Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot
The present study aimed to investigate whether different lines of a composite breed (5/8 Charolais × 3/8 Zebu), formed at different times, and genetically improved, would result in differences in animal performance, enteric methane emissions, and carcass traits. Forty-six Canchim steers (15...
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MDPI AG
2020-02-01
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| Series: | Animals |
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| Online Access: | https://www.mdpi.com/2076-2615/10/2/303 |
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| author | Paulo Méo-Filho Alexandre Berndt Cintia R. Marcondes André F. Pedroso Leandro S. Sakamoto Daniella F. V. Boas Paulo H. M. Rodrigues M. Jordana Rivero Ives C. S. Bueno |
| author_facet | Paulo Méo-Filho Alexandre Berndt Cintia R. Marcondes André F. Pedroso Leandro S. Sakamoto Daniella F. V. Boas Paulo H. M. Rodrigues M. Jordana Rivero Ives C. S. Bueno |
| author_sort | Paulo Méo-Filho |
| collection | DOAJ |
| description | The present study aimed to investigate whether different lines of a composite breed (5/8 Charolais × 3/8 Zebu), formed at different times, and genetically improved, would result in differences in animal performance, enteric methane emissions, and carcass traits. Forty-six Canchim steers (15 months, 280 ± 33 kg liveweight) from three different lines were used: old, new, and their cross. These three breed lines were considered the treatments (arranged in four randomized blocks based on initial liveweight) and were evaluated under grazing and feedlot conditions in relation to the performance and emission of enteric methane. During the grazing period, the new line was found to be superior to the old only in relation to the average daily liveweight gain (0.692 vs. 0.547 kg/day), and with no differences in relation to the cross line (0.692 vs. 0.620). In the feedlot finishing phase, only the average daily liveweight gain was significantly higher in the new line compared to the cross and old line (1.44 vs. 1.32 and 1.23 kg/day). The new and cross lines demonstrated higher dry matter intake when compared to the old line (10.25 and 10.42 vs. 9.11 kg/day), with the crossline animals demonstrating the best feed conversion. The new line showed higher enteric methane emissions compared to the old line (178 vs. 156 g/day). The line had an effect on the carcass dressing of the animals, with greater fat thickness in carcasses from the new and cross lines than the old line (4.4 and 3.8 vs. 3.2 mm). Canchim cattle selected for improved productive performance characteristics does not guarantee animals with lower methane emissions under grazing conditions; while in feedlots, can lead to increased daily feed consumption, and hence, to higher emissions of methane. |
| first_indexed | 2024-12-13T07:43:01Z |
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| institution | Directory Open Access Journal |
| issn | 2076-2615 |
| language | English |
| last_indexed | 2024-12-13T07:43:01Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Animals |
| spelling | doaj.art-595a15d79bda43d98964552a33ecebc92022-12-21T23:54:55ZengMDPI AGAnimals2076-26152020-02-0110230310.3390/ani10020303ani10020303Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in FeedlotPaulo Méo-Filho0Alexandre Berndt1Cintia R. Marcondes2André F. Pedroso3Leandro S. Sakamoto4Daniella F. V. Boas5Paulo H. M. Rodrigues6M. Jordana Rivero7Ives C. S. Bueno8Faculty of Animal Science and Food Engineering, University of São Paulo, 225 Duque de Caxias Norte Ave, Pirassununga, São Paulo 13635-900, BrazilEmbrapa Southeast Livestock, Rodovia Washington Luiz, km 234, São Carlos, São Paulo 13560-970, BrazilEmbrapa Southeast Livestock, Rodovia Washington Luiz, km 234, São Carlos, São Paulo 13560-970, BrazilEmbrapa Southeast Livestock, Rodovia Washington Luiz, km 234, São Carlos, São Paulo 13560-970, BrazilFaculty of Animal Science and Food Engineering, University of São Paulo, 225 Duque de Caxias Norte Ave, Pirassununga, São Paulo 13635-900, BrazilEmbrapa Southeast Livestock, Rodovia Washington Luiz, km 234, São Carlos, São Paulo 13560-970, BrazilFaculty of Veterinary Medicine and Animal Science, University of São Paulo, Duque de Caxias North Ave, Pirassununga, São Paulo 13635-900, BrazilRothamsted Research, North Wyke, Okehampton, Devon EX20 2SB, UKFaculty of Animal Science and Food Engineering, University of São Paulo, 225 Duque de Caxias Norte Ave, Pirassununga, São Paulo 13635-900, BrazilThe present study aimed to investigate whether different lines of a composite breed (5/8 Charolais × 3/8 Zebu), formed at different times, and genetically improved, would result in differences in animal performance, enteric methane emissions, and carcass traits. Forty-six Canchim steers (15 months, 280 ± 33 kg liveweight) from three different lines were used: old, new, and their cross. These three breed lines were considered the treatments (arranged in four randomized blocks based on initial liveweight) and were evaluated under grazing and feedlot conditions in relation to the performance and emission of enteric methane. During the grazing period, the new line was found to be superior to the old only in relation to the average daily liveweight gain (0.692 vs. 0.547 kg/day), and with no differences in relation to the cross line (0.692 vs. 0.620). In the feedlot finishing phase, only the average daily liveweight gain was significantly higher in the new line compared to the cross and old line (1.44 vs. 1.32 and 1.23 kg/day). The new and cross lines demonstrated higher dry matter intake when compared to the old line (10.25 and 10.42 vs. 9.11 kg/day), with the crossline animals demonstrating the best feed conversion. The new line showed higher enteric methane emissions compared to the old line (178 vs. 156 g/day). The line had an effect on the carcass dressing of the animals, with greater fat thickness in carcasses from the new and cross lines than the old line (4.4 and 3.8 vs. 3.2 mm). Canchim cattle selected for improved productive performance characteristics does not guarantee animals with lower methane emissions under grazing conditions; while in feedlots, can lead to increased daily feed consumption, and hence, to higher emissions of methane.https://www.mdpi.com/2076-2615/10/2/303beef cattlegeneticsgreenhouse gasesgrowth performancenutrition |
| spellingShingle | Paulo Méo-Filho Alexandre Berndt Cintia R. Marcondes André F. Pedroso Leandro S. Sakamoto Daniella F. V. Boas Paulo H. M. Rodrigues M. Jordana Rivero Ives C. S. Bueno Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot Animals beef cattle genetics greenhouse gases growth performance nutrition |
| title | Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot |
| title_full | Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot |
| title_fullStr | Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot |
| title_full_unstemmed | Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot |
| title_short | Methane Emissions, Performance and Carcass Characteristics of Different Lines of Beef Steers Reared on Pasture and Finished in Feedlot |
| title_sort | methane emissions performance and carcass characteristics of different lines of beef steers reared on pasture and finished in feedlot |
| topic | beef cattle genetics greenhouse gases growth performance nutrition |
| url | https://www.mdpi.com/2076-2615/10/2/303 |
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