Sarria et al., 1992. Livest. Res. Rural Dev., 4 (1): 80-88

Thirty-six crossbred pigs (Landrace*Yorkshire*Duroc) of 25-33 kg liveweight were allocated to 18 pens in a 3*2 factorial arrangement of: 3 levels of distillers' solubles (concentrated to 48 degrees Brix) replacing 0, 10 and 20% of sugar cane juice (basis of brix); and soyabean whole grain or extracted meal as protein source. The trial lasted 113 days and was carried out in the installations of the Instituto Mayor Campesino (IMCA) in Buga, Valle. The cane juice/distillers' solubles mixtures were fed ad libitum; the protein supplements were controlled to supply 200 g/day of protein. Mean rates of growth (g/d) for 0, 10 and 20% distillers' solubles were: 590, 679 and 810 for soyabean grain and 631, 651 and 650 for soyabean meal (SEmean ±60; P=0.28); corresponding values for dry matter intakes (kg/d) were: 1.46, 1.57, 1.95 and 1.56, 1.59, 1.70 (SEmean ±0.1; P=.07) and for feed conversion: 3.73, 3.38, 3.61 and 4.01, 3.30, 3.62 (SEmean ±0.32; P=0.7). There was an apparent synergistic effect between the distillers' solubles and the soya bean grain, with animal performance being superior on this combination of supplements. The growth rate (810 g/d) and feed conversion (3.6) on 20% distillers' solubles and soya bean grain are the highest reported so far in Colombia in pigs fed sugar cane juice.