aviculture au maroc

 

study of poultry projects

 

 

 

 

 

 

 


 

Egg price increase, and H9N2!

 

Recently, the market price of eggs has been rising sharply, coinciding with the debate over the outbreak of a variant of low pathogenic avian influenza, H9N2.
The price of an egg is reached on some retailers up to 1.50 dh, which has not been familiar to the Moroccan consumer throughout the year, prompting many Moroccan consumers to wonder about the reasons for this increase.

According to the professionals of the sector this increase is mainly due to the decrease in egg production at the national level caused by the fall in laying hens hit by the H9N2 virus, whose main symptom in a hen affected by this virus is the fall in laying.

ONSSA veterinary services have also reported that this virus is not transmitted to humans in the same way as H1N1. This reassures the consumer especially if we remember 2006 when we talked about the spread of H1N1 avian influenza in the world caused by the fall in prices of poultry products due to the fear of consumers of these products and the bankruptcy of several farmers in Morocco.

In this context, professionals sounded the alarm on the situation of the poultry sector and on the prices of poultry products, where Mr. Abdlatif Zaim, President of the National Association of Egg Producers, confirmed in a statement that the H9N2 avian influenza virus is low pathogenic, it hit some countries around the world, such as Germany and America Tunisia, Egypt, Algeria and Spain, but it has never penetrated the Kingdom until the end of 2015, adding that "this type of virus of low virulence has recently entered the country, and it eliminates about 2% of poultry! But some rumours are circulating, without the confirmation of the authorities, that some farms have lost 50% to 70% of their livestock because of this virus, Mr. Zaim stressed at the same time that the services of the ONSSA will authorize the introduction of a vaccine to fight against this virus.

H9N2

 

 

H9N2 is one of the Myxovirus influenzae; a segmented single-stranded (8-segment), negative polarity, myxovirus of the family Orthomyxoviridae, responsible for influenza. It is not a virus specific to humans (epizootic).

Like other influenza viruses, it is a rod-shaped virus with a nucleoside with a so-called helical structure, it is between 80 and 120 nm long and has a gluco-lipido-protein envelope coming from the cytoplasmic membrane of the host cell and carrying spicules of two types: Haemaglutinin (HA) and Neuraminidase (NA), which makes it possible to break the bridge between sialic acid, the target of HA, and the rest of the cell for viral release at the end of budding after a cell has been infected and has produced new viruses.

 

Influenza A viruses are relatively fragile and are known to be sensitive to heat and the UV rays that inactivate them, but epidemics nevertheless occur on a long-term basis in some hot tropical and equatorial countries, including during the warm season. Their lipid envelope makes them sensitive to solvents such as ether and sodium deoxycholate and to conventional detergents if they are in sufficient direct contact with these detergents (a good hand wash should last one minute and be thorough);

They appear to be largely destroyed in the digestive tract (some may temporarily survive in the mucus of the stomach and pass the stomach barrier (whose protective mucus is rich in sialic acid, an acid that is one of the targets of the virus in the body). Influenza viruses are found in little or no human faeces except in the case of HP (highly pathogenic) viruses. Most influenza viruses, as a result of mutation, can potentially become highly pathogenic and for this reason are monitored by the World Health Organization (WHO).

β-propiolactone inactivates the virus without altering its antigenic properties and is used in the preparation of inactivated influenza vaccines.