It is important to systematize the losses known as mortality in transport or casualtiesante mortem, therefore, this handbook was made, analyzing and describing the reason for it, quantifying and identifying the losses according to their origin, either due to heat stress in transport, pathologies from the farm or mishandling in the loading or unloading of the birds, to take measures and avoid that less economic losses are generated in the plant Avidesa Mac Pollo SA necropsy in the temperature before the processing, the weight, age, sex and important parameters in order to compare, determine the cause of death of each one of the drowned, in order to carry out an evaluation, description and analysis of the ante-mortem casualties, stipulating a specific summary of the (BAM) in the plant.It is very important to describe, analyze and evaluate each of the shortcomings that occur in different stages before the benefit in the poultry sector to take corrective measures in the different critical points to see the canal, generating a greater number of drowned in each process.