THE EFFECT OF MOISTENING ON THE RELATIVE FEEDING VALUE OF GROUND FORAGES FED ALONE TO GROWING LAMBS AND WITH GRAIN TO FATTENING LAMBS
Forty-eight lambs were individually fed to assess the effects of moistening on the relative nutritional value of four ground forages, fed as the sole diet for 8 weeks and with 20% concentrate thereafter until the lambs were finished.Moistening the ground forages improved animal performance but the effect was not consistent for all forages. When the four forages were fed dry, lamb gains varied considerably but when the forages were moistened, gains were similar on all four forages. The "nutritive value index" reflected the relative feeding values of the dry, but not the moistened forages. During the growing period, moistening caused slight, but non-significant reductions in the digestibility of dry matter, energy, crude protein, and cellulose. Nitrogen retention was unaffected by moistening.In the finishing period, moistening the ration improved lamb gains but digestibility coefficients and nitrogen retention were unaffected. Dressing percentage was reduced as a result of moistening the ration but no other adverse effects on carcass quality or grade were found.Good average daily gains (152 g) and excellent carcass grades (35 "choice", 13 "good") obtained in this experiment indicate that lambs can be successfully finished on rations containing a high proportion of ground roughage.