Effect of Nigella sativa and Thymus vulgaris alone or combination on Ascaridia galli of laying hens

Abstract

The present experiment aimed to study the ability of two type of plant  Nigella sativa and Thymus vulgaris and their mixture to prevent Ascaris infection in laying hens . A total of 120 ISA Brown hens, 27 weeks old were used in this experiment .Hens were randomly distributed into 4 treated groups of 12 hens each . each treatment was constituted  of 3 replicates with 4 hens. the two plant extract were supplemented to the diet at the rate of   0.25 , 0.5 , 0.75 %  alone or as a mixture from both of them .Results revealed that the addition of thymus at levels 0.5 , 0.75 %  to the diet have an effect on the absence of Ascaridia galli at the first week from the experiment .while observed often the addition of Nigella sativa at level  0.25 and 0.5 to the diet have an effect on the absence of Ascaridia galli at the last two week from the experiment it has been observed that the addition of the Thymus Vulgaris and  Nigella  sativa   a mixture at all levels to the diet have an effect on the absence f the Ascaridia galli in the feces of laying hens at most weeks of the experiment.