بررسي رشد جبراني در بره هاي پرواري آتاباي (دالاق )

Investigating the compensatory growth in Atabay (Dalagh) finishing lambs

In order to investigate the compensatory growth, comparision of carcass characteristics and feed intake in Atahay lambs, an experiment was conducted using 21 male lambs. Lambs of 5-6 months with the average ofʹ35+5 kg were devided to finishing treatmants (first treatment), 30 (2ʹ6 treatment) and 60 days restriction groups (3 ` treatment). At the end of the experiment 4 lambs from each treatment were sloughtered for carcass analysis. The differences in characteristics of skin, head and leg, neck, flank+brisket, shoulder, chest and ribs, feet, back, hot carcass, cold carcass, bone carcass, hearts, kidney, lung, liver and fat-taile weights between the treatments was significant (p< 0.05). The result showed no significant differences in characteristics including full and empty gastrointestinal tract, tallow, back bone fat depth, fat carcass, back muscle carcass section and carcass length (p> 0.05). Feed conversion coefficient restricted treatments after the period of restriction compaired with control treatment was decreased (2nd treatment 12.18 and 5.98 - 3rd treatment 4.08). Daily gain increasing between the treatments in the end period was not significant (p>0.05). Therefore, the 30 days restriction treatment was prefered for optimum feeding, saving in feed consumption and carcass with less fatness.