كليدواژه :
محدوديت خوراكي , بره هاي آتاباي , بره ها , تغذيه دام وطيور , Feed restriction , Compensatory growth , Atabay lambs , علوم دامي , رشد جبراني , دامپروري
چكيده لاتين :
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.
