Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers
The effect of extending the pen-feeding period of non-implanted feedlot steers beyond the 8.0 mm fat thickness (FT) endpoint on performance, carcass and meat traits was evaluated. Sixty-four medium-sized British steers (308 ± 26 kg) were grouped into four blocks by weight and housed in 16 pens. Pens within each block were assigned to one of four finishing periods: 64, 91, 119 and 147 days on feed (DOF). The first harvest (64 DOF) was defined as the projected days to attain 8.0 mm FT. From the 8.0–13.8 mm FT endpoints (64 and 147 DOF, respectively), daily shrunk body weight (SBW) feed conversion increased from 9.98 to 15.76 kg/kg (P < 0.001), while daily carcass weight (CW) feed conversion increased from 15.34 to 18.27 kg/kg (P < 0.001). Carcass transfer (CW gain to SBW gain ratio) increased from 0.67 to 0.86 kg/kg. FT and marbling score increased at increasing rates during the finishing period (P < 0.001), whereas rib eye area increased at decreasing rates (P < 0.001). Extending the feeding period tended to improve meat tenderness at three days of ageing (P = 0.066), while there was no response at 14 days of ageing (P > 0.10). Overall, the 8.0 mm FT endpoint for non-implanted steers corresponded to proper performance and adequate meat quality.
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Polish Academy of Sciences
2022-06-20
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Subjects: | Buey, Alimentación de los Animales, Engorde, Carne, Feedlot, Bullocks, Animal Feeding, Fattening, Meat, Feedlots, Novillo, |
Online Access: | http://hdl.handle.net/20.500.12123/12837 http://www.jafs.com.pl/Extending-the-feeding-period-beyond-8-0-mm-of-subcutaneous-nfat-reduces-feed-efficiency,151153,0,2.html https://doi.org/10.22358/jafs/151153/2022 |
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oai:localhost:20.500.12123-128372022-09-12T10:14:09Z Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers Zurbriggen, Gabriel Alberto Maglietti, Carlos Sebastian Pouzo, Laura Beatriz Testa, Maria Laura Riffel, Sebastián L. Elizalde, Juan Carlos Pavan, Enrique Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo The effect of extending the pen-feeding period of non-implanted feedlot steers beyond the 8.0 mm fat thickness (FT) endpoint on performance, carcass and meat traits was evaluated. Sixty-four medium-sized British steers (308 ± 26 kg) were grouped into four blocks by weight and housed in 16 pens. Pens within each block were assigned to one of four finishing periods: 64, 91, 119 and 147 days on feed (DOF). The first harvest (64 DOF) was defined as the projected days to attain 8.0 mm FT. From the 8.0–13.8 mm FT endpoints (64 and 147 DOF, respectively), daily shrunk body weight (SBW) feed conversion increased from 9.98 to 15.76 kg/kg (P < 0.001), while daily carcass weight (CW) feed conversion increased from 15.34 to 18.27 kg/kg (P < 0.001). Carcass transfer (CW gain to SBW gain ratio) increased from 0.67 to 0.86 kg/kg. FT and marbling score increased at increasing rates during the finishing period (P < 0.001), whereas rib eye area increased at decreasing rates (P < 0.001). Extending the feeding period tended to improve meat tenderness at three days of ageing (P = 0.066), while there was no response at 14 days of ageing (P > 0.10). Overall, the 8.0 mm FT endpoint for non-implanted steers corresponded to proper performance and adequate meat quality. EEA Marcos Juárez Fil: Zurbriggen, Guillermo Alberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Marcos Juárez; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Universidad Nacional de Rosario. Facultad de Ciencias Agrarias. Departamento de Producción Animal; Argentina Fil: Maglietti, Carlos Sebastián. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Pouzo, Laura Beatriz. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata, Facultad de Ciencias Agrarias; Argentina Fil: Testa, María Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Fil: Riffel, S. Actividad privada; Argentina Fil: Elizalde, J. C. Actividad privada; Argentina Fil: Pavan, Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. 2022-09-09T13:18:30Z 2022-09-09T13:18:30Z 2022-06-20 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion http://hdl.handle.net/20.500.12123/12837 http://www.jafs.com.pl/Extending-the-feeding-period-beyond-8-0-mm-of-subcutaneous-nfat-reduces-feed-efficiency,151153,0,2.html 2719-8448 1230-1388 https://doi.org/10.22358/jafs/151153/2022 eng info:eu-repograntAgreement/INTA/2019-PE-E7-I517-001/2019-PE-E7-I517-001/AR./Calidad nutricional y sensorial de alimentos y aptitud tecnológica de materia prima asociada a sistemas y territorios productivos con foco en las demandas del consumidor. info:eu-repo/semantics/openAccess application/pdf Polish Academy of Sciences Journal of Animal and Feed Sciences 31 (4) : 1-11 (2022) |
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Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo |
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Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo Zurbriggen, Gabriel Alberto Maglietti, Carlos Sebastian Pouzo, Laura Beatriz Testa, Maria Laura Riffel, Sebastián L. Elizalde, Juan Carlos Pavan, Enrique Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
description |
The effect of extending the pen-feeding period of non-implanted feedlot steers beyond the 8.0 mm fat thickness (FT) endpoint on performance, carcass and meat traits was evaluated. Sixty-four medium-sized British steers (308 ± 26 kg) were grouped into four blocks by weight and housed in 16 pens. Pens within each block were assigned to one of four finishing periods: 64, 91, 119 and 147 days on feed (DOF). The first harvest (64 DOF) was defined as the projected days to attain 8.0 mm FT. From the 8.0–13.8 mm FT endpoints (64 and 147 DOF, respectively), daily shrunk body weight (SBW) feed conversion increased from 9.98 to 15.76 kg/kg (P < 0.001), while daily carcass weight (CW) feed conversion increased from 15.34 to 18.27 kg/kg (P < 0.001). Carcass transfer (CW gain to SBW gain ratio) increased from 0.67 to 0.86 kg/kg. FT and marbling score increased at increasing rates during the finishing period (P < 0.001), whereas rib eye area increased at decreasing rates (P < 0.001). Extending the feeding period tended to improve meat tenderness at three days of ageing (P = 0.066), while there was no response at 14 days of ageing (P > 0.10). Overall, the 8.0 mm FT endpoint for non-implanted steers corresponded to proper performance and adequate meat quality. |
format |
info:ar-repo/semantics/artículo |
topic_facet |
Buey Alimentación de los Animales Engorde Carne Feedlot Bullocks Animal Feeding Fattening Meat Feedlots Novillo |
author |
Zurbriggen, Gabriel Alberto Maglietti, Carlos Sebastian Pouzo, Laura Beatriz Testa, Maria Laura Riffel, Sebastián L. Elizalde, Juan Carlos Pavan, Enrique |
author_facet |
Zurbriggen, Gabriel Alberto Maglietti, Carlos Sebastian Pouzo, Laura Beatriz Testa, Maria Laura Riffel, Sebastián L. Elizalde, Juan Carlos Pavan, Enrique |
author_sort |
Zurbriggen, Gabriel Alberto |
title |
Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
title_short |
Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
title_full |
Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
title_fullStr |
Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
title_full_unstemmed |
Extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
title_sort |
extending the feeding period beyond 8.0 mm of subcutaneous fat reduces feed efficiency without improving meat colour and tenderness of non-implanted feedlot steers |
publisher |
Polish Academy of Sciences |
publishDate |
2022-06-20 |
url |
http://hdl.handle.net/20.500.12123/12837 http://www.jafs.com.pl/Extending-the-feeding-period-beyond-8-0-mm-of-subcutaneous-nfat-reduces-feed-efficiency,151153,0,2.html https://doi.org/10.22358/jafs/151153/2022 |
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