EVALUATION OF THE BIOLOGICAL PERFORMANCE OF SHRIMP L. vannamei IN SYSTEMS CULTURE SANITIZED WITH DIFFERENT RESIDUAL CHLORINE CONCENTRATIONS

In the aquaculture industry the biggest obstacle to overcome for a future increase in productivity are the diseases. Many of them, caused by viruses, bacteria, fun gi, parasites and even diseases undiagnosed or just emerging that have affected the aquaculture indus try and will continue to impact to the industry as it grows and develops trying to increase production to meet th e food needs of the population. In 2013, there were millions of losses in the shrimp indu stry in Mexico due to mortality  caused by two diseases: EMS and WSSV (Early  Mortality Syndrome and Syndrome  White Spot Virus, respectively). It is estimated that in that year, 70 to 80% of shrimp production. The affected states were Nayarit, Sinaloa and Son ora with more than 100 thousand hectares of shrimp aquaculture production. These states produce 80% of the shrimp at the level national and 2/3 of this production is obtained through aquaculture.

Moreover, a supposed resistance has no chance if in hatcheries and farms  they do not correctly manage the microbiological community of their crops, letting Vibrio continue being the dominant genus in the cultivation water and therefore in the digestiv e system of the shrimp and this it extends to the producer's premises, where the probability that this is dedicated or can control the microbiological community of its ponds. Many producers

they are investing correctly in maternity and pre-fattening syst ems, however, the vast majority still does not handle these phases in his favor and ends up sending organizatio ns with a higher probability of to get sick.

The disinfection of the cultre systems observes great relevance i n these times, since there is a direct relationship between pathogenic bacteria and culture shrimp diseases.