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Journal of Veterinary Research©
Volume 21(7):400-405, 2017.
Effects of
National Research Council (NRC) 1985 and 2007 diets on
performance markers in Afshari ram lambs
Amir Naghiee and Amir Davar
Froozandeh.
Department of Animal Science, Islamic Azad University, Isfahan (Khorasgan) branch, Isfahan, Iran.
ABSTRACT
Naghiee
A, Froozandeh AD., Effects of
National Research Council (NRC) 1985 and 2007 diets on
performance markers in Afshari ram lambs, Onl J Vet Res., 21(7):400-405, 2017. Performance
markers in groups of twenty 3 month old Afshari ram
lambs each, weighing 32±0.5kg fed National
Research Council (NRC) 1985 and 2007 diets are described. Sheep were vaccinated against Enterotoxaemia and fed a diet of alfalfa and barley grain with ad libitum water for 3 weeks. Lambs were
then fed NRC diets at 07.00 and 16.00 h daily. Sheep were weighed every 2 weeks
after 18 hours of fasting. Feed offered or refused was recorded daily. Daily
feed intakes, weight and feed conversion ratio were determined. In lambs fed
NRC 1981 there were no differences in weights with the NRC 2007 diet, but overall daily consumption increased (P<0.05) as well as feed
conversion during the 2nd and 4th weeks(P<0.05).
Key Words: Afshari ram lambs, Diets, NRC, Performance.