Abstracts: Chlamydia felis: lack of association between clinical signs and the presence of the cryptic plasmid.

Chlamydia felis is an obligate intracellular bacterial pathogen that infects cats, causing severe conjunctivitis associated with upper respiratory tract disease (URTD). In the present study, 186 cats from three non-commercial catteries in São Paulo, SP, Brazil were evaluated. The detection of C. felis was performed by PCR. The clinical severity was scored from 1 to 4, . . . → Read More: Abstracts: Chlamydia felis: lack of association between clinical signs and the presence of the cryptic plasmid.

Abstracts: Are observer ratings influenced by prescription? A comparison of Free Choice Profiling and Fixed List methods of Qualitative Behavioural Assessment

Qualitative methods of behavioural assessment use observer rating scales to score the overall demeanour or body language of animals. Establishing the reliability of such holistic approaches requires test and validation of the methods used. Here, we compare two methodologies used in Qualitative Behavioural Assessment (QBA): Fixed-Lists (FL) and Free-Choice Profiling (FCP). A laboratory class of 27 . . . → Read More: Abstracts: Are observer ratings influenced by prescription? A comparison of Free Choice Profiling and Fixed List methods of Qualitative Behavioural Assessment

Fish species failing to adapt to warming oceans

Biotest study species European perchA research project associated with Sweden’s University of Gothenberg has found the impact from steadily rising ocean temperatures could prove fatal for some fish species. As well as the loss of biodiversity in the world’s oceans, the impact from warming seas on both marine mammals, and human populations that rely heavily on fish as a food source, would also be dramatic.
University of Tasmania senior research fellow Timothy Clark was a member of the Swedish team that conducted tests during 2012 and 2013 on European perch (Perca fluviatilis) from the ‘Biotest’ lake enclosure in the Baltic Sea. For over 30 years, these fish have been subjected to the lake’s ‘elevated’ water temperatures that are heated by the nearby Forsmark nuclear power plant.
The tests were also conducted on ‘reference’ fish populations from outside the enclosure, and results showed that while the fish are able to adapt their resting physiological functions to slowly rising temperatures, their maximum physiological functions are far less flexible.
“The fish can increase their lethal temperature by a certain amount, but they can’t keep up with the current rate of global water temperature increases,” Clark said. Continue reading Fish species failing to adapt to warming oceans

Abstracts: Ventricular arrhythmias in Rhodesian Ridgebacks with a family history of sudden death and results of a pedigree analysis for potential inheritance patterns

OBJECTIVE To evaluate a group of related Rhodesian Ridgebacks with a family history of sudden death for the presence of arrhythmia and to identify possible patterns of disease inheritance among these dogs.
DESIGN Prospective case series and pedigree investigation.
ANIMALS 25 Rhodesian Ridgebacks with shared bloodlines.
PROCEDURES Pedigrees of 4 young dogs (1 female and 3 males; age, 7 to 12 months) that died suddenly were evaluated, and owners of closely related dogs were asked to participate in the study. Dogs were evaluated by 24-hour Holter monitoring, standard ECG, echocardiography, or some combination of these to assess cardiac status. Necropsy reports, if available, were reviewed. Continue reading Abstracts: Ventricular arrhythmias in Rhodesian Ridgebacks with a family history of sudden death and results of a pedigree analysis for potential inheritance patterns

Abstracts: Physical health problems and environmental challenges influence balancing behaviour in laying hens

With rising public concern for animal welfare, many major food chains and restaurants are changing their policies, strictly buying their eggs from non-cage producers. However, with the additional space in these cage-free systems to perform natural behaviours and movements comes the risk of injury. We evaluated the ability to maintain balance in adult laying hens with health problems (footpad dermatitis, keel damage, poor wing feather cover; n = 15) using a series of environmental challenges and compared such abilities with those of healthy birds (n = 5). Continue reading Abstracts: Physical health problems and environmental challenges influence balancing behaviour in laying hens