Viruses were extremely âpopularâ in the â90s, which is when the term âAntivirusâ became common, but today viruses are the minority when it comes to malware. There are, however, a few at-large viruses currently evolving and spreading, these include âSalityâ and âVirutâ.
Thatâs especially true when it comes to the leg labeled health, and thatâs reason enough, Baker says, to consider vaccinating your calves at branding or turnout. Traditionally, the recommendation has been to wait until calves are at least four months old before administering any vaccines. That way, goes the conventional wisdom, thereâs a reduced chance that the antibodies in the colostrum will cancel the effects of the vaccine.
Calves four months old are much easier to feed and manage in a drought situation. (See Agnote DAI-15 Feeding calves in drought-June 1999) Calf age at weaning Calves are generally weaned between 8-10 months of age. The actual age depends on several factors: 1  Feed availability-cows can continue lactation without losing condition in good years, but early weaning should be considered in drier years. 2  Condition and age of Cow-cow condition is a key factor to joining success.