Shrimp are animals that have a different immunity system when compared with vertebrates. Vertebrates can develop immunity towards specific pathogens(Specific Immunity) but shrimps cannot.Because of lack of specific immunity, there is a direct impact on shrimp farming as shrimps cannot be vaccinated. Due to this, there is great threat of pathogens attacking the shrimp farm and causing outbreak of diseases. Since shrimp lack an adaptive immune system to a particular pathogen, innateimmunity or Non Specific immunity is their essential form of defense. Innate immunity acts as first-line protection from the diseases and mortality threats that can potentially affect the shrimp.
Due to all these factors, disease outbreaks such as the White Spot Syndrome Virus (WSSV), the Taura syndromevirus (TSV), the Yellow Head Virus (YSV) and recent diseases like the Early Mortality Syndrome, are always considered to be major threats to the shrimp industry.
In aquatic environment the stressors like pollution, low level of oxygen, temperature variations, sorting and transfer, osmotic shock directly affect the shrimp and in turn favour the development of harmful pathogens. It is essential to develop innate immunity which protects the shrimp from the attack of pathogens to take an entry into the body. Substances which can be supplemented in feed that have immune stimulatory effects can help prepare the shrimp’s body against the risk of disease outbreaks.
Godrej Immuno-Shield builds up this immune stimulating action through bio-active compounds alongside reducing the oxidative stress and providing nutritional support. This enhances conditions in both the external and the internal environment of the animal. Immuno-shield, with its accurate mix of ingredients provides broad range immune-modulating actions. This ensures a continued boosted and sustainable immune competence in shrimp under challenging conditions such as handlings, viral infections, extreme weather conditions, or high disease pressure. Premium antioxidant activity provided by highly available organic selenium helps to reduce oxidative stress induced during immune-stimulation. Immuno-shield provides nutritional support as it consists of highly available nucleotides to support fast cell replication required to boost the haemocyte response and other cell replication during immune-stimulation.
Godrej Immuno-shield contains highly digestible dried yeast fractions from Saccharomyces cerevisiae which contains a bioactive complex consisting of glucan, mannan and chitin polymers that promotes non-specific immune defences. It also contains Chitosan-Oligo-Saccharides, extra source of nucleotides and selenium with antioxidant activity. It can be fed @ 2-4 grams per kg of feed as a top dressing to the feed.
(The author is DGM-Technical services at Godrej Agrovet Ltd. Views expressed are personal.)