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Paper Information

Journal:   JOURNAL OF AGRICULTURAL SCIENCE (UNIVERSITY OF TABRIZ)   2001 , Volume 11 , Number 2; Page(s) 79 To 89.
 
Paper: 

EFFECTS OF ENERGY LEVEL OF THE DIET AND SLAUGHTER WEIGHTS ON FEEDLOT PERFORMANCE AND SOME NONCARCASS TRAITS OF LORI-BAKHTIARI RAM LAMBS

 
 
Author(s):  SHADNOUSH G., GHORBANI GH.R., EDRISI M.A.
 
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Abstract: 

Effect of three slaughter weights (45, 52.5 and 60 kg) and two metabolizable energy levels (2.4 and 2.6 Mcal/kg) were studied on growth performance, average daily gain (ADG), feed conversion (FC) and some noncarcass traits of 53 Lori- Bakhtiari ram lambs. Levels of energy had a significant effect (P<0.05) on the final weights of the lambs but ADG and FC were not affected by the levels of energy. ADG and FC for lambs slaughtered at 45 kg were significantly lower (P<0.05) and higher comported to 52.5 and 60 kg, respectively. Levels of energy had no significant effect on the amount of fat deposited in different parts of the body except around scortum. The amounts of fat deposited around the kidney, scortum, omentum, and total internal fat for lambs slaughtered at 60 kg were significantly higher (P<0.05) than two other slaughter weights. The results indicated that the diet with 2.4 Mcal/kg performed as well as the 2.6 Mcal/kg diet, and 52.5 kg slaughter weight is the optimal slughter weight for Lori-Bakhtiariram lambs.

 
Keyword(s): BAKHTIARI LAMB, ENERGY, FEEDLOT PERFORMANCE, LORI, SLAUGHTER WEIGHT
 
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