Dairy bred bulls average 1.70 kgs/day and kill out 52% at Tully

The Gene Ireland Progeny test centre at Tully, Co. Kildare recently slaughtered 30 dairy bred bulls at Slaney Foods International, Bunclody, Co. Wexford. The progeny were sired by 18 different sires across 3 different breeds HO, MO and JE.

The group consisted of 30 February and March 2017 born bulls. The average carcass weight for the group was 330 kilos. They average daily gain for the group during their 97-day performance test period was 1.70 kilos per head per day. Average growth rate within the group ranged from 1.11 kilos to 2.20 kilos per head per day.

The average kill-out for the group was 52%, with kill-out ranging from 47% to 55%. Overall the animals graded extremely well with 11 of the bulls being of R grade conformation and 19 grading in the O grade class. 100% of the 30 bulls met the carcass fat specifications of 2+ or higher, this was a great achievement for dairy bred bulls.

The average dry matter intake (DMI) per day for the group was 14.18 kilos, with bulls consuming from 11.78 to 16.37 kilos per head per day on a DMI basis. The average feed efficiency for the group was 8.52, ranging from 5.46 to 12.00. The bulls were fed hay and ad lib concentrates over their 97-day finishing period.

Overall the bulls performed exceptionally well and were gaining .88 kilos of carcass for each day they were on test at Tully. The data demonstrates the large variation in performance between dairy progeny in a bull finishing system.

See below photos of some of the progeny slaughtered.

All individual data on animals slaughtered recently can be found at the link below.

https://www.icbf.com/wp/wp-content/uploads/2019/03/Copy-of-Intake_47-FR-1.xlsx

Key points

Avg. Age of bulls 23.8 months
Number of Bulls on trial 30
Initial Liveweight 461 kgs
Average DMI 14.18 kgs
ADG range 1.10kgs – 2.20 kgs
Avg. Carcase weight 330 kgs
No. of bulls hitting carcass fat spec 100%
372219148032025
Tag Number 372219148032025
Breed JE
Sire PSQ
Age 24 months
Dry Matter Intake 14.91 kgs/day
Average Daily Gain 2.04 kgs/day
Feed Efficiency 7.31
Initial Liveweight 510 kgs
Final Liveweight 712 kgs
Carcass weight 387 kgs
Kill out 54%
Carcass confirmation and fat R=3=
372225494163387
Tag Number 372225494163387
Breed HO
Sire FR2056
Age 24 months
Dry Matter Intake 14.42 kgs/day
Average Daily Gain 1.33 kgs/day
Feed Efficiency 10.84
Initial Liveweight 468 kgs
Final Liveweight 600 kgs
Carcass weight 315 kgs
Kill out 53%
Carcass confirmation and fat O+3-
372219148082211
Tag Number 372219148082211
Breed HO
Sire JE2047
Age 23 months
Dry Matter Intake 13.44 kgs/day
Average Daily Gain 1.66 kgs/day
Feed Efficiency 8.10
Initial Liveweight 430 kgs
Final Liveweight 594 kgs
Carcass weight 313 kgs
Kill out 53%
Carcass confirmation and fat R-3=
372218487871248
Tag Number 372218487871248
Breed MO
Sire S1259
Age 24 months
Dry Matter Intake 14.14 kgs/day
Average Daily Gain 2.0 kgs/day
Feed Efficiency 7.07
Initial Liveweight 436 kgs
Final Liveweight 634 kgs
Carcass weight 342 kgs
Kill out 54%
Carcass confirmation and fat R=3-
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