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Poor lamb survival pre-weaning is a major source of reproductive inefficiency in Australian sheep flocks. While nutrition and management options have been extensively researched and promoted to improve lamb survival, the present review focuses on the prospects for obtaining genetic gain and helps...

Brien, F. D.; Cloete, S. W. P.; Fogarty, N. M.; Greeff, J. C.; Hebart, M. L.; Hiendleder, S.; Edwards, J. E. H.; Kelly, J. M.; Kind, K. L.; Kleemann, D. O.; Plush, K. L.; Miller, D. R.
CSIRO, Collingwood, Australia
Animal Production Science, 2014, 54, 6, pp 667-693

Two sets of data were considered; the 1st set included progeny of all selected rams retained for 2 breeding seasons, while the 2nd set included progeny of all available rams. Half-sib h2s were obtained for components of reproductive rate within age groups, as well as averaged over 2-5 lambing...

Cloete, S. W. P.; Heydenrych, H. J.
South African Journal of Animal Science, 1987, 17, 1, pp 1-7