The breeding bulls reared for the purpose of artificial insemination needs timely prevention against various
bacterial and viral diseases. Routine vaccination is thereby being practiced in all the bull studs and bull mother
farms in India for this purpose but vaccination has become one of the major anaphylactic stress factors that affect
the semen quality. Based on data available regarding FMD vaccination during the period of 2002 to 2004 in
Artificial Breeding Complex, NDRI, Karnal; effect of FMD vaccination was studied on semen quality parameters of
bulls. One month pre-vaccination and one month post-vaccination data were collected after data adjusted against
season, period and age with respect to significance. The results showed that FMD vaccination had no significant
(P>0.05) effect on ejaculate volume of semen (4.48 ± 0.24 ml vs. 4.70 ± 0.29 ml); total volume per day (7.07 ±
0.60 ml vs. 6.27 ± 0.68 ml); initial motility (55.41 ± 0.07 % vs. 48.07 ± 0.11 %) and total sperm output per
ejaculate (3244.69 ± 238.21 vs. 2700.00 ± 294.77x106
) whereas there was a significant decrease in mass activity
(P<0.05) (2.20 ± 0.12 vs. 1.73 ± 0.14) and sperm concentration per ml (P<0.01) (737.76 ± 41.21 x1 06/ml vs.
540.63 ± 50.99 x106
/ml) in Sahiwal bulls. The following study indicates that may be the secondary activities of
accessory sex glands remain unaffected following vaccination but application of FMD vaccine has significant
(P<0.05) adverse effect on most of the seminal attributes during post vaccination in Sahiwal bulls.
M. Bhakat, T.K. Mohanty, A.K. Gupta, V.S. Raina, G. Mondal, H.M. Khan. (2008) Effect of FMD vaccination on various semen characteristics of Sahiwal bulls, , Volume-45, Issue-2.
