Genetics of heifer puberty and growth in tropically adapted beef breeds

J Campbell; D J Johnston

Abstract

Heifer reproductive performance is a driving factor for profitability in northern beef systems. Age at puberty (AP) directly influences conception rates and is a highly heritable early-in-life trait for the genetic improvement of female reproduction (Johnston et al. 2009). The research showed selection could occur with few major antagonisms with production traits. Recognising the relationship between AP and growth traits during sire selection has the potential to achieve desirable mating weights of pubertal heifers. The aim of this paper was to investigate the genetic relationship between age at puberty, weight at puberty (WP), and 600-day weight (600 dW) through use of sire EBVs.

Original language	English
Pages	lxiii-lxiii
Publication status	Published - 31 Jul 2022
Event	34th Biennial Conference of the Australian Society of Animal Sciences - Pullman Cairns International Hotel, Cairns, Queensland, Cairns, Queensland Duration: 5 Jul 2022 → 7 Jul 2022

Other

Other	34th Biennial Conference of the Australian Society of Animal Sciences
City	Cairns, Queensland
Period	5/07/22 → 7/07/22

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https://hdl.handle.net/1959.11/56418

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Cite this

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title = "Genetics of heifer puberty and growth in tropically adapted beef breeds",

abstract = "Heifer reproductive performance is a driving factor for profitability in northern beef systems. Age at puberty (AP) directly influences conception rates and is a highly heritable early-in-life trait for the genetic improvement of female reproduction (Johnston et al. 2009). The research showed selection could occur with few major antagonisms with production traits. Recognising the relationship between AP and growth traits during sire selection has the potential to achieve desirable mating weights of pubertal heifers. The aim of this paper was to investigate the genetic relationship between age at puberty, weight at puberty (WP), and 600-day weight (600 dW) through use of sire EBVs.",

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AB - Heifer reproductive performance is a driving factor for profitability in northern beef systems. Age at puberty (AP) directly influences conception rates and is a highly heritable early-in-life trait for the genetic improvement of female reproduction (Johnston et al. 2009). The research showed selection could occur with few major antagonisms with production traits. Recognising the relationship between AP and growth traits during sire selection has the potential to achieve desirable mating weights of pubertal heifers. The aim of this paper was to investigate the genetic relationship between age at puberty, weight at puberty (WP), and 600-day weight (600 dW) through use of sire EBVs.

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