biological factor, which may be a biological factor such as the plague of small drinkers, which is called ppr, and there is only one serotype. there is a form of it and the vaccine made from it is able to create immunity in livestock for up to 3 years and gives a suitable level of immunity , but in many diseases, vaccination is a factor in helping to prevent the disease , for example, in the foot and mouth disease that i gave as an example in all the reference books or in the reference of fao's kharbar agricultural organization, which is one of the most reliable , declares that the so-called vaccine alone cannot prevent the disease and it should. it should be combined with health, quarantine, biological security and related issues so that it can prevent the occurrence of disease . as for what mr. doctor said about the so-called power plants, we believe that solar panels can be installed on the roof of livestock farms , there is no place in our regulations that prohibits this . he explained according to the things that are for the veterinary medicine system , not for, for example, the ministry