Bruises on southwestern feedlot cattle
Journal of Animal Science, volume 53 Supplement 1 (1981) page 213
1523 head of 454kg. fed feedlot cattle were surveyed for discountable
bruises in a large southwestern slaughter plant.
- The cattle were
crossbreds with 1/8 to 1/2 Brahman breeding.
- In each group of animals
25% to 50% had either tipped or complete horns.
The cattle were transported to the slaughter plant from six different
- The distance transported was 30 to 240 km.
Overall the cattle had 10.5% discountable bruises,
5% of them had discountable loin bruises.
- Out of the 5%
had loin bruises, 2.3% had loin bruises that extended all the way through
Location of the bruises:
- 45% loin
- 23% back and
- 2% rump
- 15% flank
- 11% rib
- 4% on the
Cattle sold by live weights
had 14% discountable bruises and cattle sold on a carcass basis had 8%
The producer gets the bruises deducted from his payment when the
cattle are sold on a carcass basis.
13 truckloads of cattle were hauled from one feedlot in a 14.6m Wilson
double deck fat cattle trailer which unloaded through a rear
- Loads consisting of 50 to 51 head had 10.2% discountable
bruises overall, and 4.3% discountable loin bruises.
- Loads consisting
of 48 to 49 head had 5.3% discountable
bruises overall, and 1.3% discountable loin bruises.
Level of significance = < .01
Rough handling at the feedlot of origin was a major cause of bruises. A
feedlot where rough handling occurred during weighing and loading was
compared to a feedlot which had careful, quiet handling.
The rough feedlot had 15.5% discountable bruises and the careful,
quiet feedlot had 8.35% discountable bruises.
Click here to return to the Homepage for more information on animal behavior, welfare, and care.