Effect of pre- and postpartum body development on the rebreeding of first-calf heifers

Abstract The objective of this study was to evaluate the effect of live weight and body condition score, measured at different growth stages, on the rebreeding of first-calf heifers. A total of 120 Nellore and Charolais crossbred heifers born between 2004 and 2008 were assessed. Their average age wa...

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Autores principales:	Joner,Guilherme, Alves Filho,Dari C., Brondani,Ivan L., Adams,Sander M., Moura,Amanda F., Cardoso,Gilmar S., Silva,Mauren B., Cattelam,Patrícia M. M.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal 2019
Materias:	Calving-to-conception interval calving season crossbreeding live weight at calving reproductive efficiency
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300243
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spelling	oai:scielo:S0718-162020190003002432020-01-16Effect of pre- and postpartum body development on the rebreeding of first-calf heifersJoner,GuilhermeAlves Filho,Dari C.Brondani,Ivan L.Adams,Sander M.Moura,Amanda F.Cardoso,Gilmar S.Silva,Mauren B.Cattelam,Patrícia M. M. Calving-to-conception interval calving season crossbreeding live weight at calving reproductive efficiency Abstract The objective of this study was to evaluate the effect of live weight and body condition score, measured at different growth stages, on the rebreeding of first-calf heifers. A total of 120 Nellore and Charolais crossbred heifers born between 2004 and 2008 were assessed. Their average age was 26±1 months, they were all from the same herd, and they received the same management from birth. To conduct this study, pre- and postpartum measurements of first-calf heifers were taken. The data were submitted to analysis of variance, and the means were compared using Student’s t-test at a significance level of α=0.05. A higher live weight of the heifer at 24 months enabled early calving within the first calving season (r=-0.30). First-calf heifers that rebred had a higher live weight at weaning (361 kg vs. 333 kg) than those that did not, although their live weights at calving were similar (344 kg vs. 332 kg). The rebreeding of first-calf heifers that gave birth with the same body condition score as in the first calving was dependent on positive live weight gain until the end of the following breeding season, especially during the calving-weaning period.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería ForestalCiencia e investigación agraria v.46 n.3 20192019-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300243en10.7764/rcia.v46i3.1984
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Calving-to-conception interval calving season crossbreeding live weight at calving reproductive efficiency
spellingShingle	Calving-to-conception interval calving season crossbreeding live weight at calving reproductive efficiency Joner,Guilherme Alves Filho,Dari C. Brondani,Ivan L. Adams,Sander M. Moura,Amanda F. Cardoso,Gilmar S. Silva,Mauren B. Cattelam,Patrícia M. M. Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
description	Abstract The objective of this study was to evaluate the effect of live weight and body condition score, measured at different growth stages, on the rebreeding of first-calf heifers. A total of 120 Nellore and Charolais crossbred heifers born between 2004 and 2008 were assessed. Their average age was 26±1 months, they were all from the same herd, and they received the same management from birth. To conduct this study, pre- and postpartum measurements of first-calf heifers were taken. The data were submitted to analysis of variance, and the means were compared using Student’s t-test at a significance level of α=0.05. A higher live weight of the heifer at 24 months enabled early calving within the first calving season (r=-0.30). First-calf heifers that rebred had a higher live weight at weaning (361 kg vs. 333 kg) than those that did not, although their live weights at calving were similar (344 kg vs. 332 kg). The rebreeding of first-calf heifers that gave birth with the same body condition score as in the first calving was dependent on positive live weight gain until the end of the following breeding season, especially during the calving-weaning period.
author	Joner,Guilherme Alves Filho,Dari C. Brondani,Ivan L. Adams,Sander M. Moura,Amanda F. Cardoso,Gilmar S. Silva,Mauren B. Cattelam,Patrícia M. M.
author_facet	Joner,Guilherme Alves Filho,Dari C. Brondani,Ivan L. Adams,Sander M. Moura,Amanda F. Cardoso,Gilmar S. Silva,Mauren B. Cattelam,Patrícia M. M.
author_sort	Joner,Guilherme
title	Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
title_short	Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
title_full	Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
title_fullStr	Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
title_full_unstemmed	Effect of pre- and postpartum body development on the rebreeding of first-calf heifers
title_sort	effect of pre- and postpartum body development on the rebreeding of first-calf heifers
publisher	Pontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202019000300243
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Effect of pre- and postpartum body development on the rebreeding of first-calf heifers

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