Boris Krsnik
University of Zagreb
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Featured researches published by Boris Krsnik.
Comparative Immunology Microbiology and Infectious Diseases | 1999
Boris Krsnik; Rayan Yammine; Željko Pavičić; Tomislav Balenović; Bela Njari; Ivan Vrbanac; Ivica Valpotić
The hypothesis that altered behavior is a sign for an early recognition of disease was tested. The experiment was conducted to evaluate the behavioral patterns of pigs in a model of postweaning colibacillosis. Twenty-five weaned pigs (from a herd that was previously found to be highly susceptible to F4+ Escherichia coli strains) were randomly assigned into 5 groups, kept in isolated pens under the controlled ambiental conditions. One day after weaning, the pigs from three groups were intragastrically inoculated (via orogastric tube) with either F4ac+ (1466 or 2407) or F4- (1467) nonenterotoxigenic E. coli (non-ETEC) strains, respectively. The pigs from the fourth group were inoculated with F4ac+ ETEC strain M1823 and the remaining 5 pigs that received broth containing 1.2% sodium bicarbonate were kept as noninoculated controls. The pigs were examined daily and the frequency and duration of their behavioral patterns, such as eating, drinking, lying, standing, urinating, defecating, rooting and playing were monitored for 300 h during a period of 10 days. In this model, three conditions were also observed in F4-susceptible pigs: (1) acute fatal diarrheal disease; (2) moderate diarrhea and weight loss and (3) no diarrhea and weight loss. The incidence (both frequency and duration) of defecating was significantly higher (P < 0.05) in pigs inoculated with F4ac+ ETEC strain M1823 as compared to that of noninoculated (control) pigs. Pigs inoculated with F4ac+ non-ETEC strain 1466 had a significantly lower frequency of eating (P < 0.05) and frequency/duration of drinking (P < 0.05) than did the controls. The 1466-inoculated pigs, had an increased diarrhea score, but frequency/duration of defecating was not significantly different. Pigs inoculated with F4ac+ non-ETEC strain 2407 spent more time in lying (P < 0.05) than did noninoculated pigs. Conversely, the pigs that received F4- non-ETEC strain 1467 laid shorter (P < 0.05) and ate/drank less frequently (P < 0.05) than the controls. It was concluded that the changed occurrence of defecating and eating in pigs that were inoculated with either F4ac+ ETEC (M1823) or non-ETEC (1466) strain. respectively, was consistent with the pending clinical disease, i.e. postweaning colibacillosis.
Preventive Veterinary Medicine | 1995
Ivan Vrbanac; Tomislav Balenović; Rayane Yammine; Ivica Valpotić; Boris Krsnik
Abstract The objective of a 3 year pilot survey of preweaning mortality on a large swine farm in Bosnia and Herzegovina was to provide producers and/or veterinarians with information about causes of piglet losses, their occurrence and frequency at the herd (regional) level. This may also serve as a model for an assessment at the national level. The SNOVET system, a part of the National Animal Health Monitoring System (launched in the USA in 1985), was applied for the classification of causes of deaths among suckling piglets based on postmortem findings. To assess the incidences of causes of preweaning losses, 354094 piglets born in 34 648 litters were monitored daily from June 1985 to May 1988. Respective information from 20 682 (or 5.8%) stillborns and those piglets that died from birth to weaning (49 058 or 14.7%) was given. Among piglets born alive, overlaying was the most frequent cause of death (6%), followed by mortality due to gastrointestinal syndrome (3.9%), cachexia/inanitio neonatorum (2.2%), and losses of small or deformed piglets (1.6%). The incidence of pneumonia was very low (0.02%). A relatively high proportion of causes of mortality remained unknown (0.9%) partly owing to savaging or losing piglet corpses in the sewers. The use of recorded information on type, extent, and incidence of piglet mortality (gathered on the sample of appropriate size) on a long-term basis may help in the development of effective strategies to reduce/control losses until weaning.
European Journal of Histochemistry | 1999
Gordana Lacković; Marija Tomašković; Bela Njari; Ivan Vrbanac; Boris Krsnik; Bojan Rode; Ivica Valpotić
Stočarstvo : Časopis za unapređenje stočarstva | 1994
Tomislav Balenović; Ivan Vrbanac; Ivica Valpotić; Boris Krsnik
Veterinarski Arhiv | 1996
Boris Krsnik; Željko Pavičić; Rayane Yammine; Ivan Vrbanac; Tomislav Balenović; Vladimir Zidar
Stočarstvo | 1994
Tomislav Balenović; Ivan Vrbanac; Ivica Valpotić; Boris Krsnik
Krmiva | 2007
Irena Petak; Boris Krsnik; Vlasta Šerman
Stočarstvo | 2005
Boris Krsnik; Irena Petak; Dean Konjević; Tomislav Balenović
Stočarstvo | 1993
Stipica Ćurić; Boris Krsnik; Tomislav Balenović; Ivica Valpović; Đuro Sulimanović; Ivan Bašić
Veterinarski Arhiv | 2010
Irena Petak; Vladimir Mrljak; Zoran Tadić; Boris Krsnik