Identification of Risk Factors Associated with Treatment for BRD in Beef Calves Within the First 60 Days After Arrival at Fattening Operations in Northwestern Italy Beef Calves.
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引用次数: 0
Abstract
Bovine respiratory disease (BRD) impacts beef cattle health and farming systems. To better understand the BRD predisposing factors, a study was conducted in northwest Italy on a population of 26 batches (760 animals) of beef cattle imported from France. Of these, 173 underwent physical examination for clinical signs of BRD (rectal temperature > 39.5 °C, respiratory rate > 36 bpm, cough, nasal or ocular discharge) and blood sampling to detect antibodies against bovine viral respiratory infectious agents (e.g., parainfluenza 3, bovine herpesvirus type 1), haptoglobin and reactive oxygen metabolites concentrations, on arrival. Data on BRD treatments performed within 60 days of arrival were extracted from farm registers. The two most frequent cattle breeds were Blonde d'Aquitaine (80/173, 46.2%) and Limousine (61/173, 35.3%); the median batch weight was 332 kg (range, 195-470). At least one clinical sign of BRD was noted in 57.2% (99/173) of the animals. Most animals tested positive for BPIV3 (131/173, 75.7%) and BRSV (112/172, 64.7%). Bovine respiratory disease treatment was associated with transport time and average weight on arrival. Moreover, reactive oxygen metabolites levels differed between treated and untreated animals; this difference could help predict the onset of BRD, though further studies are needed to draw conclusions.
期刊介绍:
Veterinary Sciences is an international and interdisciplinary scholarly open access journal. It publishes original that are relevant to any field of veterinary sciences, including prevention, diagnosis and treatment of disease, disorder and injury in animals. This journal covers almost all topics related to animal health and veterinary medicine. Research fields of interest include but are not limited to: anaesthesiology anatomy bacteriology biochemistry cardiology dentistry dermatology embryology endocrinology epidemiology genetics histology immunology microbiology molecular biology mycology neurobiology oncology ophthalmology parasitology pathology pharmacology physiology radiology surgery theriogenology toxicology virology.