I am considering using colloidal silver on my chicken. She has yellow bacteria in her throat, getting progressively worse. I had a choanal swab sent to the lab for antibiotic susceptibility, and treated accordingly. She made some improvement, then started getting worse again. She is now having trouble eating. I have done a lot of research on colloidal silver. I am considering treating her with it as a last resort. Here is some research I have found: "This study provided that, its (more than 4 ppm) harmful effect on the liver cells, especially in broilers, and recommended the use of nanosilver as anti micro-bial agent in poultry industry with caution and that the necessary conditions should be observed." https://www.researchgate.net/public...articles_in_Poultry_Production_Review_Article "This research was carried out on 240 one-day-old male broiler chicks (Ross 308) in a completely randomized design (CRD) in four treatments at 0 (control), 4, 8 and 12-ppm levels of silver nanoparticles that was added daily to drinking water with four repetitions within 16 separate cages and 15 birds in each pen. Factors such as temperature, light, water, ventilation, nutrition and vaccination were similar for all treatments. Nanosilver used in this study was nanocid (Nanocid L2000) containing 4000 ppm per liter silver nano-particles with average size of 18 nm." "This study shows its (more than 4 ppm) harmful effect on the liver cells, especially in broilers, and recommended the use of nanosilver as anti microbial agent in poultry industry with caution and that the necessary conditions should be observed." https://academicjournals.org/article/article1380990460_Loghman et al.pdf "Antibacterial and antiseptic effects of silver ion in preventing infection with coli forms, staphylococcus, and streptococcus have been proven in previous studies [26–29]. Silver nanoparticles can destroy many kinds of bacteria, viruses, and fungi, and it is recommended that it can be used in the treatment of certain viral diseases in animals like Influenza and Newcastle . However, extended and excessive exposure to the silver nanoparticles, like many other drugs, has side effects and pathologic effect on living tissues." https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3826293/#B26 "most bird lovers either add a teaspoonful or two of colloidal silver to their bird’s drinking water, for preventive purposes. Or, if the bird is already sick, they might give it 1 cc of colloidal silver, up to three times a day, orally, using an eyedropper or a plastic syringe." https://thesilveredge.com/colloidal...ets-cockatiels-pigeons-ducks-and-other-birds/ "I came home yesterday to a sneezing and wheezing chicken. I quickly removed her and administered 1 cc of colloidal silver 20 ppm. I also soaked a small piece of bread with olive oil and 3 drops of the silver because I was not sure exactly how much of the 1 cc I had gotten down her as she was fighting me. Within a hour she was no longer wheezing. Before bedtime I gave her another 1 cc of the silver with the help of hubby so I was sure I had gotten it down her. She was confined to a large wire dog crate away from the other chickens overnight. In the morning she was fine and this afternoon I returned her to the coop with the other hens." https://www.backyardchickens.com/th...y-infection-in-chickens.827344/#post-12068785 "I rescued 4 black sexlinks and one of them started sneezing with congestion right after releasing them from quarentine. As a newbie chicken mom, I was scared she had infected the whole flock. I believe in not using antibiotics as less as possible...so, I grabbed my silver shield, added 2 teaspoons to a gallon of their water plus 2 teaspoons of avc for 5 days and her sneezes and congestion was totally gone and has not returned!" https://www.backyardchickens.com/threads/colloidal-silver-for-chickens.111548/#post-11827660 "Jade Woodhouse (Organic, Happy Healthy Chooks, Natural Backyard Chook Keeping) is my source for using colloidal silver as a preventive medicine for chicks. She recommends: "on day 7, add one lid of colloidal silver to their drinking water. Continue to do this every week until they are 6 weeks old. Also add kelp and molasses to their drinking water on a weekly basis." She goes on to add other detail about herbs and worm treatment. (You can order her book online - self published and inexpensive). As Jade does not specify the size of drinker she uses, I only used one drop per chick in a 1 litre drinker." http://forum.backyardpoultry.com/viewtopic.php?f=5&t=7625 "I now have a chocolate Wyandotte Bantum who now has a virus. She's been on poly - tonine a complex for about a week. Her symptoms were watery eye.. bubbles coming out. Cough .. sneezing. Then I remembered what I was told. Colloidal silver. So now I've stopped the vitamins, and she will only get colloidal silver. I poured 60 ml's of distilled water (distilled is water that's been boiled and cooled).. for those that didn't know. And I gave her 1 ml or 1 cc of colloidal silver." https://www.backyardchickens.com/threads/is-colloidial-silver-safe-for-chickens.217223/page-3 "10 PPM means in one liter of water there is 10 milligrams of total silver content. True colloidal silvertherefore refers to the percentage of silver in the form of nanoparticles being the majority of the total silver concentration." http://www.silver-colloids.com/Pubs/truecolloidalsilver.html My question is how should I give this to my chicken. In her drinking water or dosed orally. As I understand it, 4 ppm is the strength I should use. Exactly how do I dose that?