author(s)
Huma Rizwana, Mansoor Ahmed, Syed Shahzad Ali, Syed Suhail Ahmed, Muhammad Haroon Baloch and Attique Behan

abstract
The experiment comprised of 12 male Dumbi lambs, divided equally in two groups i.e. A (semi­­­-intensive management) and B (intensive management). Lambs in group A were fed green fodder + self prepared concentrate mixture and also allowed grazing, while the lambs in group B were fed green fodder + self prepared concentrate mixture. The results indicated that the male Dumbi lambs in group A (semi-intensive management system) utilized the feed better than their counterparts in group B (intensive management system). The average live body weight of group A at the end of week 1, 2, 3, 4 and 5 was higher than group B. Similar pattern was found in the body weight of male Dumbi lambs in group A & B. The pre-slaughter body weight of lambs in group A and B demonstrated significant difference where group A showed higher body weight than group B. Similarly, dressed carcass, neck weight, shoulder weight, thorax weight, loin and flank weight, leg weight and weight of kidneys of group A was higher than group B. No mortality was recorded in both groups during the experiment. The total feed cost on the lambs of group A ( Semi+Intensive management) and B (intensive management) was Rs. 840/lamb equally, but the weight gained by the lambs in groups A was higher than group B whereas, on average, each lamb was sold at the price of Rs. 4225 (group A) and 3950(group B) per lamb. After deduction of total production costs, the net profit earned in group A was higher than group B. It was concluded that growth, carcass characteristics and economic parameters of male Dumbi sheep lambs were remarkably improved under semi-intensive management system over intensive management; which emphasize the significance of grazing of these lambs in addition to their feeding program.