Table 4. Mean differences, standard error of differences, and percentage differences for weights between purebreds and between
 reciprocal Fi cows at mature weight.

 Purebred cow Reciprocal F, cowt
 Mean Mean
 Breeds Ibti differences % Breeds lb* differences %
Brahman (B) Angus (A) (947-855) 9211.5** 10.8 AB-BA (987-954) 3318.6 3.5
Charolais (C) Angus (1076-855) 22112.1"* 25.8 AC-CA (1006-958) 4817.6** 5.0
Charolais-Brahman (1076-947) 12912.2** 13.6 BC-CB (1057-1048) 915.3 .9

tAB-BA Mature progeny of A x B vs. B x A.
"kg = lb x 0.454.
**P < 0.01.