Relationship of weaning weight to the mature liveweight of cashmere does on Australian farms

McGregor, B. A. and Butler, K. L. 2010, Relationship of weaning weight to the mature liveweight of cashmere does on Australian farms, Animal production science, vol. 50, no. 6, pp. 581-584, doi: 10.1071/AN09220.

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Title Relationship of weaning weight to the mature liveweight of cashmere does on Australian farms
Author(s) McGregor, B. A.ORCID iD for McGregor, B. A.
Butler, K. L.
Journal name Animal production science
Volume number 50
Issue number 6
Start page 581
End page 584
Total pages 4
Publisher CSIRO Publishing
Place of publication Collingwood, Vic.
Publication date 2010
ISSN 1836-0939
Keyword(s) farm management
mature size
Summary Median weaning weight and its relationship with the median mature liveweight of does was quantified for four commercial Australian cashmere farms in various parts of Australia. Individual liveweights, of does of all ages at the time of weaning in December, ranged from 9 to 61 kg. Individual farm means of adult does (>1 year old) ranged from 24.6 to 38.8 kg. The model for the logarithm of liveweight was: log10(liveweight) = a + br (Age + 0.6); where a, b and r are parameters that are different for each farm. The result that the r parameter differs with farm was statistically significant (P = 9.4 10-6). The percentage variance accounted for was 84.4% and the residual standard deviation was 0.042. Farms differed greatly in the median mature liveweight with some farms reaching ~44 kg and others only 31 kg. Median weaning weight was 14.1 kg (range 11.4-16.8 kg). Median weaning weight as a percentage of median mature doe liveweight on a particular farm varied from 32 to 42%. These weaning weights appear low in absolute and relative terms and thus are likely to incur production penalties.
Language eng
DOI 10.1071/AN09220
Field of Research 070202 Animal Growth and Development
Socio Economic Objective 830304 Goats
HERDC Research category C1 Refereed article in a scholarly journal
HERDC collection year 2010
Copyright notice ©2010, CSIRO
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