background: accurate identification of sheep nematodes is a critical point in epidemiological studies and monitoring of drug resistance in flocks. however, due to a close morphological similarity between the eggs and larval stages of many of these nematodes,such identification is not a trivial task. there are a number of studies showing that molecular targets in ribosomal dna (internal transcri...

the major histocompatibility complex (mhc) plays a central role in the control of disease resistance and immune response. extensive genetic diversity in mhc genes provides a valuable source for genetic improvement, via selection, in many domestic animals. exon 2 of the class ii mhc, termed ovar-drb1 in domestic sheep (ovis aries), has been suggested as important disease resistance and immune re...

In Iraq, Awassi is the most widespread sheep breed on non-European origin. The adapt to a wide range of environmental conditions. Sheep farming, mainly breed, represents an essential economic activity Iraq; however, so far, only very few genetic data exist this breed. present study was performed in Biology Department, University Zakho. Thirty two Blood samples were obtained from Awassi-Iq (Ovis...

Data on 361 lambs of Mehraban (n=90), Ghezel (n=92), Ghezel × Mehraban (n=87), and Mehraban × Ghezel (n=92, sire breed listed first) were used to estimate individual Heterosisfor lamb growth. The obtained results demonstrated that lambs of purebreds of Ghezel and Mehraban showed the highest and the lowest birth weight, respectively (P

A Pseudomonas aeruginosa strain (UCBPP-PA14) is infectious both in an Arabidopsis thaliana leaf infiltration model and in a mouse full-thickness skin burn model. UCBPP-PA14 exhibits ecotype specificity for Arabidopsis, causing a range of symptoms from none to severe in four different ecotypes. In the mouse model, UCBPP-PA14 is as lethal as other well-studied P. aeruginosa strains. Mutations in ...

In this study, all the hairs and their follicles characteristics of Iranian Bakhtiari sheep were investigated. A total of 48 healthy Bakhtiari sheep (aged 5-8 months) were selected and categorized on the basis of sex (24 females and 24 males). Samples were taken as small pieces from different regions of the skin, fixed and stained with haematoxylin and eosin. The following indices in each piece...