Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/6023
Title: Response of skin traits to nutrition in Merino sheep differing in estimated breeding value for wool growth
Contributor(s): Li, Li (author); Oddy, Hutton (author)orcid ; Hegarty, Jennifer Shirley (author); Nolan, John V (author)orcid 
Publication Date: 2007
Handle Link: https://hdl.handle.net/1959.11/6023
Abstract: It is unclear how nutritional conditions (below or above maintenance) affect Merino follicle characteristics in sheep with different estimated breeding values (EBVs) for wool production but with similar EBVs for fibre diameter and liveweight. This was addressed in our study. Twenty castrated male Merino sheep were selected from a commercial flock, 10 with high EBVs for wool production (F+) and 10 with low EBVs (F–). The animals were offered a diet providing 1.2 times their metabolisable energy requirement for maintenance (1.2 M) for 4 weeks. After 4 weeks’ acclimatisation, five sheep from each EBV group were offered a diet of providing 0.8 times their metabolisable energy requirement for maintenance (0.8 M), and the other five from each EBV group were offered the 1.8 M diet for 5 weeks. On Day 35, one skin biopsy was taken from a shaved area on the left mid-side of each animal under local anaesthesia (subcutaneous injection of 2 ml 2% (w/v) Lignocaine), using a trephine (1.5 cm diameter). The skin sample was stored in 37% (w/v) buffered formalin (pH = 7) for skin histology analysis. Skin samples were processed by CSIRO (Armidale, NSW). The histology methods were essentially those described by Maddocks and Jackson (1988).
Publication Type: Conference Publication
Conference Name: Recent Advances in Animal Nutrition in Australia, Armidale, Australia, 2007
Source of Publication: Recent Advances in Animal Nutrition in Australia, v.16, p. 288-288
Publisher: University of New England
Place of Publication: Armidale, Australia
ISSN: 0819-4823
Field of Research (FOR): 070204 Animal Nutrition
Peer Reviewed: Yes
HERDC Category Description: E1 Refereed Scholarly Conference Publication
Other Links: http://trove.nla.gov.au/work/28256307
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Appears in Collections:Conference Publication
School of Environmental and Rural Science

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