is an especially significant threat to the health and production of sheep and goats. During the last decade the importance of haemonchosis in sheep flocks has increased in many European countries due to the climate change and anthelmintic resistance. Although, the occurrence of this parasite in Hungary was known many years ago there is still scant knowledge about its distribu­tion and economic importance. Recently, haemonchosis has been diagnosed in some local sheep flocks, therefore the authors summarize the knowledge based on the published data. The biology and the geographical distribution of H. contortus and its economic importance are mentioned first. The traditional (morphological identification of eggs and third instar larvae) and new diagnos­tic methods (fluorescein­labelled peanut agglutinin test, LAMP) to identify its eggs, the drugs available to use for treatments and the related anthelmintic resistance problems are discussed. Finally, alternative control possibilities of haemonchosis, such as the role of targeted selective treatments, grazing and nutritional management, genetic selection of sheep, vaccination and biological methods are discussed.