PIG FATTENING WITH HOME PROTEIN MOLASSES AND SWILLS

Two experiments were carried out with the objective of comparing swill s (S) and feeds and other variants where home protein molasses (HPM) a nd molasses B(MB) are employed in experiment 1. One hundred and sixty two pigs with an initial live weight of 27 kg from a rotational cross using Duroc, Landrace, Yorkshire and Hampshire were used, The design w as a random block with three treatments and six replications, The two variants evaluated were: to reduce in both treatments the supply of sw ills while concentrates were maintained or diminished in 25%, Daily ga in was not affected (501, 487 and 537 g), This allowed to reduce feed conversion (1,8, 1.3 and 1,6 kg/kg of gain) and that of swill (16,3, 9 ,7 and 8,7) compared to the control and when feed was reduced or not r espectively. In experiment 2 one hundred and twenty sixty pigs with ch aracteristics similar to experiment 1 were used. Furthermore, the same design with three treatments and six replications was employed. The t reatments were: to substitute the traditional system another where 39% of swills and 25% of concentrations were reduced and as variants a de crease 0.3 of traditional protein sources was gain was similar (352, 4 11 end 358 g). Feed conversion of feed was lower (2.55, 1.65 and 1.85) as well as that of protein sources (0,80, 0,36 and 0.25) and swill (2 5.3, 13.4 and 15.0) with those animals under the traditional feeding s ystem and the evaluated alternatives (32 and 63% of protein source sub stitution) respectively. Thus, it is feasible to prepare variants wher e 39 or 45% of the swills and 25% of the feed are reduced end also fee d formulation with a lower content of crude protein.