In duck and goose farming, doxycycline is an important antimicrobial drug. It belongs to the tetracycline class and has more than ten times more antimicrobial activity than oxytetracycline. However, doxycycline is less stable and is susceptible to chemical reactions due to light, temperature, and metal ions. Therefore, there are some details that need to be paid attention to when using doxycycline.
Doxycycline should not be mixed with alkaline drugs to give ducks and geese drinking water or injection. This is because doxycycline is more acidic in aqueous solution and may reduce its antimicrobial effect when mixed with alkaline drugs.
Doxycycline is given to ducks and geese at a very wide range of safe doses, and decades of adverse reaction monitoring have shown that it is very safe for ducks and geese. After doxycycline is administered by drinking water, ducks and geese are rapidly absorbed and bioavailable after oral administration, and the drug distribution volume in the body is very large. 
Doxycycline is very rapidly distributed in ducks and geese, which makes it very suitable for use in respiratory diseases in ducks and geese. Doxycycline is mainly inactivated in the liver in a binding or complexing manner, and then secreted into the intestine through bile and excreted with feces;The other part, doxycycline, can be excreted through the kidneys. From the perspective of this metabolic pathway, its impact on the main organs and tissues of ducks and geese is very small. It should be noted that when doxycycline injection is used for intramuscular injection in ducks and geese, it may have a strong irritation to the muscles, causing the ducks and geese to feel pain. Therefore, when using doxycycline, it is necessary to choose the appropriate dosing method according to the specific situation. 
It should be noted that taking doxycycline in large quantities may inhibit the sensitive flora in the intestine, so that drug-resistant bacteria can be selectively enriched, resulting in dysbiosis in the intestine, resulting in superinfection. Therefore, caution is needed when using doxycycline to avoid abuse. Creative Inspiration Center
Doxycycline is an effective antimicrobial drug that has a wide range of applications in duck and goose breeding. However, there are some details that need to be taken into account when using doxycycline to avoid adverse effects and resistance issues.