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Pasture-based finishing of early-maturing sired suckler beef bulls at 15 or 19 months of age

Published online by Cambridge University Press:  03 October 2017

C. Lenehan ,
A. P. Moloney ,
E. G. O’Riordan ,
A. Kelly  and
M. McGee
C. Lenehan
Affiliation:
Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
A. P. Moloney
Affiliation:
Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
E. G. O’Riordan
Affiliation:
Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
A. Kelly
Affiliation:
School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Ireland
M. McGee*
Affiliation:
Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath, Ireland
*
†E-mail: mark.mcgee@teagasc.ie
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Abstract

The performance of early-maturing breed sired suckler bulls finished at pasture, with or without concentrate supplementation, at 15 or 19 months of age was evaluated. In total, 60 Aberdeen Angus-sired bulls were assigned to a two (slaughter age (SA): 15 (S15) or 19 (S19) months)×two (finishing strategies (FS): grass only or grass+barley-based concentrate) factorial arrangement. There were no (P>0.05) SA×FS interactions. Increasing SA increased carcass weight (265 v. 355 kg), kill-out proportion (542 v. 561 g/kg), conformation (6.7 v. 8.3, 1 to 15) (P<0.001) and fat (5.8 v. 6.8) scores (P<0.01), and resulted in yellower subcutaneous fat (‘b’ value, 6.6 v. 8.3) and darker muscle (‘L’ value, 30.0 v. 28.3) (P<0.01). Supplementation reduced estimated herbage intake by 0.60 and 0.47 kg dry matter (DM)/kg DM of concentrates for S15 and S19, respectively. Supplementation increased carcass weight (+6.7%, P<0.001) and kill-out proportion (+1.8%, P=0.06) but had no effect on carcass fat and conformation scores or fat and muscle colour. In conclusion, carcasses were adequately finished, with or without concentrates for S19, but not for S15. Supplementation had no effect, and age had relatively minor effects, on fat and muscle colour.

Keywords

beef cattlecarcassconcentrate supplementationgrazingpasture
Type
Full Paper
Information
Advances in Animal Biosciences , Volume 8 , Supplement s1: Improving the quality and sustainability of beef production , October 2017 , pp. s28 - s32
Copyright
© The Animal Consortium 2017 

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References

Clarke, AM, Drennan, MJ, McGee, M, Kenny, DA, Evans, RD and Berry, DP 2009. Intake, live animal scores/measurements and carcass composition and value of late-maturing beef and dairy breeds. Livestock Science 126, 57–68.CrossRefGoogle Scholar
Conroy, SB, Drennan, MJ, Kenny, DA and McGee, M 2010. The relationship of various muscular and skeletal scores and ultrasound measurements in the live animal, and carcass classification scores with carcass composition and value of bulls. Livestock Science 127, 11–21.CrossRefGoogle Scholar
Dieguez Cameroni, FD, Hornick, JL, Cabaraux, JF, Istasse, L and Dufrasne, I 2006. Less intensified grazing management with growing fattening bulls. Animal Research 55, 105–120.CrossRefGoogle Scholar
Dunne, P, Monahan, F and Moloney, A 2011. Current perspectives on the darker beef often reported from extensively-managed cattle: Does physical activity play a significant role? Livestock Science 142, 1–22.CrossRefGoogle Scholar
Dunne, PG, Monahan, FJ, O’Mara, FP and Moloney, AP 2009. Colour of bovine subcutaneous adipose tissue: a review of contributory factors, associations with carcass and meat quality and its potential utility in authentication of dietary history. Meat Science 81, 28–45.CrossRefGoogle ScholarPubMed
Finneran, E, Crosson, P, O’Kiely, P, Shalloo, L, Forristal, D and Wallace, M 2012. Stochastic simulation of the cost of home-produced feeds for ruminant livestock systems. Journal of Agricultural Science (Cambridge) 150, 123–139.CrossRefGoogle Scholar
French, P, O’Riordan, EG, O’Kiely, P, Caffrey, PJ and Moloney, AP 2001. Intake and growth of steers offered different allowances of autumn grass and concentrates. Animal Science 72, 129–138.CrossRefGoogle Scholar
Keane, MG and Allen, P 1998. Effects of production system intensity on performance, carcass composition and meat quality of beef cattle. Livestock Production Science 56, 203–214.CrossRefGoogle Scholar
Lawrence, P, Kenny, DA, Earley, B and McGee, M 2012. Grazed grass herbage intake and performance of beef heifers with predetermined phenotypic residual feed intake classification. Animal 6, 1648–1661.CrossRefGoogle ScholarPubMed
Lenehan, C, Moloney, AP, O’Riordan, EG, Kelly, A and McGee, M 2015. Finishing autumn-born bulls from pasture in the first half of the grazing season using concentrates. Agricultural Research Forum, Tullamore, Ireland. p. 39.Google Scholar
Lenehan, C, Moloney, AP, O’Riordan, EG, Kelly, A and McGee, M 2016. Comparison of rolled barley with citrus pulp as a supplement for growing cattle offered grass silage. In Book of Abstracts, 67th Annual Meeting of European Federation for Animal Science (EAAP), Belfast UK, p. 142.CrossRefGoogle Scholar
Marren, D, McGee, M, Moloney, AP, Kelly, AK, Vilaseca, M and O’Riordan, EG 2015. Concentrate supplementation of grazing suckler bulls: effects on growth, carcass and meat quality characteristics. Agricultural Research Forum, Tullamore, Ireland. p. 40.Google Scholar
McMenamin, K, Marren, D, McGee, M, Moloney, AP, Kelly, AK and O’Riordan, EG 2014. Effects of concentrate supplementation level during winter and subsequently at pasture on performance and carcass traits of late-maturing suckler bred bulls. Agricultural Research Forum, Tullamore, Ireland. p. 27.Google Scholar
McMenamin, K, Marren, D, McGee, M, Moloney, AP, Kelly, AK and O’Riordan, EG 2015a. A comparison of late-maturing suckler-bred bulls and steers in two contrasting production systems. Agricultural Research Forum, Tullamore, Ireland. p. 53.Google Scholar
McMenamin, K, McGee, M, Moloney, AP, Kelly, AK and O’Riordan, EG 2015b. The production of suckler bulls at 16 months of age: a comparison of pasture and indoor finishing. Agricultural Research Forum, Tullamore, Ireland. p. 57.Google Scholar
McMenamin, K, McGee, M, Moloney, AP, Kelly, AK and O’Riordan, EG 2016. Grass-based production systems for late-maturing sired suckler bulls. In Book of Abstracts, 67th Annual Meeting of EAAP, Belfast, UK, p. 139.Google Scholar
Moloney, AP and Richardson, IR 2013. Sensory characteristics of muscle from Angus×Holstein/Friesian and Belgian Blue×Holstein/Friesian heifers slaughtered at two ages. Agricultural Research Forum, Tullamore, Ireland. p. 32.Google Scholar
O’Riordan, EG, Crosson, P and McGee, M 2011. Finishing male cattle from the beef suckler herd. Irish Grassland Association Journal 45, 131–146.Google Scholar
O’Riordan, EG, McGee, M, Moloney, AP and Crosson, P 2012. Bulls from the beef cow herd: effect of system of production on growth and carcass characteristics. Agricultural Research Forum, Tullamore, Ireland. p. 53.Google Scholar
Pavan, E and Duckett, SK 2008. Corn oil or corn grain supplementation to steers grazing endophyte-free tall fescue. I. Effects on in vivo digestibility, performance, and carcass quality. Journal of Animal Science 86, 3215–3223.CrossRefGoogle ScholarPubMed
Rosa, HJD, Rego, OA, Silva, CCG, Alves, SP, Alfaia, CMM, Prates, JAM and Bessa, RJB 2014. Effect of corn supplementation of grass finishing of Holstein bulls on fatty acid composition of meat lipids. Journal of Animal Science 92, 3701–3714.CrossRefGoogle ScholarPubMed
Statistical Analysis Software 2011. Statistical analysis software version 9.3. SAS Institute Inc, Cary, NC, USA.Google Scholar
Tarrant, PV 1989. Animal behaviour and environment in the dark-cutting condition in beef-a review. Irish Journal of Food Science and Technology 13, 1–21.Google Scholar