The objective of this study was to confirm the presence and investigate the identity of Erysipelothrix spp. in condemned tissues obtained from a regional abattoir. Tissue specimens from 70 carcasses with macroscopic lesions suspect of swine erysipelas were collected at…
Transmission of PCV2: Comparison of shedding patterns between PCV2a and PCV2b, evaluation of routes of transmission (fecal, oral, nasal, mechanical) and understanding the roles of spray-dried plasma and transport vehicles
Temporal evidence correlated the emergence of PCV2b in the U.S. in 2005 with more frequent and severe porcine circovirus associated disease (PCVAD) cases. Information on the quantity and duration of PCV2b DNA in various biological samples is vital to understanding…
Determination of the amount of PCV2 needed for intrauterine transmission and assessment of effect of PCV2 exposure (natural and vaccine) prior to insemination
Porcine circovirus type 2 (PCV2) is associated with reproductive failure in pregnant female pigs; however, the role of PCV2 in semen has not been elucidated. To determine the significance of semen in vertical PCV2 transmission, a two phased experiment was…
Head-to-head comparison of the level of protection and duration of immunity induced by different commercial and an autogenous PCV2 vaccine
The study objectives were to compare the duration of immunity of commercially available, one and two dose, killed porcine circovirus type 2 (PCV2) vaccines. Sixty, 3.5-week-old pigs were randomly divided into 6 treatment groups: one dose vaccines (FDAH-1, BIVI-1), two…
Investigations on breed-dependent differences in susceptibility to PCV2
Anecdotal information from producers and veterinarians in the field suggests that there are differences in susceptibility to porcine circovirus type 2 associated disease (PCVAD). Some producers have changed breeding programs based on this information. The objective of this study was…