Individual Variation of Transient Milk Production Loss After Vaccination in Sahiwal Cows (Bos Indicus)

The vaccination of productive animals has been identified as a critical intervention area. The extent of milk production loss following foot-and-mouth disease (FMD), hemorrhagic septicemia and black quarter (HS + BQ), Theileriosis, and infectious bovine rhinotracheitis (IBR) vaccination needs analysis. So, the present study collected milk production data during different vaccination. A significant (p < 0.01; p < 0.05) decrease in fortnightly total milk yield/animal and average milk yield/animal/day in different parities and stages of lactation after vaccination as compared to pre-vaccination. Among the vaccinated animals, 67.5 to 85.3 percentage animals showed a decline, whereas 14.7 to 32.5 percentage animals indicated no influence on milk production after vaccination. In the case of affected cows, 33–38% of animals showed a decline up to 10%; 20–25% of animals showed a 10–20% decline; 15–24% of animals showed a 20–30% decline; 9–10% of animals showed a 30–40% decline, and 9–15% of animals showed more than 40% decline in average daily milk yield/animal/day after FMD, HS + BQ, Theileriosis, and IBR vaccination. It can conclude that the Bos indicus showed various percentages of milk production declines, and some animals showed no decrease after vaccination.