Clinical evaluation of Bronchi-Herb oral solution in reducing side effects of respiratory infections in a broiler flock

Due to the stress following vaccination, an increase in respiratory tract injuries from mild to severe levels, as well as an increase in mortalities may occur in broiler flocks. The "Bronchi-Herb" oral solution by acting on the respiratory smooth muscles and facilitating the exit of mucous or purulent secretions, increases inhalation and exhalation and reduces the primary and secondary respiratory infections of the poultry respiratory system, and ultimately reduces the overall loss of the flock. The efficiency of flock production is increased by reducing the food conversion factor. In this study, two houses in a broiler farm in Mazandaran province, each with a capacity of about ۹۰۰۰ broiler chickens, were chosen for this experiment. Management and nutritional conditions and all health and vaccination programs were the same in both houses. From the age of ۱۷ days, in order to control the side effects of the administered respiratory vaccines, the "Bronchi Herb" oral solution was used in the house ۱at a dose of ۱.۵ litres/ ۱۰۰۰ litres of poultry drinking water (۸ hours a day) for ۵-۷ days continuously. In house ۲, a commercial Bromhexine oral solution made in Iran was used according to the manufacturer’s instructions. After observing the respiratory complications, symptoms and mortalities caused by colibacillosis in the ۳rd week of age, Florfenicol was used in drinking water for five days in both houses. One hundred chicks from each house were weighed from ۷-۴۸ days old at a weekly interval. The amount of food consumption and the final conversion coefficient were calculated at the end of the production period in both houses. The percentage of various diseases and complications and the resulting mortalities were recorded in both houses. The results of each of the aforementioned parameters in two houses were compared and analysed with appropriate statistical methods. In clinical observations, it was found that the "Bronchi-Herb" oral solution was effective in reducing respiratory complications. The use of Florfenicol in drinking water for five days in both houses reduced mortalities and improved respiratory complications. At the end of the period (۴۸ days), the total number of mortalities (۱۰۶۶ chickens) in house ۱ (Bronchi-Herb) was less than the total number of mortalities (۱۲۹۰ chickens) in house ۲ (Bromhexine). The total loss percentage of the house ۱ using Bronchi-Herb was ۱۱.۴۶ and the total loss percentage of the house ۲ using Bromhexine was ۱۳.۲۹. The average weight of chickens in two houses in each age group using Statistics ver. ۲۵ IBM SPSS and Independent sample T Test statistical method were compared with each other. Statistical analysis showed that at the ages of ۲۱, ۳۵, and ۴۲, the average weight of the chickens in house ۱ that received Bronchi- Herb was significantly higher than that of house ۲ (control). The average weight of the chickens in house ۱ at the end of the experiment was higher than that of the control house. The conversion rate was also better in the Bronchi-Herb group than the Bromhexine (control) group in the whole period. At the end of the period, the overall performance in house ۱ was better than house ۲. According to the obtained results, it appears that the Bronchi- Herb oral solution is useful and did not cause any negative impact in the flock and also it improved the performance of the flock

Keywords:

Bronchi-Herb , Bromhexine , Broiler chicken , Clinical evaluation