Bovilis Rotavec Corona

Bovilis Rotavec Corona is used for the active immunisation of pregnant cows and heifers to raise antibodies against E. coli adhesins F5 (K99) and F41, rotavirus and coronavirus. While calves are fed colostrum from vaccinated cows during the first two to four weeks of life, these antibodies have been demonstrated to:

• reduce the severity of diarrhoea caused by E. coli F5 (K99) and F41
• reduce the incidence of scours caused by rotavirus
• reduce the shedding of virus by calves infected with rotavirus or coronavirus.

Onset of Immunity: Passive protection against all active substances will commence from the start of colostrum feeding.
Duration of Immunity: In calves artificially fed with pooled colostrum, protection will continue until colostrum feeding ceases. In naturally suckled
calves, protection against rotavirus will persist for at least 7 days and against coronavirus for at least 14 days.

Vaccinate healthy animals only.

Administration:
Administer a single dose of 2 ml per animal. The recommended site of injection is the side of the neck.
A single injection should be given during each pregnancy between 12 and 3 weeks before calving is expected.

Colostrum feeding:
Protection of calves depends on the physical presence of colostrum antibodies (from vaccinated cows) within the gut for the duration of the first 2 - 3 weeks of life until calves develop their own immunity. Thus, it is essential to ensure adequate colostrum feeding for the whole of this period to maximise the efficacy of vaccination. All calves must receive adequate colostrum from their dams within 6 hours of birth.

Suckled calves will continue to receive adequate colostrum naturally by feeding from vaccinated cows.

In the dairy herd colostrum/milk from the first 6 - 8 milkings of vaccinated cows should be pooled. The colostrum may be stored below 20 °C, but should be used as soon as possible as immunoglobulin levels may fall by up to 50% after storage for 28 days. Where possible, storage at 4 °C is recommended. The calves should be fed on this pool at the rate of 2½ to 3½ litres per day (according to body size) for the first two weeks of life.

Optimal results will be obtained if a whole herd cow vaccination policy is adopted. This will ensure that in calves the level of infection and consequent virus excretion is kept to a minimum and consequently the overall level of disease challenge on the farm is minimised.

Withdrawal periods: Zero days.

Store and transport refrigerated (2 °C – 8 °C)

DATASHEET: Bovilis Rotavec Corona