. 2008 Jun 24;120(1):1–12. doi: 10.1016/j.livsci.2008.04.013

Table 6.

Growth, slaughter and carcass traits of heifer, steer and bull progeny for the intensive and extensive grassland management systems

Animal type	Heifers^b		S.E.M.^a	Steers^c		S.E.M.^a	Bulls^b		S.E.M.^a
Grassland management system	Intensive	Extensive		Intensive	Extensive		Intensive	Extensive
Live weight (kg)
Birth	42	43	0.6	48	46	2.0	46	47	0.1
Weaning	254	253	2.7	318	320	11.9	285	287	5.4
Turnout to grass	314	314	3.4	385	384	15.1	–	–	–
Housing	472	469	3.8	549	545	17.6	–	–	–
Slaughter	518	513	4.1	657	658	22.4	571	582	8.6
Live weight gain (kg)
Birth to weaning	212	210	2.5	272	275	11.6	239	240	5.2
Winter 1	60	61	2.3	67	63	10.5	287	294	8.1
Grazing season 2	159	157	2.7	164	161	12.5	–	–	–
Winter 2	46	44	1.6	109	114	12.1	–	–	–
Birth to slaughter	476	470	3.9	614	612	21.5	525	535	8.5
Average daily gain (g)
Winter 1	386	391	14.8	441	401	73.3	1208	1238	35.4
Grazing season 2	894	885	15.3	808	796	60.6	–	–	–
Winter 2	886	838	38.1	864	901	95.2	–	–	–
Birth to slaughter	783	773	6.4	856	853	29.8	1158	1179	19.0
Carcass weight (kg)	282	281	2.5	368	370	12.7	333	335	5.2
Carcass gain per day of age (g)	465	465	4.1	514	517	17.8	734	739	11.4
Kill-out proportion (g/kg)	548	550	1.9	560	563	5.2	575	575	3.4
Carcass conformation^d	3.24	3.21	0.047	2.97	3.22	0.20	3.34	3.38	0.085
Carcass fat score ^e	3.14	3.06	0.057	4.03	4.01	0.28	2.77	2.76	0.092
Perinephric + retroperitoneal fat (kg)
(g/kg carcass)	20.9	19.3	0.68	–	–	–	20.2	20.4	0.98

^a Standard error of means; ^b = 6 years data; ^c= 2 years data; ^d,e EU Beef Carcass Classification Scheme Scale:^d 1 (poorest) to 5 (best); ^e1 (leanest) to 5 (fattest).