Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/9795
Title: Female reproductive performance and its relationship with age at puberty in beef heifers of two tropically adapted genotypes in northern Australia
Contributor(s): Johnston, David (author); Barwick, Stephen (author); Burrow, Heather Mary (author); Holroyd, R (author); Fordyce, G (author)
Publication Date: 2006
Handle Link: https://hdl.handle.net/1959.11/9795
Abstract: Improved female reproductive performance (FRP) of beef breeds in northern Australia is an important means to increase profitability. However selection to improve FRP has proved difficult due to low heritabilities and late expression of traits. One trait that may influence maiden calving performance is age at puberty. Several studies have shown age at puberty is heritable in beef cattle, particularly in 'Bos taurus' breeds (e.g. Gregory et al. 1995), but limited studies (and numbers) exist for 'Bos indicus' genotypes. Vargas et al. (1998) reported, from a small study, a heritability for age at puberty in Brahmans of 0.42. However the relationship between age at puberty and subsequent measures of female fertility are inconclusive. Some studies show a favourable relationship between improved pregnancies and earlier age at puberty (Morris et al. 2000). However several others (e.g. Dow et al. 1982) have observed no relationship. The aim of this study was to estimate the heritability of FRP traits and the genetic correlation with age at puberty in 2 tropically adapted genotypes raised in northern Australian environments.
Publication Type: Conference Publication
Conference Name: 8th World Congress on Genetics Applied to Livestock Production (WCGALP), Belo Horizonte, Brazil, 13th - 18th August, 2006
Source of Publication: Proceedings of the 8th World Congress on Genetics Applied to Livestock Production
Publisher: SBMA: Sociedade Brasileira de Melhoramento Animal [Brazilian Society of Animal Breeding]
Place of Publication: Brazil
Field of Research (FOR): 070201 Animal Breeding
HERDC Category Description: E2 Non-Refereed Scholarly Conference Publication
Other Links: http://www.cabdirect.org/abstracts/20063170241.html
Statistics to Oct 2018: Visitors: 178
Views: 180
Downloads: 0
Appears in Collections:Conference Publication

Files in This Item:
2 files
File Description SizeFormat 
Show full item record

Page view(s)

58
checked on Feb 8, 2019
Google Media

Google ScholarTM

Check

SCOPUSTM   
Citations

 

WEB OF SCIENCETM
Citations

 

Items in Research UNE are protected by copyright, with all rights reserved, unless otherwise indicated.