Production of SRIF-antibodies was determined in 18 steer calves immuni
zed against SRIF-conjugate prepared in Freund's, Alhydrogel, or Havlog
en adjuvant. Freund's adjuvant elevated (P < 0.05) antibody titers bet
ween the first booster (wk 6) and termination (wk 24) of the experimen
t. Alhydrogel and Havlogen adjuvants also elevated (P < 0.05) titers,
but only between wk 8 and 10.