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    Effect of changes in protein intake under energy restricted conditions on fattening performance and various organ weights in lambs
    (2006) Yurtman, I. Yaman; Coskuntuna, Levent
    The aim of the present study was to investigate the effect of changes in protein intake under energy restricted conditions on fattening performance and various organ weights in lambs. Three concentrate feed mixture differing in CP but iso-energetic were prepared for an 84 day study. Lambs in AL group were offered concentrate feed mix (13.15% CP and 2567 kcal ME kg-1) at ad libitum level, whereas lambs in RP1 (15.71% CP and 2563 kcal ME kg-1) and RP2 (18.98% CP and 2564 kcal ME kg-1) groups were offered concentrate feed mix at 85% of the daily mean dry matter intake of AL group. The treatments had significant effects on live weight gain, daily feed and nutrients intakes (p<0.05), but no effect on feed conversion efficiency (p>0.05). Restriction in energy caused a decrease in liver, reticulorumen and heart+lungs weights (p<0.05). The results of the present study suggest that restrictions used in this study in energy intake resulted in significant decreases in live weight gain and ration manipulations ensuring fixed or increased protein intake did not elevate this problem. © 2006 Asian Network for Scientific Information.