Molecular identification and phylogenetic analysis of Heterakis gallinae from native chickens in Egypt.

The genomic DNA was extracted from nematode parasites, Heterakis gallinae from specific host, native chickens. The polymerase chain reaction (PCR) was applied to make amplification of the DNA content that aids in the further studies. The primer was used in the PCR reactions that have the following sequences: forward (5'-GTTTCCGTAGGTGAACCTGC-3') and reverse (5'-ATATGCTTAAGTTCAGCGGGT-3'). It gave total amplified fragment markers at 914 bp. The gene sequences obtained from Egyptian H. gallinae was to make phylogenetic relationships of Egyptian H. gallinae with other nematodes on the database of an accession number (AJ876757), showing that it was nearly similar to Heterakis gallinarum.