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                            Original Research
                            
                            
                            3.
                            Sex determination of cattle meat by polymerase chain 
                            reaction amplification of the amelogenin (AMELX/AMELY) 
                            gene - P. Gokulakrishnan, R. R. Kumar, B. D. Sharma, S. K. 
                            Mendiratta, D. Sharma , O. P. Malav
                            Vet World. 2012; 5(9): 526-529
              
               
              
              doi: 
              10.5455/vetworld.2012.5
26-529
              
              
               
              
              
              
   
 
              
               
               
               
              
              
              Abstract
              
                            
                            Aim: 
                            The objective of this study was to develop a 
                            simplified, efficient, and accurate protocol for 
                            sexing of cattle meat based on the amelogenin (AMELX/AMELY) 
                            gene using PCR technique which is superior to 
                            earlier work in terms of band patterns. 
                            
                             Materials 
                            and Methods: Based on the amelogenin gene 
                            located on the conservation region of X and Y 
                            chromosomes, a pair of primers was designed and the 
                            system of PCR was established to amplify a 241-bp 
                            fragment from the X chromosome in female cattle, and 
                            a 241-bp fragment from X chromosome and 178-bp 
                            fragment from the Y chromosome in male cattle, 
                            respectively. The accuracy and specificity of the 
                            primers was assessed using DNA template extracted 
                            from cattle meat samples of known sex. The protocol 
                            was subjected to a blind test showed 100% 
                            concordance, proving its accuracy and reliability. 
                            
                            
                            Results: PCR products of cattle meat samples 
                            after electrophoresis showed two bands (241, 178-bp) 
                            for tissue from male while female tissue resulted in 
                            only one (241-bp) band. 
                            
                             Conclusions: Our 
                            findings show that the PCR assay based on the 
                            amelogenin gene is reliable for sex determination in 
                            cattle meat. 
                            
                             Keywords: Amelogenin gene, 
                            Cattle meat, PCR, Sex determination