Abstract
This study was conducted to investigate the effect of addition the different levels of Hayicinth (Einhhornia Crassipes) instead of barely in diet on Jejunum of villi of broilers, The experiment was carried out in the Animal Prodcction Department, Faculty of Agriculture, University of Kufa, associated with the department of medical laborites Sciences / laboratory of Histology and Anatomy. A total of 300 broiler Ross type, one day age, were divided into 5 groups, each group contain 60 birds. They were subjected to five treatments as following:-group (T1): control in which they were given normal diet without any additions, Group (T2): were given 25 % of Hayicinth (Einhhornia Crassipes ) in diet daily, Group (T3): were given 50 % of Hayicinth (Einhhornia Crassipes ) in diet daily, Group (T4): were given 75 % of Hayicinth (Einhhornia Crassipes ) in diet daily and Group (T5): which were given 100 % of Hayicinth (Einhhornia Crassipes ) in diet daily. The treatment started at the beginning of one day old of age till 5 weeks. At the end of treatment a portion of Jejunum was taken for histological examination of villi. The histological examination revealed that Group (T1) control showed normal structure for the villi in the 4 main layer, while, Group (T2) had long villi, mucosa had damage in some metaplasia, epical villi was damaged and serosa with smooth muscle was regular and edematous. Group (T3) revealed long, thick hypertrophy villi, mucosa and sub mucosa was edematous and damaged, while, serosa had irregular fiber smooth muscle, intestinal glands was irregular in shape and epical villi was damaged. However, Group (T4) deducted long thin lamina properia with complete damage of mucosa, Filamentous sub mucosa without muscle fiber and intestinal glands were irregular in shape, while, Group (T5) showed sever damage of mucosa and sub mucosa, filamentous lamina properia, intestinal glands showed sever hypertrophy and irregularity in shape with some glands were damaged with cytoplasm lost its appearance and nucleus lost its shape while, serosa showed irregular muscle fiber and edematous. It was concluded that the addition of Hayicinth (Einhhornia crassipes) had adverse effect on the structure of villi of Jejunum of broiler chicks which was a dose dependent.
