Effect of different levels of rosemary oil on the productive performance and some physiological traits of broiler
journal of kerbala university,
2015, Volume 11, Issue 2, Pages 156-164
AbstractThe experiment was conducted to investigate the effect of addition of different concentrations of rosemary oil to the ration on productivity , physiological traits and carcass characteristics . The study was applied in the animal farm of the technical college AL_Musaiab for a period of 6 week, by using 120 one day old (Ross) broiler chicks , The chicks were distributed in to 3 equal treatments each treatment contained 2 replicates (20 chicken each ). The first treatment (T1) fed ordinary ration without supplementation of rosemary (control) the second and third treatment (T2 and T3) fed ordinary ration plus 2g and 4g gmKg ration respectively . The results showed that there were significant surpassing (P<0.01) of mean body weights ,weight gains , feed conversion rate and feed consumption for chicks in the T2 and T3 , significant decreasing in serum total cholesterol , low density lipoprotein( LDL) , Very low density Lipoprotein (VLDL), triglyceride and glucose. Significant increasing of High density lipoprotein (HDL) and packed cell volum (PCV) . The results showed significant increasing in carcass weight and heart weigh in T2 and T3 and significant decreas in abdominal fat. the addition of rosemary oil to the ration did not affect significantly upon the dressing percentage , Lever % and gizzard% .It was Conclude from this experiment that the addition of rosemary oil to broiler ration has led to improvement in productive and physiological traits. So we recommend possibility to use them as feed additives in the diet in order improve the productive performance of broilers projects .
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