Effect of adding different levels of crushed leaves of thymus vulgaris to the diet on productive performance of white laying hens (Shever)

Abstract

Abstract This study was conducted at the poultry farm belong to general health, College of Veterinary Medicine University of Al-Anbar from 1/4/2010 to 18/8/2010 (140 days). This study was investigate the effect of adding different levels of crushed leaves of thymus vulgaris to layer diet on productive performances. Sixty three Shevar white laying hens at age 27 weeks were used in this study. The hens were individually weighed and randomly distributed in to three treatments and each treatment with three replicates (7/hens/ replicate) as follows: T1 (control) without any addition, T2 and T3 included addition of 0.5, 1.0% crushed thymus vulgaris respectively. The results showed significant improvement (P<0.01) for all addition treatment in accumulative egg production (H.D%), egg weight, egg mass and feed conversion coefficient as compared with control treatment. The results showed significant improvement (P<0.01) for treatment with added thymus vulgaris at levels 1.0% in feed intake as compared with other treatments