Received: Haematological indices are essential diagnostic tools used to evaluate the health status of fish. The uses of probiotics as biological control agents in aquaculture have replaced the usage of chemotherapeutics, is an approach in the build-up in aquaculture environments. In the cultured fish, the use of probiotics in monospecies or multispecies forms has been reported to stimulate specific and non-specific immune parameters including lysozyme activities and phagocytic, expression of various cytokines as well as improvement of blood profiles of many fish increasing resistance diseases and to other environmental perturbations such as physiological stressors. Interestingly, many researchers have shown that haematological indices in fish continue to offer a valuable diagnostic tool; and progress is made in establishing a reasonable range of values for blood parameters of different fish species. Also, many interventions have shown that probiotics used in aquaculture have potential in improving blood profiles of fish; although there are not many summarised information regarding the effects of probiotics on haematological parameters in fish.
A Review on the Probiotic Effects on Haematological Parameters in Fish
use of probiotics in shrimp aquaculture | Pathogens and Disease | Oxford Academic
Along with the intensification of culture systems to meet the increasing global demands, there was an elevated risk for diseases outbreak and substantial loss for farmers. In view of several drawbacks caused by prophylactic administration of antibiotics, strict regulations have been established to ban or minimize their application in aquaculture. As an alternative to antibiotics, dietary administration of feed additives has received increasing attention during the past three decades. Probiotics, prebiotics, synbiotics and medicinal plants were among the most promising feed supplements for control or treatments of bacterial, viral and parasitic diseases of fish and shellfish. The present review summarizes and discusses the topic of potential application of probiotics as a means of disease control with comprehensive look at the available literature. The possible mode of action of probiotics Strengthening immune response, competition for binding sites, production of antibacterial substances, and competition for nutrients in providing protection against diseases is described.
Probiotic Bacteria as an Healthy Alternative for Fish Aquaculture
One of the problems of the aquaculture industry is the presence of pathogenic microorganisms whose proliferation is enhanced when the healthy quality of the culture systems do not meet comply with physical-chemical-biological parameters. In order to improve these problems, less aggressive alternatives to the environment have been sought. This is why probiotic bacteria are proposed as an alternative to the same systems where they will be applied, since they generate greater interest in not presenting a threat to the ecosystem, favor survival, improve the immune system of organisms and have antibacterial properties against pathogenic bacteria. This chapter reviews current research related to the search for marine probiotics for application in the aquaculture industry. Additionally, we deliver results from our work related to the research and application of probiotics.
Support health, performance and growth of aquatic species. Probiotics for farmed fish and shrimp are beneficial bacteria that are commonly added to aquaculture systems in order to help support health, performance and growth. Decades of research on the application of probiotics in aquaculture have been primarily driven by the need to reduce or eliminate antibiotics from production systems and improve sustainability. The important role of probiotics in aquaculture is increasing. This is primarily due to disease, which represents the biggest constraint in aquaculture, and is a huge challenge for future growth and expansion.