Performance of calves born in different periods of the calving season in intensive beef cattle farming
ABSTRACT The objective of this study was to evaluate, for two years, the performance of 124 female and 105 male Braford calves born during the first and second halves of the same calving season and the effects of birth period on the development of males until slaughter, as yearlings, and of females...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Minas Gerais
2020-11-01
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| Series: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501874&tlng=en |
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| author | R.Z. Vaz J.F.P. Lobato J. Restle V.G.D. Conceição O.G.L. Ferreira J.L.B. Costa L.R. Eloy |
| author_facet | R.Z. Vaz J.F.P. Lobato J. Restle V.G.D. Conceição O.G.L. Ferreira J.L.B. Costa L.R. Eloy |
| author_sort | R.Z. Vaz |
| collection | DOAJ |
| description | ABSTRACT The objective of this study was to evaluate, for two years, the performance of 124 female and 105 male Braford calves born during the first and second halves of the same calving season and the effects of birth period on the development of males until slaughter, as yearlings, and of females until calving, after having mated at 13-15 months of age. Early-born females were heavier than those born late at weaning (119.3 vs 109.9kg; P<0.05), at the start of the breeding season (275.0 vs 263.0kg; P<0.05), and at the end of the breeding season (300.0 vs 289.5kg; P<0.05), in addition to being more fertile (70 vs 50% pregnancy rate). There was no difference (P>0.05) in the development of males born early in relation to those born late, except for weaning weight, which was higher in the former. Steers born early were ready for slaughter at a younger age (459.6 vs 490.1 days; P<0.05), and both groups (early- and late-born) had a body condition classified as fat (4.21 points). In intensive production systems, both male and female calves perform better if they are born during the first half of the calving season. |
| first_indexed | 2024-12-20T15:10:28Z |
| format | Article |
| id | doaj.art-34df1e555a754eef916e546724dd334e |
| institution | Directory Open Access Journal |
| issn | 1678-4162 |
| language | English |
| last_indexed | 2024-12-20T15:10:28Z |
| publishDate | 2020-11-01 |
| publisher | Universidade Federal de Minas Gerais |
| record_format | Article |
| series | Arquivo Brasileiro de Medicina Veterinária e Zootecnia |
| spelling | doaj.art-34df1e555a754eef916e546724dd334e2022-12-21T19:36:21ZengUniversidade Federal de Minas GeraisArquivo Brasileiro de Medicina Veterinária e Zootecnia1678-41622020-11-017251874188010.1590/1678-4162-11883Performance of calves born in different periods of the calving season in intensive beef cattle farmingR.Z. Vazhttps://orcid.org/0000-0003-4505-1277J.F.P. Lobatohttps://orcid.org/0000-0002-5948-4447J. Restlehttps://orcid.org/0000-0002-6103-4074V.G.D. Conceiçãohttps://orcid.org/0000-0002-8150-9137O.G.L. Ferreirahttps://orcid.org/0000-0003-0302-8482J.L.B. Costahttps://orcid.org/0000-0003-1328-9387L.R. Eloyhttps://orcid.org/0000-0002-5584-6498ABSTRACT The objective of this study was to evaluate, for two years, the performance of 124 female and 105 male Braford calves born during the first and second halves of the same calving season and the effects of birth period on the development of males until slaughter, as yearlings, and of females until calving, after having mated at 13-15 months of age. Early-born females were heavier than those born late at weaning (119.3 vs 109.9kg; P<0.05), at the start of the breeding season (275.0 vs 263.0kg; P<0.05), and at the end of the breeding season (300.0 vs 289.5kg; P<0.05), in addition to being more fertile (70 vs 50% pregnancy rate). There was no difference (P>0.05) in the development of males born early in relation to those born late, except for weaning weight, which was higher in the former. Steers born early were ready for slaughter at a younger age (459.6 vs 490.1 days; P<0.05), and both groups (early- and late-born) had a body condition classified as fat (4.21 points). In intensive production systems, both male and female calves perform better if they are born during the first half of the calving season.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501874&tlng=enbody conditiondevelopmentreproductionfinishing males |
| spellingShingle | R.Z. Vaz J.F.P. Lobato J. Restle V.G.D. Conceição O.G.L. Ferreira J.L.B. Costa L.R. Eloy Performance of calves born in different periods of the calving season in intensive beef cattle farming Arquivo Brasileiro de Medicina Veterinária e Zootecnia body condition development reproduction finishing males |
| title | Performance of calves born in different periods of the calving season in intensive beef cattle farming |
| title_full | Performance of calves born in different periods of the calving season in intensive beef cattle farming |
| title_fullStr | Performance of calves born in different periods of the calving season in intensive beef cattle farming |
| title_full_unstemmed | Performance of calves born in different periods of the calving season in intensive beef cattle farming |
| title_short | Performance of calves born in different periods of the calving season in intensive beef cattle farming |
| title_sort | performance of calves born in different periods of the calving season in intensive beef cattle farming |
| topic | body condition development reproduction finishing males |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000501874&tlng=en |
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