RELATIONSHIP BETWEEN TRANSFERRIN TYPE AND FEEDLOT PERFORMANCE IN BEEF HEIFERS

Abstract
Sera from 120 feedlot heifers were analyzed by starch gel electrophoresis to determine their transferrin types. Estimates of the possible effects of different transferrin types on gain in the feedlot and some carcass characteristics were obtained by least squares methods. Analysis of variance showed that transferrin type did not have a significant influence on gain and carcass characteristics. Gene frequencies of the different transferrin alleles, derived from a breed group of 79 Hereford heifers, arc also reported.