A one-dose vial of Rispoval Intranasal has been introduced for the respiratory health protection of calves after birth without having to batch them in groups or waste unused vaccine in multi-dose packs.

Rispoval
Zoetis introduces one-dose vial of Rispoval Intranasal.

To make ready for use, the vaccine ­­– manufactured by Zoetis – is reconstituted by mixing a powder with sterile diluent. Once mixed, the licensed shelf life is two hours, meaning any unused vaccine in multi-dose packs must be thrown away. By stocking a combination of one-dose and multi-dose packs, farmers can eliminate this.

Viral protection

The vaccine protects against two primary viral causes of pneumonia in young calves:

  • bovine respiratory syncytial virus (BRSV)
  • parainfluenza type-three virus (PI3V)

Blood samples from 2,145 calves with pneumonia signs found 78% exposed to BRSV and 81% to PI3V. The product licence allows use from nine days of age, with the onset of immunity to BRSV and PI3V after 5 and 10 days, respectively. The licence also specifies a 12-week duration of immunity.

Threat reduction

Zoetis vet Carolyn Hogan said viruses are the instigator of a majority of respiratory health problems.

She said: “Early-life protection also helps reduce the threat from opportunistic secondary bacterial infections, such as Pasteurella.

“Good respiratory health is essential to ensure calves develop to achieve their lifetime potential. But it’s estimated that 67% of pneumonia cases occur in calves less than three months old

“Whether suckled or reared, calves that don’t grow effectively in the early weeks are unlikely to catch up later. On dairy and beef units, proactive management of the calf living space, nutrition and disease resilience is critical to maximise lifetime productivity, which is important under today’s farm business economics.”

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