Technique for Canine Total Hip Replacement

Between August 1976 and April 1980, a total of 132 canine total hip replacements using a commercially available prosthesis, were performed on clinical patients at The Ohio State University Veterinary Hospital and Berwyn Veterinary Hospital, Chicago. The technique for total hip replacement is described. Details of preoperative evaluation, the operative procedure, and postoperative care are presented.     

Surgical Repair of Metacarpal Condylar Fractures with Palmar Osteochondral Comminution in Two Thoroughbred Horses

Complete displaced lateral condylar fractures of the metacarpus with triangular osteochondral fragments at the palmar articular surface occurred in two Thoroughbred horses. The condylar fractures were repaired with cortical bone screws following removal of the osetochondral fragments via a dorsal arthrotomy and distraction of the condyles. One horse raced successfully after surgery, and the other is being used successfully as an English pleasure mount.     

Antigenic stability of fimbriae of Bacteroides nodosus

Successful vaccination of sheep against footrot and attempts to eradicate the disease depend on there being a limit to the antigenic diversity of the causative bacterium, Bacteroides nodosus. Fimbrial antigenic variation was therefore investigated in vivo, both under conditions of chronic infection and under the pressure of a vaccine-induced immune response, to ascertain whether this represented an obstacle to such goals. Material was available from 5 experiments and although B. nodosus appeared to have undergone changes in its fimbrial antigens in one of these, the possibility that superinfection was responsible for the variation detected could not be ruled out because all sheep in this case were maintained at pasture. Overall, the results provided no evidence of fimbrial antigenic shift in B. nodosus in vivo and in conclusion, the survival of the organism in the sheep's foot, both in long-term natural infection and following vaccination, must therefore be related to factors other than the ability to undergo antigenic variation in order to evade the host's immune response.     

Model-Based Integrated Methods for Quantitative Estimation of Soil Salinity from Hyperspectral Remote Sensing Data:A Case Study of Seffected South African Soils

Soil salinization is a land degradation process that leads to reduced agricultural yields. This study investigated the method that can best predict electrical conductivity (EC) in dry soils using individual bands, a normalized difference salinity index (NDSI), partial least squares regression (PLSR), and bagging PLSR. Soil spectral reflectance of dried, ground, and sieved soil samples containing varying amounts of EC was measured using an ASD FieldSpec spectrometer in a darkroom. Predictive models were computed using a training dataset. An independent validation dataset was used to validate the models. The results showed that good predictions could be made based on bagging PLSR using first derivative reflectance (validation R2 = 0.85), PLSR using untransformed reflectance (validation R2 = 0.70), NDSI (validation R2 = 0.65), and the untransformed individual band at 2257 nm (validation R2 = 0.60) predictive models. These suggested the potential of mapping soil salinity using airborne and/or satellite hyperspectral data during dry seasons.