Type

Journal Article

Authors

Michael G. Keane
Mark McGee
Michael J Drennan

Subjects

Veterinary

Topics
dam breed type post carcass growth performance characteristics suckler cow weaning carcass composition suckler cows

Post-weaning performance and carcass characteristics of steer progency from different suckler cow breed types (2005)

Abstract In two experiments a total of 44 steer progeny of spring-calving Charolais (C) andHereford × Friesian (HF) suckler cows and C sires were slaughtered at approximately2 years of age. Following weaning they were offered silage and 1 kg of concentrate perhead daily during a 5 month winter after which they spent 7 months at pasture. InExperiment 1, animals were given a silage/concentrate diet during a finishing period ofeither 95 or 152 days. In Experiment 2, steers were offered either a daily diet of silageplus 6 kg of concentrates or concentrates to appetite plus 5 kg of silage (fresh weight)during the final 140-day finishing period. Following slaughter, an 8-rib pistola fromeach animal was dissected. For the two experiments combined C and HF progeny hadcarcass weights of 372 and 385 (s.e. 6.1) kg, proportions of carcass as pistola of 467 and454 (s.e. 2.8) g/kg and pistola meat proportions of 676 and 642 (s.e. 5.1) g/kg, respectively.All fat traits were lower for the C than HF progeny but there was no differencein carcass conformation score. Increasing slaughter weight increased carcass weight(P < 0.001), kidney plus channel fat weight (P < 0.001), and pistola fat proportion(P < 0.001) and decreased the proportions of carcass as pistola (P < 0.05), pistolameat (P < 0.01), and bone (P < 0.05). In conclusion, breed type had no effect on carcassgrowth but the C progeny had higher meat yield than the HF. Increasing slaughterweight increased fatness and reduced meat yield.
Collections Ireland -> Teagasc -> Livestock Systems
Ireland -> Teagasc -> Animal & Bioscience
Ireland -> Teagasc -> IJAFR, volume 44, 2005
Ireland -> Teagasc -> Animal & Grassland Research & Innovation Programme
Ireland -> Teagasc -> Irish Journal of Agricultural & Food Research

Full list of authors on original publication

Michael G. Keane, Mark McGee, Michael J Drennan

Experts in our system

1
Michael G. Keane
Teagasc
Total Publications: 50
 
2
Mark McGee
Teagasc
Total Publications: 81