This study was conducted to determine the fattening performance of Sönmez type lambs weaned on average at 60±5 days old. Sixty lambs were put into four different pens, as single males (15), single females (15), twin males (15) and twin females (15), and the fattening period was 56 days in length. The daily weight gains were 282.14 g, 242.49 g, 207.31 g and 179.99 g for single males, single females, twin males and twin females, respectively. The average daily weight gain in Sönmez type lambs was 227.98 g. Feed efficiency levels in Sönmez lambs were 3.98, 4.32, 4.49 and 4.63 for single males, single females, twin males and twin females, respectively. The average feed efficiency value in Sönmez type lambs was found to be 4.35.

This study was conducted to determine the fattening performance of Sönmez type lambs weaned on average at 60±5 days old. Sixty lambs were put into four different pens, as single males (15), single females (15), twin males (15) and twin females (15), and the fattening period was 56 days in length. The daily weight gains were 282.14 g, 242.49 g, 207.31 g and 179.99 g for single males, single females, twin males and twin females, respectively. The average daily weight gain in Sönmez type lambs was 227.98 g. Feed efficiency levels in Sönmez lambs were 3.98, 4.32, 4.49 and 4.63 for single males, single females, twin males and twin females, respectively. The average feed efficiency value in Sönmez type lambs was found to be 4.35.