Table 3. Mean differences and standard errors of mean differences for calf weights between purebred, between reciprocal Fi calves, and
 between calves of reciprocal F, cows.

 Calf weaning weight Calf 205-day weight
 Mean
 Breed groups lb* Mean difference % lb' difference %

Purebreds
 Brahman (B) -Angus (A) (398.5-403.8) 5.312.3 1.3 (384.7-366.6) 18.1 8.9* 4.9
 Charolais (C) -Angus (491.7-403.8) 87.912.1* 21.8 (465.5-366.6) 98.98.8** 27.0
 Charolais Brahman (491.7-398.5) 93.211.5** 23.4 (465.5-384.7) 80.88.3** 21.0
Reciprocal Fi calvest
 AB-BA (452.9-428.0) 24.9 12.8 5.8 (427.5-412.9) 14.69.3 3.5
 AC-CA (477.6-449.5) 28.1-13.0* 6.2 (457.1-406.3) 50.89.4** 12.7
 CB-BC (503.4-464.0) 39.412.0** 8.5 (474.8-454.7) 20.1-8.8* 4.4
Reciprocal Fi cows*
 AB-BA (507.5-499.1) 8.412.6 1.7 (465.5-469.6) -4.19.0 0.8
 AC-CA (487.1-480.8) 6.3+12.7 1.3 (449.8-437.5) 12.39.0 2.8
 CB-BC (506.9-496.4) 10.511.8 2.1 (464.4-468.1) -3.7+8.4 0.8


'kg = lb x 0.454.
"Last letter of pair is dam breed: AB
 Brahman sire x Brahman dam.
 *Calves of reciprocal F, cows.
 *P < 0.05.
**P < 0.01.


Angus sire x Brahman dam, BA = Brahman sire x Angus dam; AB-BA = Angus sire x Brahman dam minus