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Sheep productivity in an Astrebla grassland of south-west Queensland

Orr, D. M., Evenson, C. J., Jordan, D. J., Bowly, P. S., Lehane, K. J. and Cowan, D. C. (1988) Sheep productivity in an Astrebla grassland of south-west Queensland. The Australian Rangeland Journal, 10 (1). pp. 39-47.

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Abstract

A grazing study conducted between 1979 and 1983 assessed the seasonal trends of ewe productivity in Astrebla grassland in southwestern Queensland. This study was designed originally to compare productivity on two pastures with different compositions, however, these differences in pastures composition were not achieved.
Large differences in liveweight, wool growth and reproductive performance occurred between years in response to differences in pasture growth resulting from large variation in the seasonal incidence of rainfall. Rainfall effective for plant growth, both forbs and grasses, resulted in a high quality diet which resulted, in turn, in increased sheep productivity. Reproductive performance was particularly sensitive to the quality of the ewes diet around the time of lambing through the effect of diet quality on lamb survival and growth rate.
It is suggested that the effect of rainfall on reproductive performance is of greater importance than the yield of forbs present in the pasture.

Item Type:Article
Business groups:Animal Science
Additional Information:Reproduced with permission from © CSIRO Publishing. Access to published version is available via Publisher’s website.
Keywords:INCOMPLETE; BURNING; CAB 25/11/1998; GRAZING; LAMB-PRODUCTION; LIVEWEIGHT-GAIN; PASTURES; PLANT-COMPOSITION; PRECIPITATION; SHEEP-FEEDING; WOOL PRODUCTION
Subjects:Science > Biology > Reproduction
Animal culture > Sheep
Animal culture > Rangelands. Range management. Grazing
Animal culture > Feeds and feeding. Animal nutrition
Deposited On:07 Jan 2021 00:58
Last Modified:03 Sep 2021 16:46

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