TY  - JOUR
T1  - Effect of Different Energy Levels of Diet on Feed Efficiency, Growth Rate and Carcass Characteristics of Fattening Bahmaei Lambs
AU - , Sayed-Majid Hosseini AU - , Sayed-Mostafa Akbary AU - , Naser Maheri-Sis AU - , Afshar Mirzaei Aghsaghali 
JO  - Journal of Animal and Veterinary Advances
VL  - 7
IS  - 12
SP  - 1551
EP  - 1554
PY  - 2008
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2008.1551.1554
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2008.1551.1554
KW  - Feed efficiency
KW  -growth rate
KW  -carcass
KW  -male lambs
KW  -metabolizable energy
AB  - This study was conducted to evaluate the effect of 3 experimental treatment including different metabolizable energy levels (T<SUB>1</SUB> = 2.34, T<SUB>2 </SUB>= 2.47 and T<SUB>3 </SUB>= 2.6 Mcal kg <SUP>1</SUP> DM) on performance and carcass characteristics of Iranian native sheep (Bahmaei). At the beginning of the experimental period the body weight of lambs on average was 26±1.7 kg and 90 days of age. Forty-eight Bahmaei male lambs were randomly distributed into 3 dietary treatments with 4 replicates based on completely randomized design. Total experimental period was 90 days. Average Daily Gain (ADG), Average Daily Feed Intake (ADFI), Feed Conversion  Ratio  (FCR),  live  weights  at  slaughter,  cold carcass weights and body fat weight (abdominal fat + tallow) were recorded during experimental period and after slaughtering. Metabolizable energy levels did influence the all of above mentioned parameters. The ADG in treatment 3 (T<SUB>3</SUB>) was significantly (p&lt;0.05) higher than that of treatment 1 and 2 (T<SUB>1</SUB> and T<SUB>2</SUB>). The ADFI in T<SUB>1 </SUB>was significantly (p&lt;0.05) higher than that of T<SUB>2</SUB> and T<SUB>3</SUB>. Carcasses from the T<SUB>2</SUB> and T<SUB>3</SUB> diet lambs were similar and higher than that T<SUB>1</SUB> diet. Live weight at slaughter and cold carcasses weight in T<SUB>3</SUB> was significantly higher than that of T<SUB>1 </SUB>(p&lt;0.05) while, T<SUB>2</SUB> was similar to T<SUB>1</SUB> and T<SUB>3</SUB>. The body fat weight were significantly (p&lt;0.05) higher for carcasses from T<SUB>3</SUB> diet lambs compared with those from T<SUB>1</SUB> and T<SUB>2</SUB>. This study indicated that ADG, FCR, live weights at slaughter, cold carcass weights and body fat weight (abdominal fat + tallow) were altered by different energy levels and under intensive feeding, the Bahmaei male lambs were produced desirable carcass and ADG using T<SUB>3 </SUB>diet.
ER  -