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A review of effects of shearing on sheep production
Smith ME, Bigham ML, Knight TW, Sumner RMW
Proceedings of the New Zealand Society of Animal Production, Volume 40, pp 215-220, Jan 1980
Proceedings of the New Zealand Society of Animal Production, Volume 40, pp 215-220, Jan 1980
Article class: Review
Subject Terms: Animal production/wastage, Bodyweight/liveweight/condition score, Disease/defect, Fungal/yeast, Growth/development, Harvesting/processing, Inflammation, Integument/skin/wool/hair/fur/feather, Liver/hepatic disease, Mycotoxicosis, Photosensitivity, Reproduction, Reproduction - female, Toxicology
Animal Type: Livestock, Production animal, Ruminant, Sheep
Publisher: New Zealand Society of Animal ProductionAbstract
The effects of once-yearly vs multiple shearing are reviewed. In the trials where shearing took place in March or July an increase in wool growth occurred. Based on returns from auction, second-shear wools show a price discount for reduced staple length. This discount and extra shearing costs need to be counterbalanced by the advantages of improved colour, reduced crutching and ease of physical handling of animals. Research indicates that time of shearing can influence liveweight gains, incidence of facial eczema, onset of oestrus, ovulation rate, mean date of lambing and lamb growth rates. The review indicates there is a need for a major increase in research on the effects of shearing on all aspects of sheep production.The whole of the literary matter of the Proceedings of the New Zealand Society of Animal Production is copyright New Zealand Society of Animal Production, Downloading this article signifies agreement with the terms and conditions of electronic access.