EFFECT OF GENETIC SELECTION FOR INCREASED BODY-WEIGHT AND SEX OF POULT ON ANTIBODY-RESPONSE OF TURKEYS TO NEWCASTLE-DISEASE VIRUS AND PASTEURELLA-MULTOCIDA VACCINES
Re. Sacco et al., EFFECT OF GENETIC SELECTION FOR INCREASED BODY-WEIGHT AND SEX OF POULT ON ANTIBODY-RESPONSE OF TURKEYS TO NEWCASTLE-DISEASE VIRUS AND PASTEURELLA-MULTOCIDA VACCINES, Avian diseases, 38(1), 1994, pp. 33-36
Primary and secondary antibody responses of 671 turkeys of two genetic
lines to Newcastle disease virus (NDV) and Pasteurella multocida vacc
ines were examined. The randombred control line (RBC2) and a subline (
F) of RBC2 had been selected for increased 16-week body weight. Poults
were vaccinated at 6 and 12 weeks of age, and serum samples were coll
ected 3 weeks after each vaccination. Antibody titers were determined
using an enzyme-linked immunosorbent assay. Line F turkeys had signifi
cantly higher 9-week and 15-week serum antibody titers to NDV than lin
e RBC2. However, line RBC2 had significantly higher serum antibody tit
ers to P. multocida at 15 weeks of age than line F. The 9-week and 15-
week serum antibody titers to NDV were significantly higher in females
than males, but males had significantly higher 15-week serum antibody
titers to P. multocida than females. Sex of poults did not contribute
significantly to variation in serum antibody response to P. multocida
at 9 weeks of age.