7 research outputs found
Comparison of feedlot and carcass characteristics of Angus, Hereford, Brahman, Charolais, and Gelbvieh crossbred steers
Feedlot performance of 207 steers with various percentages of Angus, Hereford, Charolais, Brahman, and Gelbvieh breeding were compared at a constant 1) days fed, 2) adjusted carcass backfat, and 3) slaughter weight. As the percentage of Angus, Hereford, or Brahman increased, growth rate decreased, whereas increasing the percentage of Charolais increased growth rate. Increasing the percentage of Gelbvieh increased weaning weight but had little effect on post-weaning gains. Increasing percentage of Charolais increased feed conversion efficiency, whereas the other breeds were similar, except that at a constant slaughter weight, greater percentage of Hereford improved feed conversion efficiency. Increasing the percentage of Charolais increased carcass weight and ribeye area and decreased yield grade, but marbling was not different from that of Angus. An increase in percentage of Hereford caused a decrease in carcass weight, ribeye area, marbling, and quality grade. Increasing percentage of Angus decreased carcass weight and ribeye area but increased marbling and quality grade. Increasing percentage of Brahman caused the greatest reduction of marbling and quality grade of any breed. Increasing the percentage Gelbvieh breeding resulted in increased ribeye area and decreased marbling at constant days fed and slaughter weight
Comparison of feedlot and carcass characteristics of Angus, Hereford, Brahman, Charolais, and Gelbvieh crossbred steers
Feedlot performance of 207 steers with
various percentages of Angus, Hereford,
Charolais, Brahman, and Gelbvieh breeding
were compared at a constant 1) days fed, 2)
adjusted carcass backfat, and 3) slaughter
weight. As the percentage of Angus, Hereford,
or Brahman increased, growth rate decreased,
whereas increasing the percentage of
Charolais increased growth rate. Increasing
the percentage of Gelbvieh increased weaning
weight but had little effect on post-weaning
gains. Increasing percentage of Charolais
increased feed conversion efficiency, whereas
the other breeds were similar, except that at a
constant slaughter weight, greater percentage
of Hereford improved feed conversion efficiency.
Increasing the percentage of Charolais
increased carcass weight and ribeye area and
decreased yield grade, but marbling was not
different from that of Angus. An increase in
percentage of Hereford caused a decrease in
carcass weight, ribeye area, marbling, and
quality grade. Increasing percentage of Angus
decreased carcass weight and ribeye area but
increased marbling and quality grade. Increasing
percentage of Brahman caused the greatest
reduction of marbling and quality grade of any
breed. Increasing the percentage Gelbvieh
breeding resulted in increased ribeye area and
decreased marbling at constant days fed and
slaughter weight
Breed and management system effects on feedlot performance and carcass traits
Eighty nine steers with different proportions
of Angus, Hereford, Charolais, Brahman, and
Gelbvieh breeding from rotational and terminal
crossbreeding systems were produced in
Louisiana and finished at KSU. Half of each
breed group was placed in the feedlot at
weaning (calves) and the other half as yearlings.
Half of the each group was slaughtered at a low
(0.3-0.4 in.), and the other half at high (0.5 -
0.6 in.) fat thickness. As percentage of
Charolais and Gelbvieh breeding increased,
feedlot performance improved. As percentage
of Charolais, Gelbvieh, and Angus increased,
carcass desirability improved. Steers started on
feed at weaning were more efficient in feed conversion
and were more profitable than those
started as yearlings. Age did not affect carcass
marbling or quality grade
Comparison of feeding calves vs. yearlings
Data from the 207 crossbred steers used in
this study indicate that when calves are placed
in the feedlot on a finishing ration at weaning,
they will have better feed efficiencies, greater
lifetime ADGs, lighter carcass weights, and
equal carcass qualities compared to those
placed as yearlings. In recent times, heavy
carcass weights have been rather common in
the industry. Every over-weight steer had a
desirable weight at one time, and this study
shows that they would have produced a desirable
carcass if managed correctly