Abstract
Twenty percent of forage farmland was devoted to seeded and native pastures in 1991. Common white clover is widely found in native pastures but ladino clover is the main legume recommended. Timothy is the most popular grass for seeded pasture and its yield is increased by N fertilization. More than 30% ladino in pasture decreases the N fertilizer requirement. High fertilization of pasture where beef steers are kept at high stocking rates and moderately fertilized pasture where beef steers are kept at low stocking rates result in similar average daily gains. Excessive steer stocking rates can result in decreased herbage production at the end of the growing season which results in decreased weight gain. However, feeding concentrate can compensate for herbage shortage and maintain weight gain of steers with a high stocking rate similar to that of unsupplemented animals on pasture with a low stocking rate. The difference in total beef production per hectare between heavily and moderately fertilized pastures is only 10% higher for the former when herbage surpluses conserved as silage and hay are fed to steers during winter. When herbage allowance is not limiting, there appears to be no advantage in supplementing grazing cattle with concentrate or protein. Key words: Pasture, grazing, dairy cattle, beef cattle, sheep
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