title: Field study analysis of the influences of deworming regimens and housing conditions on parasites and sperm output in 21 European boar studs.
abstract: The current study reports the parasitological results of a quality control audit in 21 European boar studs. Field investigations were performed over a 2-year period (2012-2013) during the winter and spring. From each stud, an average of 30 (range, 25-33) individual faecal samples and ejaculates from 615 randomly selected Pietrain boars were analysed. Statistical analysis revealed a significant effect (P < 0.0001) of deworming regimen (DR) × age class of boar (A) and housing condition (H) × A on the presence of parasites. A second model indicated a significant effect (P = 0.0262) of DR × H × A on the presence of parasites. Sperm output was significantly affected (P < 0.0001) by the DR. Based on this study, recommendations for deworming AI boars are proposed.
authors.affiliation: Institute for the Reproduction of Farm Animals Schönow, Bernau D-16321, Germany. Electronic address: m.schulze@ifn-schoenow.de.
authors.forename: Martin
authors.initials: M
authors.lastname: Schulze
authors.affiliation: Department of Engineering for Livestock Management, Leibniz Institute for Agricultural Engineering Potsdam-Bornim, Potsdam D-14469, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Ammon
authors.affiliation: Research Unit Genetics and Biometry, Leibniz Institute for Farm Animal Biology, Dummerstorf D-18196, Germany.
authors.forename: Gerd
authors.initials: G
authors.lastname: Nürnberg
authors.affiliation: Institute for the Reproduction of Farm Animals Schönow, Bernau D-16321, Germany.
authors.forename: Karin
authors.initials: K
authors.lastname: Rüdiger
authors.affiliation: Institute for the Reproduction of Farm Animals Schönow, Bernau D-16321, Germany.
authors.forename: Markus
authors.initials: M
authors.lastname: Jung
authors.affiliation: Institute for Parasitology and Tropical Veterinary Medicine, Freie Universität Berlin, Berlin D-14163, Germany.
authors.forename: Janina
authors.initials: J
authors.lastname: Demeler
mesh_terms: D000818:Animals; D001317:Austria; D001562:Benzimidazoles / Q000627:therapeutic use; D003140:Communicable Disease Control / Q000379:methods*; D005243:Feces / Q000469:parasitology; D005858:Germany; D006799:Housing, Animal; D007783:Lactones / Q000627:therapeutic use; D008297:Male; D008962:Models, Theoretical; D009348:Nematoda / Q000302:isolation & purification; D009349:Nematode Infections / Q000469:parasitology / Q000517:prevention & control / Q000662:veterinary*; D012621:Seasons; D013094:Spermatozoa / Q000502:physiology*; D034421:Sus scrofa; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology / Q000517:prevention & control*; D013557:Switzerland
chemical_list: D001562:Benzimidazoles; D007783:Lactones
keywords: Deworming regimen; Gastro-intestinal parasites; Housing condition; Pig; Semen