
%0 Journal Article
%A Brand, T. S. 
%A Franck, F. 
%A Durand, A. 
%A Coetzee, J. 
%T Use of varying combinations of energy and protein sources as supplementary feed for lambing ewes grazing cereal stubble
%J Australian Journal of Experimental Agriculture
%D 1997/03/06
%V 37
%N 1
%P 1-9
%K 
%R https://doi.org/10.1071/EA95168
%U https://www.publish.csiro.au/paper/EA95168 
%X Summary. Three feeding trials compared production of lambing ewes grazing stubbles and fed different combinations of energy and protein supplements as loose licks. Each experiment had 2 treatments in a 2 x 2 factorial design. Experiment 1 compared urea (12.5 g/ewe. day) with fish meal (100 g/ewe. day) when fed with molasses (100 g/ewe. day) for 38 days during late pregnancy. Fish meal increased liveweight gain (from 2.0 to 5.7 kg) and wool growth (20%) but urea had no effect. In experiment 2, urea (12.5 g/ewe. day) was fed in combination with molasses (200 g/ewe. day) or barley meal (200 g/ewe. day) for 63 days during late pregnancy (last 6 weeks) and early lactation. Ewes supplemented with the barley&#8211;urea combination gained 5.6 kg during the last 6 weeks of pregnancy compared with 0.40 kg for barley and the 1.02 and 1.34 kg weight loss for ewes receiving molasses and the molasses&#8211;urea combination, respectively. Experiment 3 compared urea (12.5 g/ewe. day) with sweet lupin meal (106 g/ewe. day) when fed with barley meal (200 g/ewe. day) for 56 days during late pregnancy (last 4 weeks) and lactation. Sweet lupin meal improved the liveweight change of ewes during pregnancy (from 160 to 200 g/ewe. day) as well as the birth weight of lambs (400 g) but urea had no effect. The performance of lambing ewes grazing low-quality pasture at a high stocking density (&#62;4.5 ewes/ha) for a long period (&#62;130 days) can be improved by relatively low amounts of supplements such as fish meal, sweet lupin meal and barley&#8211;urea. 
