Evidence of dehydration and electrolyte disturbances in cases of perennial ryegrass toxicosis in Australian sheep.

Case Report: Perennial ryegrass toxicosis (PRGT) is a common disease entity in Australia, presenting as an association of clinical signs including alterations in normal behavioural, ataxia ('staggers'), ill thrift and gastrointestinal dysfunction ('scours'). Clinical signs can range in severity from mild (gait abnormalities and failure to thrive) to severe (seizures, lateral recumbency and death). Presentation across the flock is usually highly variable.

Unintentional needlestick injuries in livestock production: a case series and review.

Livestock producers and their employees sometimes experience unintentional needlestick injury (NSI) while vaccinating or injecting medications into animals. There is little published regarding the medical complications that can develop from this occupational exposure. The objectives of this study were to (1) perform a retrospective review of animal-related NSIs treated at a tertiary medical center of a rural state; and (2) review the risks of NSI and measures to decrease their occurrence.

Anthelmintic resistance in cattle nematodes on 13 south-west Victorian properties.

Objective: To report the level of anthelmintic resistance on 13 commercial cattle properties in south-west Victoria, Australia.

Procedure: Between 2006 and 2009 worm egg count reduction tests were conducted on calves on the 13 properties. Samples were collected 10-14 days post anthelmintic treatment and worm egg counts and larval differentiation tests were conducted.

Evidence that moxidectin is a greater risk factor than ivermectin in the development of resistance to macrocyclic lactones by Ostertagia spp in sheep in south eastern Australia.

Aim: To determine associations between resistance of Ostertagia (=Teladorsagia) spp to macrocyclic lactone (ML) anthelmintics and history of use of anthelmintics, by type, on commercial sheep farms in temperate regions of southern South Australia and Victoria, Australia.

Methods: Faecal egg count reduction tests (FECRTs) were conducted during a 2.5-year period (from August 2001 to January 2004) and records of the type of anthelmintic used in the 5 years preceding the FECRTs were collected from commercial sheep farms (n=103) in southern South Australia and Victoria, and data analysed retrospectively.