Openly accessible

Variation of mohair staple length across Angora goat fleeces : implications for animal selection and fleece evaluation

McGregor, B. A. and Butler, K. L. 2009, Variation of mohair staple length across Angora goat fleeces : implications for animal selection and fleece evaluation, Journal of agricultural science, vol. 147, no. 4, pp. 493-501.

Attached Files
Name Description MIMEType Size Downloads
mcgregor-variationof-2009.pdf Published version application/pdf 563.54KB 38

Title Variation of mohair staple length across Angora goat fleeces : implications for animal selection and fleece evaluation
Author(s) McGregor, B. A.
Butler, K. L.
Journal name Journal of agricultural science
Volume number 147
Issue number 4
Start page 493
End page 501
Total pages 9
Publisher Cambridge University Press
Place of publication Cambridge, England
Publication date 2009-08
ISSN 0021-8596
1469-5146
Summary The present study aimed to determine how the average mohair staple length (SL) differences between nine sampling sites vary between sex and flock, to identify differences in SL variability between sampling sites as a result of between-animal and between-sire variability and to determine SL correlations between sampling sites in between-animal and between-sire variability. Australian Angora goats (n=301) from two farms in southern Australia were sampled at 12 and 18 months of age at nine sites (mid side, belly, brisket, hind flank, hip, hock, mid back, neck and shoulder). Staples were taken prior to shearing at skin level and stretched SL determined. For each shearing, differences in SL between sampling sites, how these differences were affected by farm, sex and sire, and the covariance between sites for sire and individual animal effects were investigated by restricted maximum likelihood (REML) analyses. The median mid-side SL at 12 and 18 months of age was 110 and 130 mm, respectively, but the actual range in mid-side SL was 65–165 mm. There was an anterior–posterior decline in SL with the hock being particularly short. There was no evidence that the between-site correlation of the sire effects differed from 1, indicating that genetic selection for SL at one site will be reflected in SL over the whole fleece. However, low heritabilities of SL at the hock, belly and brisket or at any site at 12 months of age were obtained. There was more variability between sites than between sires, but the between-animal variation was greater. The hip and mid-back sites can be recommended for within-flock (culling) and genetic selection for SL due to their low sampling variability, moderate heritability and ease of location.
Language eng
Field of Research 070202 Animal Growth and Development
Socio Economic Objective 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2009
Copyright notice ©2009, Cambridge University Press
Persistent URL http://hdl.handle.net/10536/DRO/DU:30028281

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
Open Access Collection
Connect to link resolver
 
Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved.

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.

Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 6 times in TR Web of Science
Scopus Citation Count Cited 6 times in Scopus
Google Scholar Search Google Scholar
Access Statistics: 418 Abstract Views, 43 File Downloads  -  Detailed Statistics
Created: Sat, 10 Apr 2010, 16:49:42 EST by Christine Rimmer

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.