Ascariasis is a disease of all categories of pigs with zoonotic role. It is caused by the genus nemadode Ascaris (Ascarididadae). Ascariasis infests all pig farms in our country and a considerable number of pigs, whose productivity is severely compromised. Stool samples study and evaluation of epidemiological prevalence and parasitic loud infestation confirmed this in all herds of pigs involved in the study, in all the ways of breeding and the entire territory of the country. Ascariasis was observed in all categories of pigs, while themost affected category were the piglets to 7 months (about 80% prevalence, parasitic loud 164 e/g/f). Ascariasis was observed in all categories of sows (about 50%, 120 e/g/f), while only boars resulted in less infested category (about 30% and 42 e/g/f). Coproscopic examinations are effective and offer the possibility of epidemiological estimates, while post-mortem examinations in slaughterhouses are efficient alternatives, low cost and provide sufficient data for swine ascariasis. Diagnostic techniques from the nasal discharges in piglets, was very simple and efficient. As a routine technique to perform quantitative diagnosis and other parasitic estimates, this technique was implemended for the evaluation of ascariasis, especially for alive piglets. Based on the results of this study it was concluded that ascariasis infection is the most important cause of reduce of production in pigs in our country.

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