Robert Friendship

Introduction: Newly weaned pigs require 50-100 mg/kg of zinc in feed to meet dietary requirements (National Research Council). The addition of high levels of zinc oxide (> 2000 mg/kg) in nursery diets is often used as a preventive measure for Escherichia coli diarrhea and to improve growth performance. The mechanism y which this occurs is still not fully understood, however, it is proposed that ...

Introduction: Swine influenza outbreaks are usually recognized by the sudden appearance of respiratory signs and also by quick recovery of sick animals. However, influenza A virus (IAV) can endemically circulate without causing such typical clinical outbreaks. In addition, the complexity of influenza circulation in large multi-site and multi-source herds has not been well described. The objectives ...

Introduction: Staphylococci are a major disease burden for animals and humans. In swine, Staphylococcus hyicus is the causative agent of exudative epidermitis (greasy pig disease) which is characterized by skin lesions and a greasy exudate. Outbreaks of this disease can result in significant morbidity and mortality. Swine are also common carriers of Staphylococcus aureus and, although this agent p ...

Introduction:Research has documented that non-steroidal anti-inflammatory drugs (NSAIDs) reduce pain and pain related behaviors in piglets. The use of analgesics at the time of piglet processing increases the amount of piglet handling and injections as well as increases the labor for the producer. The ability to give an injection of an NSAID at the same time as an iron product (compounded) would h ...