The causes, incidence and control of arthritis in swine are discussed. Abattoir condemnation of carcasses for arthritis caused major economic losses for producers in New South Wales. Of 1 117 818 pigs slaughtered in 1979-1980, 1979 (0.18%) were condemned for arthritis.

One side of each of 20 lamb carcasses was dissected into muscle, bone and fat. The other side of each lamb was cross-sectioned at 11 sites. Photographs of cross-sections were scanned with an image analyser to measure the amount of muscle, bone and fat at each site. Estimations of the composition of ...

Deaths in cattle fed sudax hay were attributed to nitrate poisoning. Seventy-three animals out of 157 cattle died after being fed the hay, and 11 of the surviving cows aborted in the next 6 days. Toxicological findings supported this diagnosis with samples of the sudax hay containing up to 3.1% nitr...

Intramural vascular patterns of the jejunum and colon were evaluated during ischaemic strangulation obstruction (ISO, 70 min) and subsequent reperfusion (60 min) in 7 adult anaesthetized horses. Microvasculature of experimental and control segments was described by comparison of results from microan...

Effects of intraluminal distention (25 cm of H2O, 120 min) and subsequent decompression (60 min) on intramural vascular patterns of the small intestine was evaluated in 7 anaesthetized horses. Intraluminal distension (25 cm of H2O, 120 min) was created in 2 jejunal segments in each horse. Experiment...

Nine of ten 13-month-old Aberdeen Angus bulls, injected with 0.25 ml of a sclerosing agent (3.6% formaldehyde in 90% ethanol) in the caudae epididymes, developed epididymitis after nine days. Semen samples collected after 40 days contained numerous motile spermatozoa in one sample, and small numbers...

Between July 1985 and April 1986, mycobacterial lymphadenitis was diagnosed in 6 of 2407 slaughter pigs from a herd in which most animals were raised in confinement. All 6 affected pigs had access to earth-floored pens at least 81 days before slaughter. Infection rate was 9.4% in pigs kept on earth ...

Data were collected for 3636 full-term pigs born in a commercial swine herd to determine the effects of birth weight and clinical disease on survival during the first 3 weeks of life. Logistic regression models were constructed for 7-day survival for all live-born pigs, and for 21-day survival for p...

Serological responses to A. pleuropneumoniae serovar 7 infection were monitored by ELISA in a cohort of 66 pigs between weaning and market. Antibody concentrations were high (63/65 seropositive) at 4 weeks of age but declined to low levels from 8 to 12 weeks. Mean antibody concn rose significantly b...

Half the sows and boars on each of 5 commercial farms that had histories of seasonal infertility were given 4 g vitamin C daily. The other half was unsupplemented. Of 423 sows which were allocated to the experiment during the summer-early autumn of 1978-79, 392 were available for mating during the c...

The financial impact of an outbreak of transmissible gastroenteritis in pigs which occurred in February 1986, was evaluated in a California sow herd (320 sows, 15 boars) through estimating the effects on growth, feed, and profit. Two groups of pigs were studied: pigs born before and surviving the ou...

Using computerized decision-tree analysis and simulation modelling to evaluate control and eradication strategies for pseudorabies virus (PRV) three alternative actions were considered for a hypothetical 100-sow, farrow-to-finish operation: (1) depopulation-repopulation, (2) test-and-removal of sero...

Studies were conducted under experimental and field conditions to determine the effect of infection with M. hyopneumoniae on the immune response in serum as measured by ELISA. Following intratracheal challenge or contact exposure, serologically negative pigs derived from mycoplasma-free piggeries de...

The distribution, clinical signs, diagnosis, treatment, and prevention and control of Babesia gibsoni infections in dogs are reviewed. This disease affects wild and domestic canids in Asia, Africa, Europe, the Middle East and North America. Common clinical signs include anaemia, pyrexia, anorexia, l...

The extent of the serological cross-reactivity was determined in the indirect fluorescent antibody (IFA) test for B. gibsoni, and the optimal cut-off titre for seropositivity. The lowest titre to B. gibsoni detected in a dog with naturally acquired clinical babesiosis was 1280 and 7 of 12 dogs had t...

Objective - To develop a better system for classification of herd infection status for paratuberculosis (Johne's disease JD]) in US cattle herds on the basis of the risk of potential transmission of Mycobacterium avium subsp paratubeculosis. Sample - Simulated data for herd size and within-herd...

The spreadsheet program based on Quattro-Pro version 2.0 was developed to assist researchers, teachers, and practitioners answer questions related to the development and application of diagnostic tests in epidemiological studies and clinical veterinary medicine. Many results are presented graphicall...

In studies involving 417 heifer calves born in the San Joaquin Valley between Jan. 1991 and Jan. 1992, determinations of packed cell volume (PCV), total proteins (TP), serum immunoglobulin G (IgG) and birth weight were assessed as possible risk factors in neonatal diarrhoea. Positive associations we...

A kinetic enzyme-linked immunosorbent assay (ELISA) was developed using antigenic extracts prepared from P. cuniculi and sera from 37 Psoroptes sp.-infested and 43 uninfested bighorn sheep (Ovis canadensis). Serial dilutions of these serum samples, representing 3 bighorn sheep subspecies and 9 geogr...

A pig farm of 6000 weaning to market age pigs had a mortality rate of 2.8% in October 1989 and 1.9% in April 1990. Four pigs were examined PM. All pigs had pulmonary haemorrahage with patchy necrosis and fibrinous pleuritis which was seen, on histological examiantion, as severe haemorrhagic and necr...

Diagnostic strategies to detect Mycobacterium avium subsp. paratuberculosis (MAP) super-shedder cows in dairy herds have been minimally studied. The objective of the current study was to compare the cost-effectiveness of strategies for identification of MAP super-shedders on a California dairy herd ...

A serosurvey of antibodies to canine parvovirus (CPV), canine distemper virus (CDV), and Ehrlichia canis in African (Lycanon pictus) and sympatric domestic canids was conducted in the Maasai Mara, Kenya, in 1989 and 1990. Samples were collected from about 20% of the sympatric and wild dog population...