Cytochrome b conservation between six camel breeds reared in Egypt

Area of Science:

• Genetics
• Molecular Biology
• Zoology

Background:

• Cytochrome b (cyto b) is a key mitochondrial gene.
• Assessing genetic conservation is crucial for livestock management and species identification.
• Egyptian camel breeds represent a significant genetic resource.

Purpose of the Study:

• To evaluate the conservation of cytochrome b (cyto b) gene sequences in six Egyptian camel breeds.
• To compare camel cyto b sequences with those of other livestock species.
• To determine the utility of cyto b for breed differentiation and meat adulteration detection.

Main Methods:

• Polymerase Chain Reaction (PCR) amplification of 208-bp fragments of camel mitochondrial DNA (mtDNA) cyto b.
• DNA sequencing of amplified fragments from 54 camels across six breeds.
• Sequence alignment, genetic distance calculation, and Neighbor-Joining phylogenetic tree construction.
• Comparison of camel sequences with publicly available sequences from various livestock species.

Main Results:

• Four haplotypes were identified among the six Egyptian camel breeds, with zero genetic distance between Baladi, Fallahi, and Maghrabi breeds.
• Low genetic distances were observed between Mowaled, Sodany, and Somali breeds.
• Phylogenetic analysis confirmed all studied Egyptian camel breeds belong to Camelus dromedaries and are distinct from other livestock species.
• A specific haplotype was identified for the Somali breed, and mixed haplotypes were found between Sodani and Mowaled breeds.

Conclusions:

• The cytochrome b (cyto b) sequence is highly conserved among Egyptian Camelus dromedaries breeds.
• Cyto b serves as a reliable genetic marker for differentiating camel breeds.
• The cyto b gene is effective in distinguishing between different livestock species, making it valuable for detecting adulteration in mixed meat products.