Theme 19: Use of Supplements
Description
Growth of Holstein heifers was studied for 1987 grazing season to evaluate pasture-drylot systems for raising dairy replacements. Orchardgrass (Dactylis glomerata L), tall fescue (Festuca arundinacea Schreb), bluegrass (Poa pratensis L) and white (Trifolium repens L) and red clover (Trifolium pratense, L) were the principal components of the grass-legume mixture in six paddocks of 1.5 ha each. Carrying capacity was estimated at six animals/ha (3.1 animal units) and excess forage was harvested as hay to control forage growth and quality. Grazing days were 140 days. None or 2.0 kg/d of cracked corn were fed in addition to grazing in a changeover design with repeated measurements. Alternating supplementation between groups did not affect body weight gains, wither height or heart girth although average daily gain was greater when corn was fed (837 vs 581 g/d).
Included in
Effects of Different Levels of Energy Supplementation on Growth of Grazing Holstein Heifers
Growth of Holstein heifers was studied for 1987 grazing season to evaluate pasture-drylot systems for raising dairy replacements. Orchardgrass (Dactylis glomerata L), tall fescue (Festuca arundinacea Schreb), bluegrass (Poa pratensis L) and white (Trifolium repens L) and red clover (Trifolium pratense, L) were the principal components of the grass-legume mixture in six paddocks of 1.5 ha each. Carrying capacity was estimated at six animals/ha (3.1 animal units) and excess forage was harvested as hay to control forage growth and quality. Grazing days were 140 days. None or 2.0 kg/d of cracked corn were fed in addition to grazing in a changeover design with repeated measurements. Alternating supplementation between groups did not affect body weight gains, wither height or heart girth although average daily gain was greater when corn was fed (837 vs 581 g/d).
